{
 "version": "2.2",
 "instance": {
  "aval-20241231x20f.htm": {
   "nsprefix": "aval",
   "nsuri": "http://www.grupoaval.com/20241231",
   "dts": {
    "schema": {
     "local": [
      "aval-20241231.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd",
      "https://www.xbrl.org/2023/calculation-1.1.xsd",
      "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd",
      "https://www.xbrl.org/dtr/type/2022-03-31/types.xsd",
      "https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd",
      "https://xbrl.fasb.org/srt/2024/elts/srt-roles-2024.xsd",
      "https://xbrl.fasb.org/srt/2024/elts/srt-types-2024.xsd",
      "https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd",
      "https://xbrl.fasb.org/us-gaap/2024/elts/us-roles-2024.xsd",
      "https://xbrl.fasb.org/us-gaap/2024/elts/us-types-2024.xsd",
      "https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/dimensions/rol_full_ifrs-dim_2024-03-27.xsd",
      "https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd",
      "https://xbrl.org/2020/extensible-enumerations-2.0.xsd",
      "https://xbrl.sec.gov/country/2024/country-2024.xsd",
      "https://xbrl.sec.gov/currency/2024/currency-2024.xsd",
      "https://xbrl.sec.gov/cyd/2024/cyd-2024.xsd",
      "https://xbrl.sec.gov/cyd/2024/cyd-af-2024.xsd",
      "https://xbrl.sec.gov/cyd/2024/cyd-af-sub-2024.xsd",
      "https://xbrl.sec.gov/dei/2024/dei-2024.xsd",
      "https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd",
      "https://xbrl.sec.gov/ecd/2024/ecd-sub-2024.xsd",
      "https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd"
     ]
    },
    "calculationLink": {
     "local": [
      "aval-20241231_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "aval-20241231_def.xml"
     ],
     "remote": [
      "https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/dimensions/dim_full_ifrs_2024-03-27_role-995000.xml"
     ]
    },
    "labelLink": {
     "local": [
      "aval-20241231_lab.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "aval-20241231_pre.xml"
     ]
    },
    "inline": {
     "local": [
      "aval-20241231x20f.htm"
     ]
    }
   },
   "keyStandard": 577,
   "keyCustom": 606,
   "axisStandard": 60,
   "axisCustom": 7,
   "memberStandard": 160,
   "memberCustom": 397,
   "hidden": {
    "total": 19,
    "http://www.grupoaval.com/20241231": 11,
    "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full": 4,
    "http://xbrl.sec.gov/dei/2024": 4
   },
   "contextCount": 5374,
   "entityCount": 1,
   "segmentCount": 607,
   "elementCount": 2180,
   "unitCount": 11,
   "baseTaxonomies": {
    "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full": 8920,
    "http://xbrl.sec.gov/dei/2024": 59,
    "http://xbrl.sec.gov/cyd/2024": 15,
    "http://xbrl.sec.gov/ecd/2024": 1
   },
   "report": {
    "R1": {
     "role": "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation",
     "longName": "995200090 - Document - Document and Entity Information",
     "shortName": "Document and Entity Information",
     "isDefault": "true",
     "groupType": "document",
     "subGroupType": "",
     "menuCat": "Cover",
     "order": "1",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R2": {
     "role": "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition",
     "longName": "995200100 - Statement - Consolidated Statements of Financial Position",
     "shortName": "Consolidated Statements of Financial Position",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "2",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CorporateLoans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R3": {
     "role": "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome",
     "longName": "995200200 - Statement - Consolidated Statements of Income",
     "shortName": "Consolidated Statements of Income",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "3",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InterestIncomeOnFinancialAssetsAtAmortisedCostLoans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InterestIncomeExpenseNetFromContinuingOperations",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R4": {
     "role": "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome",
     "longName": "995200300 - Statement - Consolidated Statements of Other Comprehensive Income",
     "shortName": "Consolidated Statements of Other Comprehensive Income",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "4",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ProfitLoss",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluationOfTangibleAssetsAndTransferFromOwnerOccupiedPropertyToInvestmentProperty",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R5": {
     "role": "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity",
     "longName": "995200400 - Statement - Consolidated Statements of Changes in Equity",
     "shortName": "Consolidated Statements of Changes in Equity",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "5",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_ComponentsOfEquityAxis_ifrs-full_EquityAttributableToOwnersOfParentMember_pT_SOvcvXUSQzy432t1YJg",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_ComponentsOfEquityAxis_ifrs-full_EquityAttributableToOwnersOfParentMember_pT_SOvcvXUSQzy432t1YJg",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R6": {
     "role": "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows",
     "longName": "995200500 - Statement - Consolidated Statements of Cash Flows",
     "shortName": "Consolidated Statements of Cash Flows",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "6",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ProfitLossBeforeIncomeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ProfitLossBeforeIncomeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R7": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntity",
     "longName": "995210101 - Disclosure - REPORTING ENTITY",
     "shortName": "REPORTING ENTITY",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "7",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R8": {
     "role": "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPolicies",
     "longName": "995210201 - Disclosure - BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES",
     "shortName": "BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "8",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DescriptionOfVoluntaryChangeInAccountingPolicy",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DescriptionOfVoluntaryChangeInAccountingPolicy",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R9": {
     "role": "http://www.grupoaval.com/role/DisclosureJudgmentsAndCriticalAccountingEstimatesInApplyingAccountingPolicies",
     "longName": "995210301 - Disclosure - JUDGMENTS AND CRITICAL ACCOUNTING ESTIMATES IN APPLYING ACCOUNTING POLICIES",
     "shortName": "JUDGMENTS AND CRITICAL ACCOUNTING ESTIMATES IN APPLYING ACCOUNTING POLICIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "9",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R10": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagement",
     "longName": "995210401 - Disclosure - RISK MANAGEMENT",
     "shortName": "RISK MANAGEMENT",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "10",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfRiskManagementTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfRiskManagementTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R11": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValue",
     "longName": "995210501 - Disclosure - ESTIMATION OF FAIR VALUE",
     "shortName": "ESTIMATION OF FAIR VALUE",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "11",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfFairValueMeasurementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfFairValueMeasurementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R12": {
     "role": "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilities",
     "longName": "995210601 - Disclosure - CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES",
     "shortName": "CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "12",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R13": {
     "role": "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalents",
     "longName": "995210701 - Disclosure - CASH AND CASH EQUIVALENTS",
     "shortName": "CASH AND CASH EQUIVALENTS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "13",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R14": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilities",
     "longName": "995210801 - Disclosure - TRADING ASSETS AND LIABILITIES",
     "shortName": "TRADING ASSETS AND LIABILITIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "14",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R15": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecurities",
     "longName": "995210901 - Disclosure - INVESTMENT SECURITIES",
     "shortName": "INVESTMENT SECURITIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "15",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfInvestmentSecuritiesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfInvestmentSecuritiesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R16": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccounting",
     "longName": "995211001 - Disclosure - HEDGE ACCOUNTING",
     "shortName": "HEDGE ACCOUNTING",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "16",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfGeneralHedgeAccountingExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfGeneralHedgeAccountingExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R17": {
     "role": "http://www.grupoaval.com/role/DisclosureLoans",
     "longName": "995211101 - Disclosure - LOANS",
     "shortName": "LOANS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "17",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfLoansAndAdvancesToCustomersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfLoansAndAdvancesToCustomersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R18": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNet",
     "longName": "995211201 - Disclosure - OTHER ACCOUNTS RECEIVABLE, NET",
     "shortName": "OTHER ACCOUNTS RECEIVABLE, NET",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "18",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R19": {
     "role": "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSale",
     "longName": "995211301 - Disclosure - NON-CURRENT ASSETS HELD FOR SALE",
     "shortName": "NON-CURRENT ASSETS HELD FOR SALE",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "19",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R20": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVentures",
     "longName": "995211401 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "20",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R21": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssets",
     "longName": "995211501 - Disclosure - TANGIBLE ASSETS",
     "shortName": "TANGIBLE ASSETS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "21",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R22": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRights",
     "longName": "995211601 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "22",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R23": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwill",
     "longName": "995211701 - Disclosure - GOODWILL",
     "shortName": "GOODWILL",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "23",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfGoodwillExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfGoodwillExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R24": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssets",
     "longName": "995211801 - Disclosure - OTHER INTANGIBLE ASSETS",
     "shortName": "OTHER INTANGIBLE ASSETS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "24",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R25": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTax",
     "longName": "995211901 - Disclosure - INCOME TAX",
     "shortName": "INCOME TAX",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "25",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R26": {
     "role": "http://www.grupoaval.com/role/DisclosureCustomerDeposits",
     "longName": "995212001 - Disclosure - CUSTOMER DEPOSITS",
     "shortName": "CUSTOMER DEPOSITS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "26",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfDepositsFromCustomersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfDepositsFromCustomersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R27": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligations",
     "longName": "995212101 - Disclosure - FINANCIAL OBLIGATIONS",
     "shortName": "FINANCIAL OBLIGATIONS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "27",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R28": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefits",
     "longName": "995212201 - Disclosure - EMPLOYEE BENEFITS",
     "shortName": "EMPLOYEE BENEFITS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "28",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R29": {
     "role": "http://www.grupoaval.com/role/DisclosureProvisions",
     "longName": "995212301 - Disclosure - PROVISIONS",
     "shortName": "PROVISIONS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "29",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R30": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherLiabilities",
     "longName": "995212401 - Disclosure - OTHER LIABILITIES",
     "shortName": "OTHER LIABILITIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "30",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R31": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParent",
     "longName": "995212501 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "31",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R32": {
     "role": "http://www.grupoaval.com/role/DisclosureNonControllingInterest",
     "longName": "995212601 - Disclosure - NON-CONTROLLING INTEREST",
     "shortName": "NON-CONTROLLING INTEREST",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "32",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R33": {
     "role": "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingencies",
     "longName": "995212701 - Disclosure - COMMITMENTS AND CONTINGENCIES",
     "shortName": "COMMITMENTS AND CONTINGENCIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "33",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R34": {
     "role": "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomers",
     "longName": "995212801 - Disclosure - NET INCOME FROM CONTRACTS WITH CUSTOMERS",
     "shortName": "NET INCOME FROM CONTRACTS WITH CUSTOMERS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "34",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R35": {
     "role": "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLoss",
     "longName": "995212901 - Disclosure - NET TRADING INCOME (LOSS)",
     "shortName": "NET TRADING INCOME (LOSS)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "35",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfTradingIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfTradingIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R36": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpense",
     "longName": "995213001 - Disclosure - OTHER INCOME AND EXPENSE",
     "shortName": "OTHER INCOME AND EXPENSE",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "36",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R37": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegments",
     "longName": "995213101 - Disclosure - ANALYSIS OF OPERATING SEGMENTS",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "37",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOperatingSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOperatingSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R38": {
     "role": "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntities",
     "longName": "995213201 - Disclosure - UNCONSOLIDATED STRUCTURED ENTITIES",
     "shortName": "UNCONSOLIDATED STRUCTURED ENTITIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "38",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R39": {
     "role": "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssets",
     "longName": "995213301 - Disclosure - TRANSFERS OF FINANCIAL ASSETS",
     "shortName": "TRANSFERS OF FINANCIAL ASSETS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "39",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfTransfersOfFinancialAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfTransfersOfFinancialAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R40": {
     "role": "http://www.grupoaval.com/role/DisclosureRelatedParties",
     "longName": "995213401 - Disclosure - RELATED PARTIES",
     "shortName": "RELATED PARTIES",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "40",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfRelatedPartyExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfRelatedPartyExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R41": {
     "role": "http://www.grupoaval.com/role/DisclosureSubsequentEvents",
     "longName": "995213501 - Disclosure - SUBSEQUENT EVENTS",
     "shortName": "SUBSEQUENT EVENTS",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "41",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R42": {
     "role": "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc",
     "longName": "995447 - Disclosure - Insider Trading Policies and Procedures",
     "shortName": "Insider Trading Policies and Procedures",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "42",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ecd:InsiderTrdPoliciesProcAdoptedFlag",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ecd:InsiderTrdPoliciesProcAdoptedFlag",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R43": {
     "role": "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure",
     "longName": "995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure",
     "shortName": "Cybersecurity Risk Management and Strategy Disclosure",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "43",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "cyd:CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "cyd:CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R44": {
     "role": "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies",
     "longName": "99920202 - Disclosure - BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES (Policies)",
     "shortName": "BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES (Policies)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "policies",
     "menuCat": "Policies",
     "order": "44",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfBasisOfConsolidationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DescriptionOfVoluntaryChangeInAccountingPolicy",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfBasisOfConsolidationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DescriptionOfVoluntaryChangeInAccountingPolicy",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R45": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
     "longName": "99930103 - Disclosure - REPORTING ENTITY (Tables)",
     "shortName": "REPORTING ENTITY (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "45",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_cYIfhybV3USNIM4zl08wrA",
      "name": "ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_cYIfhybV3USNIM4zl08wrA",
      "name": "ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R46": {
     "role": "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTables",
     "longName": "99930203 - Disclosure - BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES (Tables)",
     "shortName": "BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "46",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationOfUsefulLivesAndDepreciationRatesOfPropertyPlantAndEquipmentTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationOfUsefulLivesAndDepreciationRatesOfPropertyPlantAndEquipmentTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R47": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
     "longName": "99930403 - Disclosure - RISK MANAGEMENT (Tables)",
     "shortName": "RISK MANAGEMENT (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "47",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:DisclosureOfRiskManagementCreditRiskTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:DisclosureOfRiskManagementCreditRiskTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R48": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables",
     "longName": "99930503 - Disclosure - ESTIMATION OF FAIR VALUE (Tables)",
     "shortName": "ESTIMATION OF FAIR VALUE (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "48",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesRecurringBasisTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesRecurringBasisTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R49": {
     "role": "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesTables",
     "longName": "99930603 - Disclosure - CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Tables)",
     "shortName": "CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "49",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R50": {
     "role": "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTables",
     "longName": "99930703 - Disclosure - CASH AND CASH EQUIVALENTS (Tables)",
     "shortName": "CASH AND CASH EQUIVALENTS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "50",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R51": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTables",
     "longName": "99930803 - Disclosure - TRADING ASSETS AND LIABILITIES (Tables)",
     "shortName": "TRADING ASSETS AND LIABILITIES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "51",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfBalancesOfTradingAssetsAndLiabilitiesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfBalancesOfTradingAssetsAndLiabilitiesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R52": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables",
     "longName": "99930903 - Disclosure - INVESTMENT SECURITIES (Tables)",
     "shortName": "INVESTMENT SECURITIES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "52",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfBalancesOfInvestmentSecuritiesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:DisclosureOfInvestmentSecuritiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfBalancesOfInvestmentSecuritiesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:DisclosureOfInvestmentSecuritiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R53": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
     "longName": "99931003 - Disclosure - HEDGE ACCOUNTING (Tables)",
     "shortName": "HEDGE ACCOUNTING (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "53",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutFluctuationInForeignExchangeRatesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfGeneralHedgeAccountingExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutFluctuationInForeignExchangeRatesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfGeneralHedgeAccountingExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R54": {
     "role": "http://www.grupoaval.com/role/DisclosureLoansTables",
     "longName": "99931103 - Disclosure - LOANS (Tables)",
     "shortName": "LOANS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "54",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutDistributionOfCreditPortfolioTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfLoansAndAdvancesToCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutDistributionOfCreditPortfolioTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfLoansAndAdvancesToCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R55": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetTables",
     "longName": "99931203 - Disclosure - OTHER ACCOUNTS RECEIVABLE, NET (Tables)",
     "shortName": "OTHER ACCOUNTS RECEIVABLE, NET (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "55",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutOtherReceivablesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutOtherReceivablesTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R56": {
     "role": "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleTables",
     "longName": "99931303 - Disclosure - NON-CURRENT ASSETS HELD FOR SALE (Tables)",
     "shortName": "NON-CURRENT ASSETS HELD FOR SALE (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "56",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutMovementsOfNoncurrentAssetsHeldForSaleTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutMovementsOfNoncurrentAssetsHeldForSaleTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R57": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables",
     "longName": "99931403 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Tables)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "57",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R58": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsTables",
     "longName": "99931503 - Disclosure - TANGIBLE ASSETS (Tables)",
     "shortName": "TANGIBLE ASSETS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "58",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R59": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsTables",
     "longName": "99931603 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS (Tables)",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "59",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfBalanceOfAssetsInConcessionAgreementsTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfBalanceOfAssetsInConcessionAgreementsTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R60": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwillTables",
     "longName": "99931703 - Disclosure - GOODWILL (Tables)",
     "shortName": "GOODWILL (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "60",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfGoodwillExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfGoodwillExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R61": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsTables",
     "longName": "99931803 - Disclosure - OTHER INTANGIBLE ASSETS (Tables)",
     "shortName": "OTHER INTANGIBLE ASSETS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "61",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutOtherIntangibleAssetsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutOtherIntangibleAssetsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R62": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxTables",
     "longName": "99931903 - Disclosure - INCOME TAX (Tables)",
     "shortName": "INCOME TAX (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "62",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:MajorComponentsOfIncomeTaxExpensesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:MajorComponentsOfIncomeTaxExpensesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R63": {
     "role": "http://www.grupoaval.com/role/DisclosureCustomerDepositsTables",
     "longName": "99932003 - Disclosure - CUSTOMER DEPOSITS (Tables)",
     "shortName": "CUSTOMER DEPOSITS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "63",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutDepositsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDepositsFromCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutDepositsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDepositsFromCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R64": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsTables",
     "longName": "99932103 - Disclosure - FINANCIAL OBLIGATIONS (Tables)",
     "shortName": "FINANCIAL OBLIGATIONS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "64",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ScheduleOfInterbankBorrowingsOvernightFundsAndBorrowingsFromBanksAndOthersTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:ScheduleOfInterbankBorrowingsOvernightFundsAndBorrowingsFromBanksAndOthersTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R65": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTables",
     "longName": "99932203 - Disclosure - EMPLOYEE BENEFITS (Tables)",
     "shortName": "EMPLOYEE BENEFITS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "65",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDefinedBenefitsPlansExplanatoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDefinedBenefitsPlansExplanatoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R66": {
     "role": "http://www.grupoaval.com/role/DisclosureProvisionsTables",
     "longName": "99932303 - Disclosure - PROVISIONS (Tables)",
     "shortName": "PROVISIONS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "66",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOtherProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfProvisionsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfOtherProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfProvisionsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R67": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesTables",
     "longName": "99932403 - Disclosure - OTHER LIABILITIES (Tables)",
     "shortName": "OTHER LIABILITIES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "67",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R68": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTables",
     "longName": "99932503 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT (Tables)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "68",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R69": {
     "role": "http://www.grupoaval.com/role/DisclosureNonControllingInterestTables",
     "longName": "99932603 - Disclosure - NON-CONTROLLING INTEREST (Tables)",
     "shortName": "NON-CONTROLLING INTEREST (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "69",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutFinancialInformationOfNoncontrollingInterestTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutFinancialInformationOfNoncontrollingInterestTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R70": {
     "role": "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersTables",
     "longName": "99932803 - Disclosure - NET INCOME FROM CONTRACTS WITH CUSTOMERS (Tables)",
     "shortName": "NET INCOME FROM CONTRACTS WITH CUSTOMERS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "70",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutCommissionsAndFeesOfContractsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutCommissionsAndFeesOfContractsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R71": {
     "role": "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossTables",
     "longName": "99932903 - Disclosure - NET TRADING INCOME (LOSS) (Tables)",
     "shortName": "NET TRADING INCOME (LOSS) (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "71",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutNetTradingIncomeTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfTradingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutNetTradingIncomeTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfTradingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R72": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseTables",
     "longName": "99933003 - Disclosure - OTHER INCOME AND EXPENSE (Tables)",
     "shortName": "OTHER INCOME AND EXPENSE (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "72",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfOtherIncomeTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfOtherIncomeTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R73": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsTables",
     "longName": "99933103 - Disclosure - ANALYSIS OF OPERATING SEGMENTS (Tables)",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "73",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R74": {
     "role": "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesTables",
     "longName": "99933203 - Disclosure - UNCONSOLIDATED STRUCTURED ENTITIES (Tables)",
     "shortName": "UNCONSOLIDATED STRUCTURED ENTITIES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "74",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R75": {
     "role": "http://www.grupoaval.com/role/DisclosureRelatedPartiesTables",
     "longName": "99933403 - Disclosure - RELATED PARTIES (Tables)",
     "shortName": "RELATED PARTIES (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "75",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutBalancesWithRelatedPartiesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfRelatedPartyExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:DisclosureOfDetailedInformationAboutBalancesWithRelatedPartiesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfRelatedPartyExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R76": {
     "role": "http://www.grupoaval.com/role/DisclosureSubsequentEventsTables",
     "longName": "99933503 - Disclosure - SUBSEQUENT EVENTS (Tables)",
     "shortName": "SUBSEQUENT EVENTS (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "76",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R77": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
     "longName": "99940101 - Disclosure - REPORTING ENTITY - Tabular disclosure (Details)",
     "shortName": "REPORTING ENTITY - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "77",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_X7Mh8uUrIkyQXI6roUBiYw",
      "name": "ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialInformationOfNoncontrollingInterestTextBlock",
       "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_FiduciariaBogotaSaMember_mPtWeYYqI0WPrkpIv_Gfmg",
      "name": "ifrs-full:PrincipalPlaceOfBusinessOfSubsidiary",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesExplanatory",
       "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R78": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
     "longName": "99940102 - Disclosure - REPORTING ENTITY - Textual (Details)",
     "shortName": "REPORTING ENTITY - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "78",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_X7Mh8uUrIkyQXI6roUBiYw",
      "name": "ifrs-full:ProportionOfVotingPowerHeldInSubsidiary",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_GrupoAvalLimitedMember_KY5wx2DeiEOawrwBQsE22A",
      "name": "ifrs-full:ProportionOfOwnershipInterestInSubsidiary",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R79": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
     "longName": "99940103 - Disclosure - REPORTING ENTITY - Discontinued operations (Details)",
     "shortName": "REPORTING ENTITY - Discontinued operations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "79",
     "firstAnchor": {
      "contextRef": "Duration_3_31_2022_To_3_31_2022_dei_LegalEntityAxis_aval_BancoDeBogotaSaMember_ifrs-full_SignificantInvestmentsInAssociatesAxis_aval_BacHoldingInternationalCorpMember_AwGW8GWcI0eSHaeEePMR2w",
      "name": "ifrs-full:ProportionOfOwnershipInterestInAssociate",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_6_2022_dei_LegalEntityAxis_aval_BancoDeBogotaSaMember_ifrs-full_SignificantInvestmentsInAssociatesAxis_aval_BacHoldingInternationalCorpMember_mufmagiCM0SyvEfd1pBfUA",
      "name": "aval:PercentageOfEquityInterestAgreedToSell",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R80": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails",
     "longName": "99940104 - Disclosure - REPORTING ENTITY - Spin off BAC Holding - Textual (Details)",
     "shortName": "REPORTING ENTITY - Spin off BAC Holding - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "80",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_X7Mh8uUrIkyQXI6roUBiYw",
      "name": "ifrs-full:ProportionOfVotingPowerHeldInSubsidiary",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_3_31_2022_To_3_31_2022_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BacHoldingInternationalCorpMember_P_pEck4Xvkun2ymC1l_u1g",
      "name": "ifrs-full:ProportionOfVotingPowerHeldInSubsidiary",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R81": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
     "longName": "99940105 - Disclosure - REPORTING ENTITY - Spin off BAC Holding - Impacts on assets, liabilities and equity recognized (Details)",
     "shortName": "REPORTING ENTITY - Spin off BAC Holding - Impacts on assets, liabilities and equity recognized (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "81",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2022_To_3_31_2022_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_aN7hlytWU0iGccHA5qgnWA",
      "name": "aval:PercentageOfSpinOff",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R82": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
     "longName": "99940106 - Disclosure - REPORTING ENTITY - Spin off BAC Holding - Realization of other comprehensive income (Details)",
     "shortName": "REPORTING ENTITY - Spin off BAC Holding - Realization of other comprehensive income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "82",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedBeforeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2022_To_3_31_2022_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_aN7hlytWU0iGccHA5qgnWA",
      "name": "aval:GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedBeforeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R83": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
     "longName": "99940107 - Disclosure - REPORTING ENTITY - Spin off BAC Holding - Derecognized assets and liabilities (Details)",
     "shortName": "REPORTING ENTITY - Spin off BAC Holding - Derecognized assets and liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "83",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_3_31_2022_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_ZJcozOn5nk2NeJkk7t4tqg",
      "name": "ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R84": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
     "longName": "99940108 - Disclosure - REPORTING ENTITY - Spin off BAC Holding - Discontinued operations income statement (Details)",
     "shortName": "REPORTING ENTITY - Spin off BAC Holding - Discontinued operations income statement (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "84",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InterestIncomeOnFinancialAssetsAtAmortisedCostLoans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R85": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
     "longName": "99940109 - Disclosure - REPORTING ENTITY - Spin off BAC Holding - Discontinued operations cash flow (Details)",
     "shortName": "REPORTING ENTITY - Spin off BAC Holding - Discontinued operations cash flow (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "85",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2022_To_12_31_2022_tATvadldx0mVkLp9UJrvwA",
      "name": "ifrs-full:ProfitLossFromDiscontinuedOperations",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2022_To_3_31_2022_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_aN7hlytWU0iGccHA5qgnWA",
      "name": "ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R86": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
     "longName": "99940110 - Disclosure - REPORTING ENTITY - Sale of BAC Holding - Textual (Details)",
     "shortName": "REPORTING ENTITY - Sale of BAC Holding - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "86",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2022_To_12_31_2022_tATvadldx0mVkLp9UJrvwA",
      "name": "ifrs-full:IssueOfEquity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_14_2022_dei_LegalEntityAxis_aval_BacHoldingInternationalCorpMember_mG9erkmESUO58m--2NCrnA",
      "name": "aval:IfrsSharePrice",
      "unitRef": "Unit_Divide_COP_shares_S-3ONYodoEyi3a8LSW4_sw",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R87": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
     "longName": "99940111 - Disclosure - REPORTING ENTITY - Sale of BAC Holding - Details of transaction (Details)",
     "shortName": "REPORTING ENTITY - Sale of BAC Holding - Details of transaction (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "87",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfOtherIncomeTableTextBlock",
       "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_12_14_2022_To_12_14_2022_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfBySaleMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_yM-MSLlxk0iEzZ-TdiKOUg",
      "name": "aval:DisposalGroupBeforeSaleTransactionShares",
      "unitRef": "Unit_Standard_shares_qZogx5Cd-kqbQdKI3cuF0A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R88": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
     "longName": "99940112 - Disclosure - REPORTING ENTITY - Sale of BAC Holding - Summary of discontinued operations (Details)",
     "shortName": "REPORTING ENTITY - Sale of BAC Holding - Summary of discontinued operations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "88",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InterestIncomeOnFinancialAssetsAtAmortisedCostLoans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_12_14_2022_To_12_14_2022_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfBySaleMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_yM-MSLlxk0iEzZ-TdiKOUg",
      "name": "ifrs-full:OtherIncome",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R89": {
     "role": "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
     "longName": "99940113 - Disclosure - REPORTING ENTITY - Sale of BAC Holding - Cash flow (Details)",
     "shortName": "REPORTING ENTITY - Sale of BAC Holding - Cash flow (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "89",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2022_To_12_31_2022_tATvadldx0mVkLp9UJrvwA",
      "name": "ifrs-full:ProfitLossFromDiscontinuedOperations",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_12_14_2022_To_12_14_2022_aval_IfrsDisposalGroupClassificationAxis_aval_IfrsDiscontinuedOperationsDisposedOfBySaleMember_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_aval_BacHoldingInternationalCorpMember_yM-MSLlxk0iEzZ-TdiKOUg",
      "name": "aval:GainLossOnDiscontinuanceNetOfTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R90": {
     "role": "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails",
     "longName": "99940201 - Disclosure - BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES - Textual (Details)",
     "shortName": "BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "90",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:ClosingForeignExchangeRate",
      "unitRef": "Unit_Divide_COP_USD_scfimB2VQE26oBjx2CoKyQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_RangeAxis_ifrs-full_BottomOfRangeMember_jJeFg47jRkm3yDVTS1Gj6Q",
      "name": "ifrs-full:ProportionOfOwnershipInterestInAssociate",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R91": {
     "role": "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
     "longName": "99940202 - Disclosure - BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES - Property, plant and equipment for own use (Details)",
     "shortName": "BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES - Property, plant and equipment for own use (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "91",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_aval_RubberMember_McDgwwv_M0WckFwDKMfxCQ",
      "name": "ifrs-full:UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_aval_RubberMember_McDgwwv_M0WckFwDKMfxCQ",
      "name": "ifrs-full:UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R92": {
     "role": "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails",
     "longName": "99940203 - Disclosure - BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES - Other intangible assets (Details)",
     "shortName": "BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES - Other intangible assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "92",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis_ifrs-full_RecipesFormulaeModelsDesignsAndPrototypesMember_xdTp4Q0gjkm-2vlmri6adg",
      "name": "ifrs-full:UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfIntangibleAssetsWithIndefiniteUsefulLifeExplanatory",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis_ifrs-full_RecipesFormulaeModelsDesignsAndPrototypesMember_xdTp4Q0gjkm-2vlmri6adg",
      "name": "ifrs-full:UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfIntangibleAssetsWithIndefiniteUsefulLifeExplanatory",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R93": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
     "longName": "99940401 - Disclosure - RISK MANAGEMENT - Consolidated credit risk exposure (Details)",
     "shortName": "RISK MANAGEMENT - Consolidated credit risk exposure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "93",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:MaximumExposureToCreditRiskOfFinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
       "aval:DisclosureOfRiskManagementCreditRiskTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialInstrumentsAxis_ifrs-full_FinancialGuaranteeContractsMember_pgjZYviz40SuuQbOnflGSA",
      "name": "ifrs-full:ExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
       "aval:DisclosureOfRiskManagementCreditRiskTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R94": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
     "longName": "99940402 - Disclosure - RISK MANAGEMENT - Loans recorded at amortized cost (Details)",
     "shortName": "RISK MANAGEMENT - Loans recorded at amortized cost (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "94",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_MicrocreditMember_vgHWoPFlIUu6NtE7gU9Jmg",
      "name": "ifrs-full:ProceedsFromSalesOrMaturityOfFinancialAssetsMeasuredAtAmortisedCostClassifiedAsInvestingActivities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfFinancialAssetsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R95": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLoanPortfolioGivenAsCollateralDetails",
     "longName": "99940403 - Disclosure - RISK MANAGEMENT - Loan portfolio given as collateral (Details)",
     "shortName": "RISK MANAGEMENT - Loan portfolio given as collateral (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "95",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:LoanPortfolioDeliveredAsCollateral",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "aval:LoanPortfolioDeliveredAsCollateral",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:LoanPortfolioDeliveredAsCollateral",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "aval:LoanPortfolioDeliveredAsCollateral",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R96": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
     "longName": "99940404 - Disclosure - RISK MANAGEMENT - Probability of default analysis (Details)",
     "shortName": "RISK MANAGEMENT - Probability of default analysis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "96",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:MaximumExposureToCreditRiskOfFinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
       "aval:DisclosureOfRiskManagementCreditRiskTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_LoanCommitmentsAndFinancialGuaranteeContractsMember_ifrs-full_ProbabilityOfDefaultAxis_aval_RangeOneMember_bNku4ysT-0qch-MUOVK9hQ",
      "name": "ifrs-full:ExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R97": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
     "longName": "99940405 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Trading investments in debt securities (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Trading investments in debt securities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "97",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_FinancingReceivablesByObjectiveAxis_aval_InvestmentGradeMember_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_ifrs-full_TradingSecuritiesMember_20-rGBOEm0C_tRAF2SnDBQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R98": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
     "longName": "99940406 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Investments in debt securities at FVTPL (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Investments in debt securities at FVTPL (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "98",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_FinancingReceivablesByObjectiveAxis_aval_SpeculativeMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_ekOazFf_xkGLTgdN9QRklA",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R99": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
     "longName": "99940407 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Investments in debt securities at FVOCI (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Investments in debt securities at FVOCI (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "99",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_FinancingReceivablesByObjectiveAxis_aval_InvestmentGradeMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_NMqsOO5AkEeK_zy721UG4Q",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R100": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
     "longName": "99940408 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Investments in debt securities at amortized cost (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Investments in debt securities at amortized cost (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "100",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_FinancingReceivablesByObjectiveAxis_aval_InvestmentGradeMember_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesMember_4KUQJnAavkaBl51YVJeFAQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R101": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
     "longName": "99940409 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at FVTPL (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at FVTPL (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "101",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_FinancingReceivablesByObjectiveAxis_aval_InvestmentGradeMember_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_OtherAccountsReceivableAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueMember_m60Co67UFUKdWo6Noql30A",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R102": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
     "longName": "99940410 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - General (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - General (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "102",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R103": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
     "longName": "99940411 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - Evaluated using general approach - Other accounts receivable and contract assets for corporate customers (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - Evaluated using general approach - Other accounts receivable and contract assets for corporate customers (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "103",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesAndContractAssetsForGovernmentAndCorporateCustomersSovereignMember_EO6vS1lc60mk-qSYMC6xMQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R104": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
     "longName": "99940412 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - Evaluated using general approach - By segment (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - Evaluated using general approach - By segment (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "104",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToContributionsMember_FjCg-SP2I0edSYLbgwAhGQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfSegmentationOfAccountsReceivableTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R105": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
     "longName": "99940413 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - Evaluated using simplified approach (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Other accounts receivable at amortized cost - Evaluated using simplified approach (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "105",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_TradeReceivablesAndContractAssetsFromIndividualCustomersMember_ifrs-full_CreditImpairmentOfFinancialInstrumentsAxis_ifrs-full_FinancialInstrumentsCreditimpairedMember_pMov6ehQrEexGoFfroLjUA",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfExposureToCreditRiskAndEclsForOtherAccountsReceivablesAndContractAssetsForCorporateCustomersTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R106": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
     "longName": "99940414 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Assets (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "106",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_FinancingReceivablesByObjectiveAxis_aval_InvestmentGradeMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DerivativesMember_6VyOHeoIlkCU_SCICn6FoA",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R107": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
     "longName": "99940415 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Trading derivatives - Assets (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Trading derivatives - Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "107",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DerivativesMember_ifrs-full_ClassesOfFinancialAssetsAxis_ifrs-full_TradingSecuritiesMember_sYtYYIqQ10eZG5WVL9bK5g",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfAssetsAndLiabilitiesExposedToTradingRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R108": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
     "longName": "99940416 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Trading derivatives - Liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Trading derivatives - Liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "108",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_aval_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember_ifrs-full_ClassesOfFinancialLiabilitiesAxis_aval_TradingDerivativesMember_ifrs-full_ClassesOfLiabilitiesAxis_ifrs-full_DerivativesMember_yARwSnxSDUebN3oUezWn-g",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfAssetsAndLiabilitiesExposedToTradingRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R109": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
     "longName": "99940417 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Hedging derivatives - Assets (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Hedging derivatives - Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "109",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DerivativesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_HedgingInstrumentsMember_lq3NmkHe9USmIHXEcLQFGg",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfAssetsAndLiabilitiesExposedToTradingRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R110": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
     "longName": "99940418 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Hedging derivatives - Liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Hedging derivatives - Liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "110",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_aval_FinancialLiabilitiesAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember_ifrs-full_ClassesOfFinancialLiabilitiesAxis_aval_HedgingInstrumentsMember_ifrs-full_ClassesOfLiabilitiesAxis_ifrs-full_DerivativesMember_sFSe8rr-G0av4Aw8PVNl4A",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfAssetsAndLiabilitiesExposedToTradingRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R111": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAdditionalInformationDetails",
     "longName": "99940419 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Additional information (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Derivative instruments - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "111",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:CashCollateralOnDerivatives",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:CashCollateralOnDerivatives",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R112": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
     "longName": "99940420 - Disclosure - RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Cash and cash equivalents (Details)",
     "shortName": "RISK MANAGEMENT - Credit quality of financial assets (excluding loan portfolio) - Cash and cash equivalents (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "112",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CashEquivalents",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CashEquivalents",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R113": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
     "longName": "99940421 - Disclosure - RISK MANAGEMENT - Mitigation of credit risk, collateral and other (Details)",
     "shortName": "RISK MANAGEMENT - Mitigation of credit risk, collateral and other (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "113",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:MaximumExposureToCreditRiskOfFinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
       "aval:DisclosureOfRiskManagementCreditRiskTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_IfrsLoanToValueAxis_aval_LtvLessThan50PercentMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_ifrs-full_MortgagesMember_3LTsu04xlUy7Nh4CL6cCaw",
      "name": "ifrs-full:MaximumExposureToCreditRiskOfFinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfLoansAndAdvancesByRangeOfLoanToValueRatioTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R114": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
     "longName": "99940422 - Disclosure - RISK MANAGEMENT - Credit portfolio per type of guarantees received (Details)",
     "shortName": "RISK MANAGEMENT - Credit portfolio per type of guarantees received (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "114",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfAssetsAxis_aval_UnsecuredCreditsMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_9opojCHBcUCWHrdPy0nP_w",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditPortfolioTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R115": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
     "longName": "99940423 - Disclosure - RISK MANAGEMENT - Identifiable collateral (Details)",
     "shortName": "RISK MANAGEMENT - Identifiable collateral (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "115",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_CommercialLendingPortfolioMember_bD-NjUrwMEeGum15TVEsAg",
      "name": "aval:FinancialAssetsIdentifiableCollateralCarryingAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditPortfolioTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_CommercialLendingPortfolioMember_bD-NjUrwMEeGum15TVEsAg",
      "name": "aval:FinancialAssetsIdentifiableCollateralCarryingAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditPortfolioTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R116": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
     "longName": "99940424 - Disclosure - RISK MANAGEMENT - Credit risk model scenario tables (Details)",
     "shortName": "RISK MANAGEMENT - Credit risk model scenario tables (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "116",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_GeographicalAreasAxis_country_CO_q3CKWwssb0-UKEZ1bVubyA",
      "name": "aval:InflationRatePercentage",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfMacroeconomicVariablesUsedExpectedCreditLossCalculationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_GeographicalAreasAxis_country_CO_q3CKWwssb0-UKEZ1bVubyA",
      "name": "aval:InflationRatePercentage",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfMacroeconomicVariablesUsedExpectedCreditLossCalculationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R117": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails",
     "longName": "99940425 - Disclosure - RISK MANAGEMENT - Scenario of probability weighting in measuring ECL (Details)",
     "shortName": "RISK MANAGEMENT - Scenario of probability weighting in measuring ECL (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "117",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_GeographicalAreasAxis_country_CO_srt_StatementScenarioAxis_aval_ScenarioMember_9Lga1aGZ3EWEnZwDADGJOA",
      "name": "aval:PercentageOfScenarioProbabilityWeightingInMeasuringExpectedCreditLosses",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfScenarioOfProbabilityOfWeightingInMeasuringExpectedCreditLossesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_GeographicalAreasAxis_country_CO_srt_StatementScenarioAxis_aval_ScenarioMember_9Lga1aGZ3EWEnZwDADGJOA",
      "name": "aval:PercentageOfScenarioProbabilityWeightingInMeasuringExpectedCreditLosses",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfScenarioOfProbabilityOfWeightingInMeasuringExpectedCreditLossesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R118": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
     "longName": "99940426 - Disclosure - RISK MANAGEMENT - Credit risk model scenarios - Gross exposure (Details)",
     "shortName": "RISK MANAGEMENT - Credit risk model scenarios - Gross exposure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "118",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_srt_StatementScenarioAxis_aval_ScenarioMember_RFGkQSHPt0GwoN6T_vJroQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R119": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
     "longName": "99940427 - Disclosure - RISK MANAGEMENT - Credit risk model scenarios - Loss allowance (Details)",
     "shortName": "RISK MANAGEMENT - Credit risk model scenarios - Loss allowance (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "119",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_AccumulatedImpairmentMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_srt_StatementScenarioAxis_aval_ScenarioMember_hqIukia5r0Oj5s12cWicJQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R120": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
     "longName": "99940428 - Disclosure - RISK MANAGEMENT - Credit risk model scenarios - Proportion of assets in Stage 2 (Details)",
     "shortName": "RISK MANAGEMENT - Credit risk model scenarios - Proportion of assets in Stage 2 (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "120",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_CommercialLendingPortfolioMember_srt_StatementScenarioAxis_aval_ScenarioMember_gixdoc0o5EqaX8q4fW9sxQ",
      "name": "aval:ProportionOfLossAllowanceToGrossExposure",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_CommercialLendingPortfolioMember_srt_StatementScenarioAxis_aval_ScenarioMember_gixdoc0o5EqaX8q4fW9sxQ",
      "name": "aval:ProportionOfLossAllowanceToGrossExposure",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R121": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails",
     "longName": "99940429 - Disclosure - RISK MANAGEMENT - Credit risk model - Debt securities (Details)",
     "shortName": "RISK MANAGEMENT - Credit risk model - Debt securities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "121",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfAssetsAxis_aval_IfrsSovereignDebtSecuritiesMember_ZsXhFZ8lYk2GHQtfcqyAvg",
      "name": "aval:LossGivenDefaultRecoveryRatesWeightage",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfAssetsAxis_aval_IfrsSovereignDebtSecuritiesMember_ZsXhFZ8lYk2GHQtfcqyAvg",
      "name": "aval:LossGivenDefaultRecoveryRatesWeightage",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R122": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
     "longName": "99940430 - Disclosure - RISK MANAGEMENT - Credit risk model - Loss allowance (Details)",
     "shortName": "RISK MANAGEMENT - Credit risk model - Loss allowance (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "122",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R123": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
     "longName": "99940431 - Disclosure - RISK MANAGEMENT - Credit risk model - Impairment losses (Details)",
     "shortName": "RISK MANAGEMENT - Credit risk model - Impairment losses (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "123",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ImpairmentLoss",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossLoansAndAdvances",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "aval:DisclosureOfImpairmentLossOfPortfolioTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R124": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
     "longName": "99940432 - Disclosure - RISK MANAGEMENT - Loans individually evaluated for impairment (Details)",
     "shortName": "RISK MANAGEMENT - Loans individually evaluated for impairment (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "124",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CreditImpairmentOfFinancialInstrumentsAxis_ifrs-full_FinancialInstrumentsCreditimpairedMember_ifrs-full_MethodOfAssessmentOfExpectedCreditLossesAxis_ifrs-full_ExpectedCreditLossesIndividuallyAssessedMember_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis_ifrs-full_LifetimeExpectedCreditLossesMember_ReQeskN-VkeeN8B159UlaA",
      "name": "aval:FinancialAssetsLoansCollateralGuarantees",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutPortfolioOfLoansAssessedIndividuallyForImpairmentTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R125": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
     "longName": "99940433 - Disclosure - RISK MANAGEMENT - Loss allowance roll forward (Details)",
     "shortName": "RISK MANAGEMENT - Loss allowance roll forward (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "125",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_AccumulatedImpairmentMember_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_LoanCommitmentsAndFinancialGuaranteeContractsMember_XY-9ifUXwkW3xwQrMGMNmw",
      "name": "aval:IncreaseDecreaseRemeasurementOfLossAllowanceNet",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfReconciliationOfLossAllowanceTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R126": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
     "longName": "99940434 - Disclosure - RISK MANAGEMENT - Impact of the measurement of ECL (Details)",
     "shortName": "RISK MANAGEMENT - Impact of the measurement of ECL (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "126",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_1UsdeYK6-0qR2G2dWD2dvA",
      "name": "aval:ImpactOfMeasurementOfExpectedCreditLossesDueToChangesMade",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_1UsdeYK6-0qR2G2dWD2dvA",
      "name": "aval:ImpactOfMeasurementOfExpectedCreditLossesDueToChangesMade",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R127": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
     "longName": "99940435 - Disclosure - RISK MANAGEMENT - Changes in gross carrying amount (Details)",
     "shortName": "RISK MANAGEMENT - Changes in gross carrying amount (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "127",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_F5AByb4g7UmK7F4vL3y5yg",
      "name": "ifrs-full:IncreaseThroughOriginationOrPurchaseFinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfChangesInGrossCarryingAmountTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R128": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
     "longName": "99940436 - Disclosure - RISK MANAGEMENT - Concentrations of credit risk - Concentration by sector (Details)",
     "shortName": "RISK MANAGEMENT - Concentrations of credit risk - Concentration by sector (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "128",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_Xfzerzfylk6D_0iL_RU0pA",
      "name": "aval:ConcentrationRiskPercentageFinancialAssets",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditPortfolioByEconomicSectorTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R129": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
     "longName": "99940437 - Disclosure - RISK MANAGEMENT - Concentrations of credit risk - Concentration by country (Details)",
     "shortName": "RISK MANAGEMENT - Concentrations of credit risk - Concentration by country (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "129",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_ifrs-full_GeographicalAreasAxis_country_CO_v3hg7y4WkEqymHY0ZxWkxQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditPortfolioByGeographicalAreaTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R130": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
     "longName": "99940438 - Disclosure - RISK MANAGEMENT - Concentrations of credit risk - Concentration by currency - Tabular disclosure (Details)",
     "shortName": "RISK MANAGEMENT - Concentrations of credit risk - Concentration by currency - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "130",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_srt_CurrencyAxis_currency_COP_-3xjiqLTN06sGHjG4yTVDQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutClassificationOfLoanPortfolioByTypeOfCurrencyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R131": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
     "longName": "99940439 - Disclosure - RISK MANAGEMENT - Concentrations of credit risk - Concentration by currency - Additional information (Details)",
     "shortName": "RISK MANAGEMENT - Concentrations of credit risk - Concentration by currency - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "131",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfLoanPortfolioInForeignCurrency",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfLoanPortfolioInForeignCurrency",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R132": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
     "longName": "99940440 - Disclosure - RISK MANAGEMENT - Investment debt securities - Concentration by sector (Details)",
     "shortName": "RISK MANAGEMENT - Investment debt securities - Concentration by sector (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "132",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesMember_srt_CurrencyAxis_currency_COP_VHMsGpkkJ0uv0QlXXh1k2A",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesBySectorTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R133": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
     "longName": "99940441 - Disclosure - RISK MANAGEMENT - Investment debt securities - Concentration by location (Details)",
     "shortName": "RISK MANAGEMENT - Investment debt securities - Concentration by location (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "133",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_GeographicalAreasAxis_aval_AllCountriesMember_6Mrgq2oykUC-RyKcnymhEg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesByLocationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R134": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails",
     "longName": "99940442 - Disclosure - RISK MANAGEMENT - Investment debt securities - Concentration by sovereign risk - Tabular disclosure (Details)",
     "shortName": "RISK MANAGEMENT - Investment debt securities - Concentration by sovereign risk - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "134",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:GovernmentDebtInstrumentsHeld",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesBySovereignRiskTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:GovernmentDebtInstrumentsHeld",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesBySovereignRiskTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R135": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskAdditionalInformationDetails",
     "longName": "99940443 - Disclosure - RISK MANAGEMENT - Investment debt securities - Concentration by sovereign risk - Additional information (Details)",
     "shortName": "RISK MANAGEMENT - Investment debt securities - Concentration by sovereign risk - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "135",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InvestmentInDebtInstrumentAsPercentageOfTotalPortfolio",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InvestmentInDebtInstrumentAsPercentageOfTotalPortfolio",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R136": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails",
     "longName": "99940444 - Disclosure - RISK MANAGEMENT - Modified financial assets - Restructured loans (Details)",
     "shortName": "RISK MANAGEMENT - Modified financial assets - Restructured loans (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "136",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:LoansAndReceivablesRestructured",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditPortfolioByRestructuringTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:LoansAndReceivablesRestructured",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnCreditPortfolioByRestructuringTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R137": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsForeclosedAssetsDetails",
     "longName": "99940445 - Disclosure - RISK MANAGEMENT - Modified financial assets - Foreclosed assets (Details)",
     "shortName": "RISK MANAGEMENT - Modified financial assets - Foreclosed assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "137",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:ForeclosedFinancialAssetsReceived",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnForeclosedAssetsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:ForeclosedFinancialAssetsReceived",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationOnForeclosedAssetsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R138": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
     "longName": "99940446 - Disclosure - RISK MANAGEMENT - modified financial assets - Credit commitments (Details)",
     "shortName": "RISK MANAGEMENT - modified financial assets - Credit commitments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "138",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_LoanCommitmentsAndFinancialGuaranteeContractsMember_Zm-L6eJu90eDmYUaADTyFg",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutCommitmentsInUnusedLinesOfCreditTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_LoanCommitmentsAndFinancialGuaranteeContractsMember_Zm-L6eJu90eDmYUaADTyFg",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutCommitmentsInUnusedLinesOfCreditTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R139": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails",
     "longName": "99940447 - Disclosure - RISK MANAGEMENT - Offset of financial assets (Details)",
     "shortName": "RISK MANAGEMENT - Offset of financial assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "139",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOffsettingOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOffsettingOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R140": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails",
     "longName": "99940448 - Disclosure - RISK MANAGEMENT - Offset of financial liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Offset of financial liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "140",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOffsettingOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOffsettingOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R141": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
     "longName": "99940449 - Disclosure - RISK MANAGEMENT - Trading book risk - Assets (Details)",
     "shortName": "RISK MANAGEMENT - Trading book risk - Assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "141",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_TypesOfRisksAxis_ifrs-full_MarketRiskMember_t5wnlotaC0ORCU4A2Fvpng",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBreakDownOfFinancialAssetsAndLiabilitiesExposedToTradingRiskTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R142": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
     "longName": "99940450 - Disclosure - RISK MANAGEMENT - Trading book risk - Liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Trading book risk - Liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "142",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_aval_FinancialLiabilitiesAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember_ifrs-full_ClassesOfFinancialLiabilitiesAxis_aval_HedgingInstrumentsMember_ifrs-full_ClassesOfLiabilitiesAxis_ifrs-full_DerivativesMember_ifrs-full_TypesOfRisksAxis_ifrs-full_MarketRiskMember_123D0BXRR0-bfEplGoTVbg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBreakDownOfFinancialAssetsAndLiabilitiesExposedToTradingRiskTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R143": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails",
     "longName": "99940451 - Disclosure - RISK MANAGEMENT - Trading book risk - Net position (Details)",
     "shortName": "RISK MANAGEMENT - Trading book risk - Net position (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "143",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_MarketRiskMember_BnCQC84gkke12itDBy34sg",
      "name": "aval:FinanceAssetsLiabilitiesNet",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBreakDownOfFinancialAssetsAndLiabilitiesExposedToTradingRiskTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R144": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
     "longName": "99940452 - Disclosure - RISK MANAGEMENT - Risk management - Regulatory (Details)",
     "shortName": "RISK MANAGEMENT - Risk management - Regulatory (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "144",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_TradingRiskAxis_aval_MeasureTradingRiskMethodMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_u7wi6bgIQEiPToNl4DBmVw",
      "name": "ifrs-full:ValueAtRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_aval_TradingRiskAxis_aval_MeasureTradingRiskMethodMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_u7wi6bgIQEiPToNl4DBmVw",
      "name": "ifrs-full:ValueAtRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R145": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
     "longName": "99940453 - Disclosure - RISK MANAGEMENT - Risk management - Value at risk - Tabular disclosure (Details)",
     "shortName": "RISK MANAGEMENT - Risk management - Value at risk - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "145",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_x0fLbeMyiEyfnpKeO--KFQ",
      "name": "ifrs-full:ValueAtRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskByTypeTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_x0fLbeMyiEyfnpKeO--KFQ",
      "name": "ifrs-full:ValueAtRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskByTypeTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R146": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
     "longName": "99940454 - Disclosure - RISK MANAGEMENT - Risk management - Value at risk - Additional information (Details)",
     "shortName": "RISK MANAGEMENT - Risk management - Value at risk - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "146",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_ifrs-full_TypesOfRisksAxis_ifrs-full_MarketRiskMember_yp0weoZCAkST8LfqyNoaBQ",
      "name": "aval:MarketRiskWeightedAssetsAsPercentageOfTotalRiskWeightedAssets",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_ifrs-full_TypesOfRisksAxis_ifrs-full_MarketRiskMember_yp0weoZCAkST8LfqyNoaBQ",
      "name": "aval:MarketRiskWeightedAssetsAsPercentageOfTotalRiskWeightedAssets",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R147": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
     "longName": "99940455 - Disclosure - RISK MANAGEMENT - Investment price risk in equity instruments (Details)",
     "shortName": "RISK MANAGEMENT - Investment price risk in equity instruments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "147",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_EquityInvestmentsMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_KtCfHEQQ7UCroN3tYoRkyw",
      "name": "aval:InvestmentSubjectToValueAtRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DescriptionOfDetailedInformationAboutInvestmentsSubjectToValueAtRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_EquityInvestmentsMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_KtCfHEQQ7UCroN3tYoRkyw",
      "name": "aval:InvestmentSubjectToValueAtRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DescriptionOfDetailedInformationAboutInvestmentsSubjectToValueAtRiskTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R148": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskGeneralInformationDetails",
     "longName": "99940456 - Disclosure - RISK MANAGEMENT - Structural foreign exchange risk - General information (Details)",
     "shortName": "RISK MANAGEMENT - Structural foreign exchange risk - General information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "148",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfAverageDifferenceInForeignCurrencyDenominatedRightsAndForeignCurrencyDenominatedObligationsOnUnconsolidatedBasis",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfAverageDifferenceInForeignCurrencyDenominatedRightsAndForeignCurrencyDenominatedObligationsOnUnconsolidatedBasis",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R149": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
     "longName": "99940457 - Disclosure - RISK MANAGEMENT - Structural foreign exchange risk - Financial assets (Details)",
     "shortName": "RISK MANAGEMENT - Structural foreign exchange risk - Financial assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "149",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_ifrs-full_TypesOfRisksAxis_ifrs-full_CurrencyRiskMember_Ufi0PuKr0kKO6AnkiF6zWQ",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutForeignCurrencyAssetsAndLiabilitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R150": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
     "longName": "99940458 - Disclosure - RISK MANAGEMENT - Structural foreign exchange risk - Financial liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Structural foreign exchange risk - Financial liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "150",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialLiabilitiesAxis_aval_CustomerDepositsMember_ifrs-full_TypesOfRisksAxis_ifrs-full_CurrencyRiskMember_6ZBV6naE3UOq6NjxDbyUnA",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutForeignCurrencyAssetsAndLiabilitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R151": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
     "longName": "99940459 - Disclosure - RISK MANAGEMENT - Structural foreign exchange risk - Net financial asset (liability) position (Details)",
     "shortName": "RISK MANAGEMENT - Structural foreign exchange risk - Net financial asset (liability) position (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "151",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_CurrencyRiskMember_QzI1e6hufU-pkSxJcek8BA",
      "name": "aval:FinanceAssetsLiabilitiesNet",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutForeignCurrencyAssetsAndLiabilitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R152": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskSensitivityAnalysisOfForeignExchangeEffectDetails",
     "longName": "99940460 - Disclosure - RISK MANAGEMENT - Structural foreign exchange risk - Sensitivity analysis of foreign exchange effect (Details)",
     "shortName": "RISK MANAGEMENT - Structural foreign exchange risk - Sensitivity analysis of foreign exchange effect (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "152",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:IncreaseInEquityDueToChangeInValueOfUsd",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfSensitivityAnalysisOfForeignExchangeEffectTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:IncreaseInEquityDueToChangeInValueOfUsd",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfSensitivityAnalysisOfForeignExchangeEffectTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R153": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
     "longName": "99940461 - Disclosure - RISK MANAGEMENT - Structural foreign exchange risk - Results of Delta EVE and Delta NIM measurements (Details)",
     "shortName": "RISK MANAGEMENT - Structural foreign exchange risk - Results of Delta EVE and Delta NIM measurements (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "153",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_8R1cmtfPlEC94d7S6FuRBA",
      "name": "aval:PercentageOfOrdinaryBasicEquityAndAdditionalBasicEquityOnWhichShockScenariosAreCalculated",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_8R1cmtfPlEC94d7S6FuRBA",
      "name": "aval:PercentageOfOrdinaryBasicEquityAndAdditionalBasicEquityOnWhichShockScenariosAreCalculated",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R154": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
     "longName": "99940462 - Disclosure - RISK MANAGEMENT - Structural interest rate risk - Results of NIM and EVE Shocks (Details)",
     "shortName": "RISK MANAGEMENT - Structural interest rate risk - Results of NIM and EVE Shocks (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "154",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_aval_RegulatoryShockScenarioAxis_aval_ParallelUpwardShockMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_0sXqXFMeA0uP4L5CgECP4Q",
      "name": "aval:IncreaseDecreaseInNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryShockScenarios",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfImpactOnNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryScenariosExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_aval_RegulatoryShockScenarioAxis_aval_ParallelUpwardShockMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_0sXqXFMeA0uP4L5CgECP4Q",
      "name": "aval:IncreaseDecreaseInNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryShockScenarios",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfImpactOnNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryScenariosExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R155": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
     "longName": "99940463 - Disclosure - RISK MANAGEMENT - Structural interest rate risk - Financial assets (Details)",
     "shortName": "RISK MANAGEMENT - Structural interest rate risk - Financial assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "155",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_PastDueStatusAxis_ifrs-full_NotLaterThanOneMonthMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_oaVAIARjqEuMfrDMo4CKAg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "th",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R156": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
     "longName": "99940464 - Disclosure - RISK MANAGEMENT - Structural interest rate risk - Financial liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Structural interest rate risk - Financial liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "156",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_PastDueStatusAxis_ifrs-full_NotLaterThanOneMonthMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_oaVAIARjqEuMfrDMo4CKAg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "th",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R157": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskAccountingSensitivityExerciseDetails",
     "longName": "99940465 - Disclosure - RISK MANAGEMENT - Structural interest rate risk - Accounting sensitivity exercise (Details)",
     "shortName": "RISK MANAGEMENT - Structural interest rate risk - Accounting sensitivity exercise (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "157",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:AccountingSensitivityExerciseToVariationsInInterestRatesBasisPointIncrease",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:AccountingSensitivityExerciseToVariationsInInterestRatesBasisPointIncrease",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R158": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
     "longName": "99940466 - Disclosure - RISK MANAGEMENT - Structural interest rate risk - Interest bearing assets (Details)",
     "shortName": "RISK MANAGEMENT - Structural interest rate risk - Interest bearing assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "158",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_PastDueStatusAxis_ifrs-full_NotLaterThanOneYearMember_ifrs-full_TypesOfInterestRatesAxis_ifrs-full_FloatingInterestRateMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_Qz298Uq_TEm0yKn5vlZrAg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBreakdownOfInterestBearingAssetsAndLiabilitiesByInterestRateTypeAndMaturityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R159": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
     "longName": "99940467 - Disclosure - RISK MANAGEMENT - Structural interest rate risk - Interest bearing liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Structural interest rate risk - Interest bearing liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "159",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_PastDueStatusAxis_ifrs-full_NotLaterThanOneYearMember_ifrs-full_TypesOfInterestRatesAxis_ifrs-full_FloatingInterestRateMember_ifrs-full_TypesOfRisksAxis_ifrs-full_InterestRateRiskMember_Qz298Uq_TEm0yKn5vlZrAg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBreakdownOfInterestBearingAssetsAndLiabilitiesByInterestRateTypeAndMaturityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R160": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskReserveRequirementDetails",
     "longName": "99940468 - Disclosure - RISK MANAGEMENT - Liquidity risk - Reserve requirement (Details)",
     "shortName": "RISK MANAGEMENT - Liquidity risk - Reserve requirement (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "160",
     "firstAnchor": {
      "contextRef": "As_Of_8_30_2024_0x9xt1ozJ0GnK19f6INxgA",
      "name": "aval:ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageCheckingAndSavingsAccountsBeforeReduction",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_8_30_2024_0x9xt1ozJ0GnK19f6INxgA",
      "name": "aval:ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageCheckingAndSavingsAccountsBeforeReduction",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R161": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
     "longName": "99940469 - Disclosure - RISK MANAGEMENT - Liquidity risk - Liquid assets and LRI (Details)",
     "shortName": "RISK MANAGEMENT - Liquidity risk - Liquid assets and LRI (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "161",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_UL-GMjrKrkuqnioXiPrbZg",
      "name": "ifrs-full:FinancialAssetsHeldForManagingLiquidityRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutBreakdownByTimeBandsOfLiquidAssetsAndLiquidityRiskIndicatorTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_UL-GMjrKrkuqnioXiPrbZg",
      "name": "ifrs-full:FinancialAssetsHeldForManagingLiquidityRisk",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutBreakdownByTimeBandsOfLiquidAssetsAndLiquidityRiskIndicatorTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R162": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
     "longName": "99940470 - Disclosure - RISK MANAGEMENT - Liquidity risk - Amount of IRL ratio (Details)",
     "shortName": "RISK MANAGEMENT - Liquidity risk - Amount of IRL ratio (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "162",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_MaturityAxis_aval_LaterThanOneDayAndNotLaterThanSevenDaysMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_Ap5TIFHra0quGvZHHO_enw",
      "name": "aval:LiquidityRequirement",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-9",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfLiquidityRequirementTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_MaturityAxis_aval_LaterThanOneDayAndNotLaterThanSevenDaysMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_Ap5TIFHra0quGvZHHO_enw",
      "name": "aval:LiquidityRequirement",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-9",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfLiquidityRequirementTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R163": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
     "longName": "99940471 - Disclosure - RISK MANAGEMENT - Liquidity risk - Percentage of IRL ratio (Details)",
     "shortName": "RISK MANAGEMENT - Liquidity risk - Percentage of IRL ratio (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "163",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_MaturityAxis_aval_LaterThanOneDayAndNotLaterThanSevenDaysMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_Ap5TIFHra0quGvZHHO_enw",
      "name": "aval:PercentageOfLiquidityRequirement",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfPercentageOfLiquidityRequirementTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_MaturityAxis_aval_LaterThanOneDayAndNotLaterThanSevenDaysMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_Ap5TIFHra0quGvZHHO_enw",
      "name": "aval:PercentageOfLiquidityRequirement",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfPercentageOfLiquidityRequirementTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R164": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
     "longName": "99940472 - Disclosure - RISK MANAGEMENT - Liquidity risk - Undiscounted cash flows of financial assets (Details)",
     "shortName": "RISK MANAGEMENT - Liquidity risk - Undiscounted cash flows of financial assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "164",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_LiquidityRiskMember_9RTY9FiYN0y351PRUVQh_w",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutBreakdownByContractualUndiscountedCashFlowsOfFinancialAssetsAndLiabilitiesIncludingProjectedContractualInterestReceivableAndPayableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R165": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
     "longName": "99940473 - Disclosure - RISK MANAGEMENT - Liquidity risk - Undiscounted cash flows of financial liabilities (Details)",
     "shortName": "RISK MANAGEMENT - Liquidity risk - Undiscounted cash flows of financial liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "165",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_LiquidityRiskMember_9RTY9FiYN0y351PRUVQh_w",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutBreakdownByContractualUndiscountedCashFlowsOfFinancialAssetsAndLiabilitiesIncludingProjectedContractualInterestReceivableAndPayableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R166": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
     "longName": "99940474 - Disclosure - RISK MANAGEMENT - Liquidity risk - Undiscounted cash flows of commitment loans (Details)",
     "shortName": "RISK MANAGEMENT - Liquidity risk - Undiscounted cash flows of commitment loans (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "166",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_LiquidityRiskMember_9RTY9FiYN0y351PRUVQh_w",
      "name": "ifrs-full:GrossLoanCommitments",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutBreakdownByContractualUndiscountedCashFlowsOfFinancialAssetsAndLiabilitiesIncludingProjectedContractualInterestReceivableAndPayableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfRisksAxis_ifrs-full_LiquidityRiskMember_9RTY9FiYN0y351PRUVQh_w",
      "name": "ifrs-full:GrossLoanCommitments",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutBreakdownByContractualUndiscountedCashFlowsOfFinancialAssetsAndLiabilitiesIncludingProjectedContractualInterestReceivableAndPayableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R167": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails",
     "longName": "99940475 - Disclosure - RISK MANAGEMENT - Regulatory capital management (Details)",
     "shortName": "RISK MANAGEMENT - Regulatory capital management (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "167",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfCapitalConversionBuffer",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfCapitalConversionBuffer",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R168": {
     "role": "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
     "longName": "99940476 - Disclosure - RISK MANAGEMENT - Minimum regulatory capital requirements (Details)",
     "shortName": "RISK MANAGEMENT - Minimum regulatory capital requirements (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "168",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:IssuedCapital",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_srt_StatementScenarioAxis_aval_SeparateBasisMember_GjCAcLJgZESG4YbWwLEa2A",
      "name": "ifrs-full:IssuedCapital",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutCalculationOfMinimumRegulatoryCapitalTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R169": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
     "longName": "99940501 - Disclosure - ESTIMATION OF FAIR VALUE - Measurements of fair value of assets on a recurring basis (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Measurements of fair value of assets on a recurring basis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "169",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_OtherAccountsReceivableAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueMember_ifrs-full_MeasurementAxis_ifrs-full_RecurringFairValueMeasurementMember_cGS9rgBG3EGKP3exqjuYUw",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R170": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
     "longName": "99940502 - Disclosure - ESTIMATION OF FAIR VALUE - Measurements of fair value of liabilities on a recurring basis (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Measurements of fair value of liabilities on a recurring basis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "170",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Liabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_MeasurementAxis_ifrs-full_RecurringFairValueMeasurementMember_Du6G3UNNs0-VUDDdubAlgA",
      "name": "ifrs-full:Liabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R171": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
     "longName": "99940503 - Disclosure - ESTIMATION OF FAIR VALUE - Trading assets in debt securities pledged as collateral (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Trading assets in debt securities pledged as collateral (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "171",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_acCThXmbM0aC7UK0xPfePA",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfTradingAssetsInDebtSecuritiesPledgedAsCollateralTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_PledgedInMoneyMarketOperationsMember_CGjT6wLsd0aAtHhg1hbYZQ",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfTradingAssetsInDebtSecuritiesPledgedAsCollateralTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R172": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
     "longName": "99940504 - Disclosure - ESTIMATION OF FAIR VALUE - Investment in debt securities pledged as collateral (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Investment in debt securities pledged as collateral (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "172",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_DnPaRfbTuUyZmGM6t9ZOuA",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:InvestmentInDebtAtFvociSecuritiesPledgedAsCollateralTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_PledgedInMoneyMarketOperationsMember_5BjGjBgmREW35RAv641eyw",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:InvestmentInDebtAtFvociSecuritiesPledgedAsCollateralTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R173": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
     "longName": "99940505 - Disclosure - ESTIMATION OF FAIR VALUE - Measurements at fair value on a non-recurring basis (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Measurements at fair value on a non-recurring basis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "173",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_MeasurementAxis_ifrs-full_NonrecurringFairValueMeasurementMember_v_sbSli9kEiAueVYgUTQMw",
      "name": "aval:ImpairedCollateralizedLoans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesNonrecurringBasisTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R174": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
     "longName": "99940506 - Disclosure - ESTIMATION OF FAIR VALUE - Valuation of equity instruments level 3 (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Valuation of equity instruments level 3 (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "174",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember_c-m9z_CwPEKKyJg2Td-Cjg",
      "name": "aval:SensitivityOfInvestments",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_EquityInvestmentsMember_ifrs-full_LevelsOfFairValueHierarchyAxis_ifrs-full_Level3OfFairValueHierarchyMember_srt_StatementScenarioAxis_aval_FavorableScenarioMember_JRaEqNxm2Ua8AksP1wIYRw",
      "name": "aval:SensitivityOfInvestments",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutSensitivityAnalysisOfChangesOnAssumptionsRelatedToInvestmentsClassifiedAsEquityInstrumentsAtFvociTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R175": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails",
     "longName": "99940507 - Disclosure - ESTIMATION OF FAIR VALUE - Valuation of equity instruments through profit or loss (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Valuation of equity instruments through profit or loss (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "175",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseMarketValue",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutSensitivityAnalysisOfChangesOnAssumptionsRelatedToInvestmentsClassifiedAsEquityInstrumentsAtFvtplTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseMarketValue",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutSensitivityAnalysisOfChangesOnAssumptionsRelatedToInvestmentsClassifiedAsEquityInstrumentsAtFvtplTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R176": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
     "longName": "99940508 - Disclosure - ESTIMATION OF FAIR VALUE - Sensitivity analysis of main equity securities (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Sensitivity analysis of main equity securities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "176",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:SensitivityAnalysisPercentageOfValuationSample",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ix:continuation",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R177": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails",
     "longName": "99940509 - Disclosure - ESTIMATION OF FAIR VALUE - Sensitivity analysis (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Sensitivity analysis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "177",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_UnobservableInputsAxis_ifrs-full_WeightedAverageCostOfCapitalMeasurementInputMember_VJaVeDxj9Ea0YJw7vIBk9A",
      "name": "aval:EffectOnFairValueOfUnconditionalTransferRightsOfGasPipelinesToGovernmentEntitiesDueToIncreaseInBasisPoint",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutSensitivityAnalysisOfAssumptionsTransferRightsOfGasPipelinesToGovernmentEntitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_UnobservableInputsAxis_ifrs-full_WeightedAverageCostOfCapitalMeasurementInputMember_VJaVeDxj9Ea0YJw7vIBk9A",
      "name": "aval:EffectOnFairValueOfUnconditionalTransferRightsOfGasPipelinesToGovernmentEntitiesDueToIncreaseInBasisPoint",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutSensitivityAnalysisOfAssumptionsTransferRightsOfGasPipelinesToGovernmentEntitiesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R178": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
     "longName": "99940510 - Disclosure - ESTIMATION OF FAIR VALUE - Transfers between level 1, level 2 and level 3 of the fair value hierarchy (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Transfers between level 1, level 2 and level 3 of the fair value hierarchy (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "178",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_ifrs-full_LevelsOfFairValueHierarchyAxis_aval_LevelTwoToOneMember_caDuEwCbAUuB7er666eBew",
      "name": "ifrs-full:DebtInstrumentsHeld",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2023_ifrs-full_LevelsOfFairValueHierarchyAxis_aval_LevelTwoToOneMember_caDuEwCbAUuB7er666eBew",
      "name": "ifrs-full:DebtInstrumentsHeld",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R179": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
     "longName": "99940511 - Disclosure - ESTIMATION OF FAIR VALUE - Reconciliation Level 3 of the fair value hierarchy - Tabular disclosure (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Reconciliation Level 3 of the fair value hierarchy - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "179",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_ClassesOfFinancialAssetsAxis_aval_FinancialAssetsInConcessionMember_ifrs-full_LevelsOfFairValueHierarchyAxis_ifrs-full_Level3OfFairValueHierarchyMember_ifrs-full_MeasurementAxis_ifrs-full_RecurringFairValueMeasurementMember_nj1gA6yock-VHiVirW1WQQ",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutChangesInLevel3FairvalueCategory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R180": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
     "longName": "99940512 - Disclosure - ESTIMATION OF FAIR VALUE - Reconciliation Level 3 of the fair value hierarchy - Additional information (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Reconciliation Level 3 of the fair value hierarchy - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "180",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_dei_LegalEntityAxis_aval_BancoDeBogotaSaMember_oYg3wIScAUWc_MbmYoJAUg",
      "name": "ifrs-full:PurchasesFairValueMeasurementAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "aval:DisclosureOfDetailedInformationAboutChangesInLevel3FairvalueCategory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_dei_LegalEntityAxis_aval_BancoDeBogotaSaMember_oYg3wIScAUWc_MbmYoJAUg",
      "name": "ifrs-full:PurchasesFairValueMeasurementAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "aval:DisclosureOfDetailedInformationAboutChangesInLevel3FairvalueCategory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R181": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
     "longName": "99940513 - Disclosure - ESTIMATION OF FAIR VALUE - Fair value of financial assets recognized at amortized cost (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Fair value of financial assets recognized at amortized cost (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "181",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioAndInvestmentsInDebtSecuritiesAtAmortisedCostMember_QBICAMcJh0Gb-SaOTt2Krg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialAssetsAndLiabilitiesAccountedAtAmortizedCostAndValuedAtFairValueOnlyForPurposesOfThisDisclosureTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R182": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
     "longName": "99940514 - Disclosure - ESTIMATION OF FAIR VALUE - Fair value of financial liabilities recognized at amortized cost (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Fair value of financial liabilities recognized at amortized cost (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "182",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember_R7glkHQI5k2UjXPtYCuDbQ",
      "name": "ifrs-full:FinancialLiabilitiesAtFairValue",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R183": {
     "role": "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
     "longName": "99940515 - Disclosure - ESTIMATION OF FAIR VALUE - Textual (Details)",
     "shortName": "ESTIMATION OF FAIR VALUE - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "183",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:PriceOfNaturalRubber",
      "unitRef": "Unit_Divide_COP_T_49zcszbHokK39lpextgNag",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:PriceOfNaturalRubber",
      "unitRef": "Unit_Divide_COP_T_49zcszbHokK39lpextgNag",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R184": {
     "role": "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
     "longName": "99940601 - Disclosure - CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES - Financial assets (Details)",
     "shortName": "CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES - Financial assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "184",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_OtherAccountsReceivableAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueAndAtAmortizedCostMember_AhXUjViS9kGGfEa0Cp4d9Q",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R185": {
     "role": "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
     "longName": "99940602 - Disclosure - CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES - Financial liabilities (Details)",
     "shortName": "CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES - Financial liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "185",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R186": {
     "role": "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
     "longName": "99940701 - Disclosure - CASH AND CASH EQUIVALENTS - Tabular disclosure (Details)",
     "shortName": "CASH AND CASH EQUIVALENTS - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "186",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_srt_CurrencyAxis_currency_COP_d8Tde9tT80uVl_Dr_gJNrA",
      "name": "ifrs-full:Cash",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsTextBlock",
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R187": {
     "role": "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
     "longName": "99940702 - Disclosure - CASH AND CASH EQUIVALENTS - Textual (Details)",
     "shortName": "CASH AND CASH EQUIVALENTS - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "187",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:MandatoryReserveDepositsAtCentralBanks",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:MandatoryReserveDepositsAtCentralBanks",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R188": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
     "longName": "99940801 - Disclosure - TRADING ASSETS AND LIABILITIES - Trading assets (Details)",
     "shortName": "TRADING ASSETS AND LIABILITIES - Trading assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "188",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R189": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails",
     "longName": "99940802 - Disclosure - TRADING ASSETS AND LIABILITIES - Trading liabilities (Details)",
     "shortName": "TRADING ASSETS AND LIABILITIES - Trading liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "189",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R190": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTotalTradingAssetsAndLiabilitiesNetDetails",
     "longName": "99940803 - Disclosure - TRADING ASSETS AND LIABILITIES - Total trading assets and liabilities, net (Details)",
     "shortName": "TRADING ASSETS AND LIABILITIES - Total trading assets and liabilities, net (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "190",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:TradingAssetsAndLiabilitiesNet",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBalancesOfTradingAssetsAndLiabilitiesTableTextBlock",
       "ifrs-full:DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:TradingAssetsAndLiabilitiesNet",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBalancesOfTradingAssetsAndLiabilitiesTableTextBlock",
       "ifrs-full:DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R191": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
     "longName": "99940804 - Disclosure - TRADING ASSETS AND LIABILITIES - Investments in debt securities at fair value (Details)",
     "shortName": "TRADING ASSETS AND LIABILITIES - Investments in debt securities at fair value (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "191",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R192": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
     "longName": "99940805 - Disclosure - TRADING ASSETS AND LIABILITIES - Investments in equity securities at fair value (Details)",
     "shortName": "TRADING ASSETS AND LIABILITIES - Investments in equity securities at fair value (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "192",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_PrivateRealEstateEquityFundNexusMember_1WIwdc-OHUeXTm-1GKm20Q",
      "name": "aval:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldEquitySecurities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "ifrs-full:DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R193": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
     "longName": "99940806 - Disclosure - TRADING ASSETS AND LIABILITIES - Trading derivative assets (Details)",
     "shortName": "TRADING ASSETS AND LIABILITIES - Trading derivative assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "193",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:DerivativeFinancialAssetsHeldForTrading",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:DerivativeFinancialAssetsHeldForTrading",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R194": {
     "role": "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails",
     "longName": "99940807 - Disclosure - TRADING ASSETS AND LIABILITIES - Trading derivative liabilities (Details)",
     "shortName": "TRADING ASSETS AND LIABILITIES - Trading derivative liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "194",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:DerivativeFinancialLiabilitiesHeldForTrading",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialLiabilitiesAxis_ifrs-full_ForwardContractMember_RCwJxj4B9kW43zt4YE8Swg",
      "name": "ifrs-full:DerivativeFinancialLiabilitiesHeldForTrading",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R195": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
     "longName": "99940901 - Disclosure - INVESTMENT SECURITIES - Balances of investment securities (Details)",
     "shortName": "INVESTMENT SECURITIES - Balances of investment securities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "195",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_AccumulatedImpairmentMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesMember_WskCEdGdKkCnKetPVxrasg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBalancesOfInvestmentSecuritiesTableTextBlock",
       "aval:DisclosureOfInvestmentSecuritiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R196": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
     "longName": "99940902 - Disclosure - INVESTMENT SECURITIES - Investments in debt securities mandatorily at FVTPL (Details)",
     "shortName": "INVESTMENT SECURITIES - Investments in debt securities mandatorily at FVTPL (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "196",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R197": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
     "longName": "99940903 - Disclosure - INVESTMENT SECURITIES - Investments in debt securities at fair value through OCI (Details)",
     "shortName": "INVESTMENT SECURITIES - Investments in debt securities at fair value through OCI (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "197",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_RG5ZXcIszU66OGGA4Nd5_A",
      "name": "aval:FinancialAssetsAtCost",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfInvestmentsInDebtSecuritiesAtFairValueThroughOCITableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_RG5ZXcIszU66OGGA4Nd5_A",
      "name": "aval:FinancialAssetsAtCost",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfInvestmentsInDebtSecuritiesAtFairValueThroughOCITableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R198": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesAmountsReclassifiedToProfitOrLossFromOciBeforeTaxesDetails",
     "longName": "99940904 - Disclosure - INVESTMENT SECURITIES - Amounts reclassified to profit or loss from OCI before taxes (Details)",
     "shortName": "INVESTMENT SECURITIES - Amounts reclassified to profit or loss from OCI before taxes (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "198",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:RedemptionsOrSalesReclassifiedFromOCIBeforeTaxToProfitOrLoss",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfInvestmentDebtSecuritiesFvociAmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeGrossOfTaxTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:RedemptionsOrSalesReclassifiedFromOCIBeforeTaxToProfitOrLoss",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfInvestmentDebtSecuritiesFvociAmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeGrossOfTaxTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R199": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
     "longName": "99940905 - Disclosure - INVESTMENT SECURITIES - Investments in debt securities at amortized cost (Details)",
     "shortName": "INVESTMENT SECURITIES - Investments in debt securities at amortized cost (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "199",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesMember_ifrs-full_MaturityAxis_ifrs-full_NotLaterThanOneMonthMember_jDKCmlTXWU-RRoBbG4JeiA",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfSummaryOfInvestmentsInDebtSecuritiesAtAmortizedCostByMaturityDatesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R200": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
     "longName": "99940906 - Disclosure - INVESTMENT SECURITIES - Investment in debt at amortized cost pledged as collateral (Details)",
     "shortName": "INVESTMENT SECURITIES - Investment in debt at amortized cost pledged as collateral (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "200",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_jteQMSPKgECACZiHut5lGQ",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:InvestmentInDebtAtAmortizedCostSecuritiesPledgedAsCollateralTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_PledgedInMoneyMarketOperationsMember_8PJwzT-wS0WEZZKyzD-AEw",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:InvestmentInDebtAtAmortizedCostSecuritiesPledgedAsCollateralTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R201": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
     "longName": "99940907 - Disclosure - INVESTMENT SECURITIES - Investments in equity securities at fair value through OCI (Details)",
     "shortName": "INVESTMENT SECURITIES - Investments in equity securities at fair value through OCI (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "201",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_EquityInvestmentsMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_N6ZfFbsXZ0q_fQOw_nqR3g",
      "name": "aval:FinancialAssetsAtCost",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfInvestmentsInEquitySecuritiesAtFairValueThroughOCITableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_EquityInvestmentsMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_N6ZfFbsXZ0q_fQOw_nqR3g",
      "name": "aval:FinancialAssetsAtCost",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfInvestmentsInEquitySecuritiesAtFairValueThroughOCITableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R202": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
     "longName": "99940908 - Disclosure - INVESTMENT SECURITIES - Equity instruments through OCI - Tabular disclosure (Details)",
     "shortName": "INVESTMENT SECURITIES - Equity instruments through OCI - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "202",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember_ifrs-full_ClassesOfAssetsAxis_ifrs-full_EquityInvestmentsMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_InvestmentSecuritiesAtFairValueMember_ifrs-full_CounterpartiesAxis_aval_GrupoEnergiaBogotaSaEspMember_WveqHuMy5EWVTC-MOq9F4w",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfEquitySecuritiesAtFairValueThroughOciTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R203": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciDividendIncomeDetails",
     "longName": "99940909 - Disclosure - INVESTMENT SECURITIES - Equity instruments through OCI - Dividend income (Details)",
     "shortName": "INVESTMENT SECURITIES - Equity instruments through OCI - Dividend income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "203",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RevenueFromDividends",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R204": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingChangesInFluctuationDetails",
     "longName": "99941001 - Disclosure - HEDGE ACCOUNTING - Changes in the fluctuation (Details)",
     "shortName": "HEDGE ACCOUNTING - Changes in the fluctuation (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "204",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:ClosingForeignExchangeRate",
      "unitRef": "Unit_Divide_COP_USD_scfimB2VQE26oBjx2CoKyQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R205": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
     "longName": "99941002 - Disclosure - HEDGE ACCOUNTING - Movements of other comprehensive income related to hedges of net investment in foreign operations (Details)",
     "shortName": "HEDGE ACCOUNTING - Movements of other comprehensive income related to hedges of net investment in foreign operations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "205",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedBeforeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_MultiFinancialHoldingMember_d-UuspqZ6kqbl8ZHHIjgxQ",
      "name": "aval:GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedBeforeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R206": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
     "longName": "99941003 - Disclosure - HEDGE ACCOUNTING - Hedging operations (Details)",
     "shortName": "HEDGE ACCOUNTING - Hedging operations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "206",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfHedgesAxis_ifrs-full_HedgesOfNetInvestmentInForeignOperationsMember_IuXHNt1IV0mm1HjH77G5Gw",
      "name": "ifrs-full:InvestmentsInSubsidiaries",
      "unitRef": "Unit_Standard_USD_PdyR3026CU2Tjt77xbO6fA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutHedgeInForeignCurrencyEquityInvestmentsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R207": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
     "longName": "99941004 - Disclosure - HEDGE ACCOUNTING - Accumulated OCI (Details)",
     "shortName": "HEDGE ACCOUNTING - Accumulated OCI (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "207",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:AccumulatedOtherComprehensiveIncome",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_TypesOfHedgesAxis_ifrs-full_CashFlowHedgesMember_ewW5yxeCd0mkgJQJk2fasA",
      "name": "ifrs-full:AccumulatedOtherComprehensiveIncome",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R208": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
     "longName": "99941005 - Disclosure - HEDGE ACCOUNTING - Cash flow hedges (Details)",
     "shortName": "HEDGE ACCOUNTING - Cash flow hedges (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "208",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:HedgingInstrumentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TypesOfHedgesAxis_ifrs-full_CashFlowHedgesMember_sxsAtaa0Tk-nCn8U-YXr3w",
      "name": "aval:IncomeInUsDollarsForecasted",
      "unitRef": "Unit_Standard_USD_PdyR3026CU2Tjt77xbO6fA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R209": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
     "longName": "99941006 - Disclosure - HEDGE ACCOUNTING - Interest rate swaps and cross currency swaps (Details)",
     "shortName": "HEDGE ACCOUNTING - Interest rate swaps and cross currency swaps (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "209",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:HedgingInstrumentAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_HedgingInstrumentsAxis_aval_OtherAccountsReceivableMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_ifrs-full_TypesOfHedgesAxis_ifrs-full_HedgesOfNetInvestmentInForeignOperationsMember_Akd6NNuoCEafVjbe4yF7Mw",
      "name": "aval:NominalAmountOfHedgedItem",
      "unitRef": "Unit_Standard_USD_PdyR3026CU2Tjt77xbO6fA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfSwapsToReduceExchangeRateRiskOfFinancialLiabilitiesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R210": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
     "longName": "99941007 - Disclosure - HEDGE ACCOUNTING - Hedging of interest rate risk (Details)",
     "shortName": "HEDGE ACCOUNTING - Hedging of interest rate risk (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "210",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:HedgingInstrumentAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_HedgingInstrumentsAxis_ifrs-full_InterestRateSwapContractMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoPopularSAMember_ifrs-full_TypesOfHedgesAxis_ifrs-full_HedgesOfNetInvestmentInForeignOperationsMember_0QKIkSWVpkSfPBvuFJxL4g",
      "name": "aval:NominalAmountOfHedgedItem",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R211": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
     "longName": "99941008 - Disclosure - HEDGE ACCOUNTING - Fair value hedges (Details)",
     "shortName": "HEDGE ACCOUNTING - Fair value hedges (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "211",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:HedgingInstrumentAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeOccidenteSaMember_JTU5GDF-OUO8PTxukXTilw",
      "name": "ifrs-full:NominalAmountOfHedgingInstrument",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R212": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
     "longName": "99941009 - Disclosure - HEDGE ACCOUNTING - Fair value and interest expense (Details)",
     "shortName": "HEDGE ACCOUNTING - Fair value and interest expense (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "212",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:GainLossOnChangeInFairValueOfHedgingInstrumentUsedAsBasisForRecognisingHedgeIneffectiveness",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ScheduleOfChangeInFairValueAndInterestExpensesOfHedgingInstrumentTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_X7Mh8uUrIkyQXI6roUBiYw",
      "name": "ifrs-full:InterestExpenseOnFinancialLiabilitiesDesignatedAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:ScheduleOfChangeInFairValueAndInterestExpensesOfHedgingInstrumentTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R213": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
     "longName": "99941010 - Disclosure - HEDGE ACCOUNTING - Financial instruments for hedging - assets (Details)",
     "shortName": "HEDGE ACCOUNTING - Financial instruments for hedging - assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "213",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:HedgingInstrumentAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_ifrs-full_ForwardContractMember_qzJTb-e8eUahNKdWVnQe9w",
      "name": "ifrs-full:HedgingInstrumentAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R214": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
     "longName": "99941011 - Disclosure - HEDGE ACCOUNTING - Financial instruments for hedging - liabilities (Details)",
     "shortName": "HEDGE ACCOUNTING - Financial instruments for hedging - liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "214",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:HedgingInstrumentAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfFinancialLiabilitiesAxis_ifrs-full_ForwardContractMember_RCwJxj4B9kW43zt4YE8Swg",
      "name": "ifrs-full:HedgingInstrumentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R215": {
     "role": "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
     "longName": "99941012 - Disclosure - HEDGE ACCOUNTING - Textual (Details)",
     "shortName": "HEDGE ACCOUNTING - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "215",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:OtherFinancialLiabilitiesHedgeNetForeignInvestment",
      "unitRef": "Unit_Standard_USD_PdyR3026CU2Tjt77xbO6fA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:OtherFinancialLiabilitiesHedgeNetForeignInvestment",
      "unitRef": "Unit_Standard_USD_PdyR3026CU2Tjt77xbO6fA",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R216": {
     "role": "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
     "longName": "99941101 - Disclosure - LOANS - Credit portfolio (Details)",
     "shortName": "LOANS - Credit portfolio (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "216",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_CommercialMember_vCB5Ni_rjUSdl8tvpGjpmw",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDistributionOfCreditPortfolioTextBlock",
       "ifrs-full:DisclosureOfLoansAndAdvancesToCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R217": {
     "role": "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
     "longName": "99941102 - Disclosure - LOANS - Loan portfolio by maturity (Details)",
     "shortName": "LOANS - Loan portfolio by maturity (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "217",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_CategoriesOfFinancialAssetsAxis_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_LoanPortfolioMember_ifrs-full_MaturityAxis_ifrs-full_NotLaterThanOneYearMember_Lwco11HQNkeVq5n376gVdA",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDistributionOfLoansPortfolioByMaturityPeriodTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R218": {
     "role": "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
     "longName": "99941103 - Disclosure - LOANS - Interest income by portfolio (Details)",
     "shortName": "LOANS - Interest income by portfolio (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "218",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InterestIncomeOnFinancialAssetsAtAmortisedCostLoans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfFinancialAssetsAxis_aval_CommercialLendingPortfolioMember_F8eaPwgBl0CLm1tGkqo9Hw",
      "name": "aval:InterestIncomeOnFinancialAssetsAtAmortisedCostLoans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInterestIncomeByPortfolioTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R219": {
     "role": "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails",
     "longName": "99941104 - Disclosure - LOANS - Financial leasing portfolio - Reconciliation (Details)",
     "shortName": "LOANS - Financial leasing portfolio - Reconciliation (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "219",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:UndiscountedFinanceLeasePaymentsToBeReceived",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutReconciliationOfUndiscountedLeasePaymentsToNetInvestmentInFinanceLeaseTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:UndiscountedFinanceLeasePaymentsToBeReceived",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutReconciliationOfUndiscountedLeasePaymentsToNetInvestmentInFinanceLeaseTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R220": {
     "role": "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
     "longName": "99941105 - Disclosure - LOANS - Financial leasing portfolio - Contracts receivable (Details)",
     "shortName": "LOANS - Financial leasing portfolio - Contracts receivable (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "220",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:GrossInvestmentInFinanceLease",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutReconciliationOfUndiscountedLeasePaymentsToNetInvestmentInFinanceLeaseTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_MaturityAxis_ifrs-full_NotLaterThanOneYearMember_QBKwxOXzW0i3vQZQcw7KQg",
      "name": "aval:GrossInvestmentInFinanceLease",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutGrossInvestmentAndNetInvestmentInFinancialLeasingContractsReceivableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R221": {
     "role": "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
     "longName": "99941106 - Disclosure - LOANS - Financial leasing portfolio - Terms (Details)",
     "shortName": "LOANS - Financial leasing portfolio - Terms (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "221",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_aval_VehiclesAndComputerEquipmentMember_ifrs-full_RangeAxis_ifrs-full_BottomOfRangeMember_aZzMY_UEuUefN_qqDkC1Gw",
      "name": "ifrs-full:BorrowingsMaturity",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_aval_VehiclesAndComputerEquipmentMember_ifrs-full_RangeAxis_ifrs-full_BottomOfRangeMember_aZzMY_UEuUefN_qqDkC1Gw",
      "name": "ifrs-full:BorrowingsMaturity",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R222": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
     "longName": "99941201 - Disclosure - OTHER ACCOUNTS RECEIVABLE, NET - Net of impairment losses (Details)",
     "shortName": "OTHER ACCOUNTS RECEIVABLE, NET - Net of impairment losses (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "222",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_ifrs-full_ClassesOfFinancialAssetsAxis_aval_OtherAccountsReceivableAtAmortizedCostExceptPrepaidExpensesMember_-J2ypilc5kGiB8Y1My_Shw",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOtherReceivablesTableTextBlock",
       "ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R223": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
     "longName": "99941202 - Disclosure - OTHER ACCOUNTS RECEIVABLE, NET - Contract assets (Details)",
     "shortName": "OTHER ACCOUNTS RECEIVABLE, NET - Contract assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "223",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R224": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails",
     "longName": "99941203 - Disclosure - OTHER ACCOUNTS RECEIVABLE, NET - Other accounts receivable (Details)",
     "shortName": "OTHER ACCOUNTS RECEIVABLE, NET - Other accounts receivable (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "224",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:OtherAccountReceivablesDebtors",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOtherAccountsReceivablesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:OtherAccountReceivablesDebtors",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOtherAccountsReceivablesTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R225": {
     "role": "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails",
     "longName": "99941301 - Disclosure - NON-CURRENT ASSETS HELD FOR SALE - Roll forward (Details)",
     "shortName": "NON-CURRENT ASSETS HELD FOR SALE - Roll forward (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "225",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_ifrs-full_NoncurrentAssetsHeldForSaleMember_P6rBZovGW0OF0IgT-p926A",
      "name": "ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutMovementsOfNoncurrentAssetsHeldForSaleTableTextBlock",
       "ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R226": {
     "role": "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
     "longName": "99941302 - Disclosure - NON-CURRENT ASSETS HELD FOR SALE - Foreclosed assets, leasing agreements, other (Details)",
     "shortName": "NON-CURRENT ASSETS HELD FOR SALE - Foreclosed assets, leasing agreements, other (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "226",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfAssetsAxis_aval_ForeclosedAssetsMember_brXD4y03VEGdZ8kinq5nJA",
      "name": "ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R227": {
     "role": "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails",
     "longName": "99941303 - Disclosure - NON-CURRENT ASSETS HELD FOR SALE - Associated liabilities (Details)",
     "shortName": "NON-CURRENT ASSETS HELD FOR SALE - Associated liabilities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "227",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutLiabilitiesWithGroupsOfAssetsHeldForSaleTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutLiabilitiesWithGroupsOfAssetsHeldForSaleTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R228": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTabularDisclosureDetails",
     "longName": "99941401 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Tabular disclosure (Details)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "228",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
       "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R229": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails",
     "longName": "99941402 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Voting right percentage (Details)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Voting right percentage (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "229",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
       "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInAssociatesAxis_aval_GasNaturalDeLimaYCallaoSaCaliddaMember_qR2hY86ksUe_5sQnReE2PQ",
      "name": "ifrs-full:ProportionOfOwnershipInterestInAssociate",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInterestsInAssociatesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R230": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails",
     "longName": "99941403 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Ownership interest and book value (Details)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Ownership interest and book value (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "230",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
       "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_JointVenturesAxis_aval_RentingAutomayorSasMember_KBpDyapwcE2GDigI5oOeQA",
      "name": "ifrs-full:ProportionOfOwnershipInterestInJointVenture",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R231": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
     "longName": "99941404 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Roll forward of investment in associates (Details)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Roll forward of investment in associates (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "231",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
       "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInAssociatesAxis_ifrs-full_AssociatesMember_LmpX1qkXfEqvwIlp6QDsnw",
      "name": "aval:Acquisitions",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutMovementOfInvestmentsInAssociatesAndJointVenturesAccountsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R232": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails",
     "longName": "99941405 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Roll forward of investment in joint ventures (Details)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Roll forward of investment in joint ventures (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "232",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
       "aval:DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_JointVenturesAxis_ifrs-full_JointVenturesMember_x7W2KfyX4EKgAJvx5IC-KA",
      "name": "ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutMovementOfInvestmentsInAssociatesAndJointVenturesAccountsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R233": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
     "longName": "99941406 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Financial information of associates (Details)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Financial information of associates (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "233",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInAssociatesAxis_aval_GasNaturalDeLimaYCallaoSaCaliddaMember_EVq44wSGj0KC5kRnBExzqQ",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R234": {
     "role": "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
     "longName": "99941407 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Financial information of joint ventures (Details)",
     "shortName": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Financial information of joint ventures (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "234",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_JointVenturesAxis_aval_RentingAutomayorSaMember_WOA5CFtzIkyORB6aAEav3w",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfJointVenturesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R235": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
     "longName": "99941501 - Disclosure - TANGIBLE ASSETS - Carrying Value (Details)",
     "shortName": "TANGIBLE ASSETS - Carrying Value (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "235",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_ifrs-full_GrossCarryingAmountMember_w731KvkfnkaoOpC5xR6BVQ",
      "name": "aval:IncreaseDecreaseDueToChangesInLeaseVariablesPropertyPlantAndEquipment",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory",
       "ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R236": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
     "longName": "99941502 - Disclosure - TANGIBLE ASSETS - Tangible assets for own use (Details)",
     "shortName": "TANGIBLE ASSETS - Tangible assets for own use (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "236",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_ifrs-full_LandMember_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis_ifrs-full_PropertyPlantAndEquipmentNotSubjectToOperatingLeasesMember_eq8l3QJ7Y0iVT3RfOFHE7w",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R237": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
     "longName": "99941503 - Disclosure - TANGIBLE ASSETS - Right-of-use assets (Details)",
     "shortName": "TANGIBLE ASSETS - Right-of-use assets (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "237",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfAssetsAxis_ifrs-full_RightofuseAssetsMember_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_ifrs-full_LandMember_lJpTfz6oz0m1mjhutoQkQA",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R238": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
     "longName": "99941504 - Disclosure - TANGIBLE ASSETS - Investment properties - Summary (Details)",
     "shortName": "TANGIBLE ASSETS - Investment properties - Summary (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "238",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:InvestmentPropertyCost",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:InvestmentPropertyCost",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R239": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails",
     "longName": "99941505 - Disclosure - TANGIBLE ASSETS - Investment properties - Amounts recognized in statement of income (Details)",
     "shortName": "TANGIBLE ASSETS - Investment properties - Amounts recognized in statement of income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "239",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RentalIncomeFromInvestmentProperty",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RentalIncomeFromInvestmentProperty",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R240": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
     "longName": "99941506 - Disclosure - TANGIBLE ASSETS - Operating Lease (Details)",
     "shortName": "TANGIBLE ASSETS - Operating Lease (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "240",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_ifrs-full_ComputerEquipmentMember_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis_ifrs-full_PropertyPlantAndEquipmentSubjectToOperatingLeasesMember_16y2-Ol4eUSlVczJvD83Pw",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R241": {
     "role": "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails",
     "longName": "99941507 - Disclosure - TANGIBLE ASSETS - Textual (Details)",
     "shortName": "TANGIBLE ASSETS - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "241",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:AssetsReceivedInTotalOrPartialSettlementOfPaymentObligationsOfDebtorsInOtherMovements",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:AssetsReceivedInTotalOrPartialSettlementOfPaymentObligationsOfDebtorsInOtherMovements",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R242": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
     "longName": "99941601 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS - General information (Details)",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS - General information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "242",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
       "aval:ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ServiceConcessionArrangementsAxis_aval_ServiceConcessionArrangementMember_xGo-AR1160-IZZTq_lzPBA",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfBalanceOfAssetsInConcessionAgreementsTableTextBlock",
       "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R243": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
     "longName": "99941602 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS - Financial assets in concession arrangements (Details)",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS - Financial assets in concession arrangements (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "243",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ServiceConcessionArrangementsAxis_aval_ServiceConcessionArrangementMember_9_pQpReEZE6JQIbaS4VNlg",
      "name": "ifrs-full:IncreaseThroughOriginationOrPurchaseFinancialAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutServiceConcessionArrangementsExplanatory",
       "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R244": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails",
     "longName": "99941603 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS - Financial assets in concession arrangements - Additional information (Details)",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS - Financial assets in concession arrangements - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "244",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_BusinessCombinationsAxis_aval_CoviorienteMember_WeV2DoSIN0GfgonsWCP4mA",
      "name": "aval:FinancialAssetsInWorkInProgress",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutServiceConcessionArrangementsExplanatory",
       "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_BusinessCombinationsAxis_aval_CoviorienteMember_WeV2DoSIN0GfgonsWCP4mA",
      "name": "aval:FinancialAssetsInWorkInProgress",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutServiceConcessionArrangementsExplanatory",
       "ifrs-full:DisclosureOfServiceConcessionArrangementsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R245": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
     "longName": "99941604 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS - Intangible assets in concession arrangements - Tabular disclosure (Details)",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS - Intangible assets in concession arrangements - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "245",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:IntangibleAssetsOtherThanGoodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOtherIntangibleAssetsTextBlock",
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_ServiceConcessionArrangementsAxis_aval_EnergyAndGasConcessionArrangementMember_9ku-kuK8EUey1QbHpsomyQ",
      "name": "ifrs-full:IntangibleAssetsOtherThanGoodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R246": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
     "longName": "99941605 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS - Intangible assets in concession arrangements - Additional information (Details)",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS - Intangible assets in concession arrangements - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "246",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ServiceConcessionArrangementsAxis_aval_EnergyAndGasConcessionArrangementMember_K-MmFs_5KEiX9Pkp4Zqa3w",
      "name": "ifrs-full:BorrowingCostsCapitalised",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ServiceConcessionArrangementsAxis_aval_EnergyAndGasConcessionArrangementMember_K-MmFs_5KEiX9Pkp4Zqa3w",
      "name": "ifrs-full:BorrowingCostsCapitalised",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R247": {
     "role": "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
     "longName": "99941606 - Disclosure - CONCESSION ARRANGEMENTS RIGHTS - Summary of the main concession contracts (Details)",
     "shortName": "CONCESSION ARRANGEMENTS RIGHTS - Summary of the main concession contracts (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "247",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ServiceConcessionArrangementsAxis_aval_EnergyAndGasConcessionArrangementMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_SurtigasSaEspMember_osGjdkFcWEu8Z-qsYdQfYQ",
      "name": "aval:PercentageOfProgressOfBuilding",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ServiceConcessionArrangementsAxis_aval_EnergyAndGasConcessionArrangementMember_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_SurtigasSaEspMember_osGjdkFcWEu8Z-qsYdQfYQ",
      "name": "aval:PercentageOfProgressOfBuilding",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R248": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwillRollForwardTabularDisclosureDetails",
     "longName": "99941701 - Disclosure - GOODWILL - Roll forward - Tabular disclosure (Details)",
     "shortName": "GOODWILL - Roll forward - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "248",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:Goodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R249": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
     "longName": "99941702 - Disclosure - GOODWILL - Carrying amount (Details)",
     "shortName": "GOODWILL - Carrying amount (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "249",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Goodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis_aval_SociedadAdministradoraDeFondosDePensionesYCesantiasPorvenirSaMember_Gq0mERkcSUy0XCD9n5_8WQ",
      "name": "ifrs-full:Goodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory",
       "ifrs-full:DisclosureOfGoodwillExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R250": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwillRollForwardAdditionalInformationDetails",
     "longName": "99941703 - Disclosure - GOODWILL - Roll forward - Additional information (Details)",
     "shortName": "GOODWILL - Roll forward - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "250",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesGoodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory",
       "ifrs-full:DisclosureOfGoodwillExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R251": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
     "longName": "99941704 - Disclosure - GOODWILL - Cash-generating units - General information (Details)",
     "shortName": "GOODWILL - Cash-generating units - General information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "251",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfGoodwillExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfGoodwillExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R252": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
     "longName": "99941705 - Disclosure - GOODWILL - Cash-generating units - Impairment test assumptions (Details)",
     "shortName": "GOODWILL - Cash-generating units - Impairment test assumptions (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "252",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis_aval_SociedadAdministradoraDeFondosDePensionesYCesantiasPorvenirSaMember_Gq0mERkcSUy0XCD9n5_8WQ",
      "name": "ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis_aval_SociedadAdministradoraDeFondosDePensionesYCesantiasPorvenirSaMember_ifrs-full_MaturityAxis_ifrs-full_NotLaterThanOneYearMember_Ejkx6oWjwk60U4zSTCOxcA",
      "name": "aval:InterestRateOnInvestments",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutMainPremisesUsedInImpairmentTestReportsTakenAsBasisForImpairmentTestingTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R253": {
     "role": "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails",
     "longName": "99941706 - Disclosure - GOODWILL - Cash-generating units - Acquisitions (Details)",
     "shortName": "GOODWILL - Cash-generating units - Acquisitions (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "253",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_BusinessCombinationsAxis_aval_BancoDeCreditoYDesarrolloSocialMember_GUV1qfJbuEmTlmnJOZJtQw",
      "name": "ifrs-full:PercentageOfVotingEquityInterestsAcquired",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_BusinessCombinationsAxis_aval_BancoDeCreditoYDesarrolloSocialMember_GUV1qfJbuEmTlmnJOZJtQw",
      "name": "ifrs-full:PercentageOfVotingEquityInterestsAcquired",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R254": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails",
     "longName": "99941801 - Disclosure - OTHER INTANGIBLE ASSETS (Details)",
     "shortName": "OTHER INTANGIBLE ASSETS (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "254",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:IntangibleAssetsOtherThanGoodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOtherIntangibleAssetsTextBlock",
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RetirementsIntangibleAssetsOtherThanGoodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutOtherIntangibleAssetsTextBlock",
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R255": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails",
     "longName": "99941901 - Disclosure - INCOME TAX - Components of income tax expense (Details)",
     "shortName": "INCOME TAX - Components of income tax expense (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "255",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:CurrentTaxExpenseIncome",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:MajorComponentsOfIncomeTaxExpensesTextBlock",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:CurrentTaxExpenseIncome",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:MajorComponentsOfIncomeTaxExpensesTextBlock",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R256": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
     "longName": "99941902 - Disclosure - INCOME TAX - Reconciliation between total expenses of income tax and tax expense - General information (Details)",
     "shortName": "INCOME TAX - Reconciliation between total expenses of income tax and tax expense - General information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "256",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ApplicableTaxRate",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:ReconciliationBetweenEffectiveIncomeTaxExplanatoryTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:IndividualValueOfTaxValueUnit",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R257": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
     "longName": "99941903 - Disclosure - INCOME TAX - Reconciliation between total expenses of income tax and tax expense - Tabular disclosure (Details)",
     "shortName": "INCOME TAX - Reconciliation between total expenses of income tax and tax expense - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "257",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:AccountingProfit",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:ReconciliationBetweenEffectiveIncomeTaxExplanatoryTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:AccountingProfit",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:ReconciliationBetweenEffectiveIncomeTaxExplanatoryTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R258": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails",
     "longName": "99941904 - Disclosure - INCOME TAX - Tax losses and excess of presumptive income (Details)",
     "shortName": "INCOME TAX - Tax losses and excess of presumptive income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "258",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:TaxLossCarryForwardInExcessOfMinimumPresumptiveIncomeExplanatoryTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:TaxLossCarryForwardInExcessOfMinimumPresumptiveIncomeExplanatoryTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R259": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesFromInvestmentsInSubsidiariesDetails",
     "longName": "99941905 - Disclosure - INCOME TAX - Deferred taxes from investments in subsidiaries (Details)",
     "shortName": "INCOME TAX - Deferred taxes from investments in subsidiaries (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "259",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R260": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
     "longName": "99941906 - Disclosure - INCOME TAX - Deferred taxes by type of temporary difference (Details)",
     "shortName": "INCOME TAX - Deferred taxes by type of temporary difference (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "260",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:DeferredTaxLiabilityAsset",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2022_To_12_31_2022_tATvadldx0mVkLp9UJrvwA",
      "name": "ifrs-full:IncreaseDecreaseThroughLossOfControlOfSubsidiaryDeferredTaxLiabilityAsset",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R261": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
     "longName": "99941907 - Disclosure - INCOME TAX - Deferred tax assets and liabilities - Gross deferred tax and offset (Details)",
     "shortName": "INCOME TAX - Deferred tax assets and liabilities - Gross deferred tax and offset (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "261",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:DeferredTaxLiabilityAsset",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_aval_DeferredTaxAssetsMember_oeIahgIVX0CcLwhOPF9PCg",
      "name": "aval:DeferredTaxLiabilityAssetOffset",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R262": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails",
     "longName": "99941908 - Disclosure - INCOME TAX - Deferred tax assets and liabilities - Statement of financial position (Details)",
     "shortName": "INCOME TAX - Deferred tax assets and liabilities - Statement of financial position (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "262",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:DeferredTaxAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R263": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails",
     "longName": "99941909 - Disclosure - INCOME TAX - Estimates to recover income tax assets and settle income tax liabilities - Deferred tax (Details)",
     "shortName": "INCOME TAX - Estimates to recover income tax assets and settle income tax liabilities - Deferred tax (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "263",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:DeferredTaxLiabilityAsset",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_MaturityAxis_ifrs-full_LaterThanOneYearMember_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_aval_DeferredTaxAssetsMember_KIQ7Z-CFmkeqf_TTXaXZtw",
      "name": "ifrs-full:DeferredTaxLiabilityAsset",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R264": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
     "longName": "99941910 - Disclosure - INCOME TAX - Estimates to recover income tax assets and settle income tax liabilities - Current tax (Details)",
     "shortName": "INCOME TAX - Estimates to recover income tax assets and settle income tax liabilities - Current tax (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "264",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CurrentTaxAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_MaturityAxis_ifrs-full_LaterThanOneYearMember_6QFFZ0m1_Em9sHzBZ5mBbw",
      "name": "ifrs-full:CurrentTaxAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R265": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
     "longName": "99941911 - Disclosure - INCOME TAX - Effect of the current and deferred taxes in each component of other comprehensive income in equity (Details)",
     "shortName": "INCOME TAX - Effect of the current and deferred taxes in each component of other comprehensive income in equity (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "265",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedBeforeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutEffectsOfCurrentAndDeferredIncomeTaxesInEachComponentOfOtherComprehensiveIncomeTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R266": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxUncertaintiesInOpenTaxPositionsDetails",
     "longName": "99941912 - Disclosure - INCOME TAX - Uncertainties in open tax positions (Details)",
     "shortName": "INCOME TAX - Uncertainties in open tax positions (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "266",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:TaxUncertaintyLiability",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:TaxUncertaintyLiability",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R267": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxWithholdingsTaxOnDividendsPaidBetweenEntitiesDetails",
     "longName": "99941913 - Disclosure - INCOME TAX - Withholdings tax on dividends paid between entities (Details)",
     "shortName": "INCOME TAX - Withholdings tax on dividends paid between entities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "267",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:WithholdingsTaxOnDividendsPaidToEntities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:WithholdingsTaxOnDividendsPaidToEntities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R268": {
     "role": "http://www.grupoaval.com/role/DisclosureIncomeTaxMinimumTaxRateDetails",
     "longName": "99941914 - Disclosure - INCOME TAX - Minimum tax rate (Details)",
     "shortName": "INCOME TAX - Minimum tax rate (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "268",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:MinimumTaxRate",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:MinimumTaxRate",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R269": {
     "role": "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
     "longName": "99942001 - Disclosure - CUSTOMER DEPOSITS - Deposits - Tabular disclosure (Details)",
     "shortName": "CUSTOMER DEPOSITS - Deposits - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "269",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:BalancesOnCurrentAccountsFromCustomers",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:TotalDemandDeposits",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDepositsTextBlock",
       "ifrs-full:DisclosureOfDepositsFromCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R270": {
     "role": "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsAdditionalInformationDetails",
     "longName": "99942002 - Disclosure - CUSTOMER DEPOSITS - Deposits - Additional information (Details)",
     "shortName": "CUSTOMER DEPOSITS - Deposits - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "270",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:DepositsFromCustomersNoncurrent",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDepositsTextBlock",
       "ifrs-full:DisclosureOfDepositsFromCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:DepositsFromCustomersNoncurrent",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutDepositsTextBlock",
       "ifrs-full:DisclosureOfDepositsFromCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R271": {
     "role": "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
     "longName": "99942003 - Disclosure - CUSTOMER DEPOSITS - Effective interest rates (Details)",
     "shortName": "CUSTOMER DEPOSITS - Effective interest rates (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "271",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_RangeAxis_ifrs-full_BottomOfRangeMember_srt_CurrencyAxis_currency_COP_PSD8Ii-JNE-P3IgiCuFySQ",
      "name": "aval:CustomerDepositsEffectiveInterestRateInterestBearingCheckingAccounts",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutEffectiveInterestRatesWhichAreAccruedOnCustomerDepositsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_RangeAxis_ifrs-full_BottomOfRangeMember_srt_CurrencyAxis_currency_COP_PSD8Ii-JNE-P3IgiCuFySQ",
      "name": "aval:CustomerDepositsEffectiveInterestRateInterestBearingCheckingAccounts",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutEffectiveInterestRatesWhichAreAccruedOnCustomerDepositsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R272": {
     "role": "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails",
     "longName": "99942004 - Disclosure - CUSTOMER DEPOSITS - Concentration of deposits received (Details)",
     "shortName": "CUSTOMER DEPOSITS - Concentration of deposits received (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "272",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:DepositsFromCustomers",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:ConcentrationsOfDepositsPercentage",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ScheduleOfConcentrationOfDepositsReceivedFromCustomersPerEconomicSectorTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R273": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails",
     "longName": "99942101 - Disclosure - FINANCIAL OBLIGATIONS - Interbank borrowings, overnight funds - Tabular disclosure (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Interbank borrowings, overnight funds - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "273",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:BorrowingsAndOvernightFunds",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ScheduleOfInterbankBorrowingsOvernightFundsAndBorrowingsFromBanksAndOthersTableTextBlock",
       "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:BorrowingsAndOvernightFunds",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:ScheduleOfInterbankBorrowingsOvernightFundsAndBorrowingsFromBanksAndOthersTableTextBlock",
       "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R274": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsAdditionalInformationDetails",
     "longName": "99942102 - Disclosure - FINANCIAL OBLIGATIONS - Interbank borrowings, overnight funds - Additional information (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Interbank borrowings, overnight funds - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "274",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:FinancialObligationsSimultaneousAndRepoOperations",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:FinancialObligationsSimultaneousAndRepoOperations",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R275": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
     "longName": "99942103 - Disclosure - FINANCIAL OBLIGATIONS - Borrowings from banks and others - Tabular disclosure (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Borrowings from banks and others - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "275",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:BorrowingsFromBanksAndOthersDevelopmentEntities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:BorrowingsFromBanksAndOthersDevelopmentEntities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R276": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersAdditionalInformationDetails",
     "longName": "99942104 - Disclosure - FINANCIAL OBLIGATIONS - Borrowings from banks and others - Additional information (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Borrowings from banks and others - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "276",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:BorrowingsFromBanksAndOthersNoncurrent",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:BorrowingsFromBanksAndOthersNoncurrent",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R277": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
     "longName": "99942105 - Disclosure - FINANCIAL OBLIGATIONS - Issued bonds by issued date and maturity date - Tabular disclosure (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Issued bonds by issued date and maturity date - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "277",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:BondsIssued",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_BancoDeBogotaSaMember_X7Mh8uUrIkyQXI6roUBiYw",
      "name": "ifrs-full:RepaymentsOfBondsNotesAndDebentures",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "aval:DisclosureOfDetailedInformationAboutBondIssuedTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R278": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateAdditionalInformationDetails",
     "longName": "99942106 - Disclosure - FINANCIAL OBLIGATIONS - Issued bonds by issued date and maturity date - Additional information (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Issued bonds by issued date and maturity date - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "278",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R279": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
     "longName": "99942107 - Disclosure - FINANCIAL OBLIGATIONS - Interest expense information (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Interest expense information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "279",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:InterestExpenseOnDepositsCheckingAccounts",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:ScheduleOfInterestExpensesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:InterestExpenseOnLeaseLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:ScheduleOfInterestExpensesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R280": {
     "role": "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
     "longName": "99942108 - Disclosure - FINANCIAL OBLIGATIONS - Reconciliation of movements of liabilities to cash flows arising from financing activities (Details)",
     "shortName": "FINANCIAL OBLIGATIONS - Reconciliation of movements of liabilities to cash flows arising from financing activities (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "280",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "aval:AnalysisOfChangesInFinancingLiabilitiesBalance",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFutureMaturitiesOfBondsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_4luBw62rL0qHnMNEKXwz9Q",
      "name": "aval:AnalysisOfChangesInFinancingLiabilitiesBalance",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFutureMaturitiesOfBondsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R281": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
     "longName": "99942201 - Disclosure - EMPLOYEE BENEFITS - Liabilities for employee benefits (Details)",
     "shortName": "EMPLOYEE BENEFITS - Liabilities for employee benefits (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "281",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:GrossEmployeeBenefits",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDefinedBenefitsPlansExplanatoryTextBlock",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:GrossEmployeeBenefits",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDefinedBenefitsPlansExplanatoryTextBlock",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R282": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails",
     "longName": "99942202 - Disclosure - EMPLOYEE BENEFITS - Post-employment benefit expense (Details)",
     "shortName": "EMPLOYEE BENEFITS - Post-employment benefit expense (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "282",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_LEJ-m4YApkOBTk7Oce8ZLg",
      "name": "ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DeferredCompensationArrangementWithIndividualDisclosurePostretirementBenefitsTableTextBlock",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_LEJ-m4YApkOBTk7Oce8ZLg",
      "name": "ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DeferredCompensationArrangementWithIndividualDisclosurePostretirementBenefitsTableTextBlock",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R283": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails",
     "longName": "99942203 - Disclosure - EMPLOYEE BENEFITS - Post-employment and long-term benefits movements (Details)",
     "shortName": "EMPLOYEE BENEFITS - Post-employment and long-term benefits movements (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "283",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_GN0x9xqr70WRo3ss1OQ8Hg",
      "name": "ifrs-full:LiabilityAssetOfDefinedBenefitPlans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_dkzi_oOgJEK6lMQXT6pR_Q",
      "name": "ifrs-full:LiabilityAssetOfDefinedBenefitPlans",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R284": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails",
     "longName": "99942204 - Disclosure - EMPLOYEE BENEFITS - Assumptions (Details)",
     "shortName": "EMPLOYEE BENEFITS - Assumptions (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "284",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_dkzi_oOgJEK6lMQXT6pR_Q",
      "name": "ifrs-full:ActuarialAssumptionOfDiscountRates",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailInformationOfVariablesUsedToCalculateObligationTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_dkzi_oOgJEK6lMQXT6pR_Q",
      "name": "ifrs-full:ActuarialAssumptionOfDiscountRates",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailInformationOfVariablesUsedToCalculateObligationTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R285": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails",
     "longName": "99942205 - Disclosure - EMPLOYEE BENEFITS - Sensitivity analysis (Details)",
     "shortName": "EMPLOYEE BENEFITS - Sensitivity analysis (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "285",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ActuarialAssumptionsAxis_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_LHOPrIUbbk2cRJsWd6moiw",
      "name": "ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ActuarialAssumptionsAxis_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_LHOPrIUbbk2cRJsWd6moiw",
      "name": "ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R286": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
     "longName": "99942206 - Disclosure - EMPLOYEE BENEFITS - Future benefit payments (Details)",
     "shortName": "EMPLOYEE BENEFITS - Future benefit payments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "286",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_LEJ-m4YApkOBTk7Oce8ZLg",
      "name": "ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_DefinedBenefitPlansAxis_aval_PostemploymentbenefitsMember_LEJ-m4YApkOBTk7Oce8ZLg",
      "name": "ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R287": {
     "role": "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTextualDetails",
     "longName": "99942207 - Disclosure - EMPLOYEE BENEFITS - Textual (Details)",
     "shortName": "EMPLOYEE BENEFITS - Textual (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "287",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:PercentageOfReasonablyPossibleIncreaseAndDecreaseInActuarialAssumption",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:PercentageOfReasonablyPossibleIncreaseAndDecreaseInActuarialAssumption",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R288": {
     "role": "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails",
     "longName": "99942301 - Disclosure - PROVISIONS - Roll forward (Details)",
     "shortName": "PROVISIONS - Roll forward (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "288",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:Provisions",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:AdditionalProvisionsOtherProvisions",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfOtherProvisionsExplanatory",
       "ifrs-full:DisclosureOfProvisionsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R289": {
     "role": "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
     "longName": "99942302 - Disclosure - PROVISIONS - Estimated period to be canceled (Details)",
     "shortName": "PROVISIONS - Estimated period to be canceled (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "289",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Provisions",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_MaturityAxis_ifrs-full_NotLaterThanOneYearMember_QBKwxOXzW0i3vQZQcw7KQg",
      "name": "ifrs-full:Provisions",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfOtherProvisionsExplanatory",
       "ifrs-full:DisclosureOfProvisionsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R290": {
     "role": "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
     "longName": "99942303 - Disclosure - PROVISIONS - General information (Details)",
     "shortName": "PROVISIONS - General information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "290",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:LegalProceedingsProvision",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_ifrs-full_SubsidiariesMember_2HpQM895qEK8M_CXhh8c9Q",
      "name": "ifrs-full:OtherProvisions",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R291": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails",
     "longName": "99942401 - Disclosure - OTHER LIABILITIES - Accounts payable and other liabilities - Tabular disclosure (Details)",
     "shortName": "OTHER LIABILITIES - Accounts payable and other liabilities - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "291",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:IncomeReceivedForThirdParties",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:IncomeReceivedForThirdParties",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R292": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesClassificationDetails",
     "longName": "99942402 - Disclosure - OTHER LIABILITIES - Classification (Details)",
     "shortName": "OTHER LIABILITIES - Classification (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "292",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:OtherCurrentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfOtherLiabilitiesToBeCancelledTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:OtherCurrentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfOtherLiabilitiesToBeCancelledTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R293": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAuthorizedAndSubscribedSharesDetails",
     "longName": "99942501 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Authorized and subscribed shares (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Authorized and subscribed shares (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "293",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:NumberOfSharesAuthorised",
      "unitRef": "Unit_Standard_shares_qZogx5Cd-kqbQdKI3cuF0A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:NumberOfSharesAuthorised",
      "unitRef": "Unit_Standard_shares_qZogx5Cd-kqbQdKI3cuF0A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R294": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails",
     "longName": "99942502 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Total outstanding shares (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Total outstanding shares (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "294",
     "firstAnchor": {
      "contextRef": "As_Of_3_28_2025_tG7bfR1-VkKoIwjY0e_vXQ",
      "name": "ifrs-full:NumberOfSharesOutstanding",
      "unitRef": "Unit_Standard_shares_qZogx5Cd-kqbQdKI3cuF0A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "span",
       "ifrs-full:DescriptionOfMethodsUsedToMeasureFairValueOfNoncashAssetsDeclaredForDistributionToOwnersBeforeFinancialStatementsAuthorisedForIssue",
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod",
       "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfShareCapitalAxis_ifrs-full_OrdinarySharesMember_Ayk6szmN_0m8s-1Os0L4-Q",
      "name": "ifrs-full:NumberOfSharesOutstanding",
      "unitRef": "Unit_Standard_shares_qZogx5Cd-kqbQdKI3cuF0A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R295": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails",
     "longName": "99942503 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Outstanding shares (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Outstanding shares (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "295",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:ParValuePerShare",
      "unitRef": "Unit_Divide_COP_shares_S-3ONYodoEyi3a8LSW4_sw",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:ParValuePerShare",
      "unitRef": "Unit_Divide_COP_shares_S-3ONYodoEyi3a8LSW4_sw",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R296": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails",
     "longName": "99942504 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Appropriated retained earnings (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Appropriated retained earnings (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "296",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:OtherReserves",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:OtherReserves",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R297": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentLegalReserveDetails",
     "longName": "99942505 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Legal reserve (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Legal reserve (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "297",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:LegalReserveAsPercentageOfNetProfit",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:LegalReserveAsPercentageOfNetProfit",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R298": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails",
     "longName": "99942506 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Declared dividends (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Declared dividends (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "298",
     "firstAnchor": {
      "contextRef": "Duration_3_28_2025_To_3_28_2025_VtZJlg-gHkSDr1009-7p6A",
      "name": "aval:NetIncomeLossAttributableToParent",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod",
       "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare",
      "unitRef": "Unit_Divide_COP_shares_S-3ONYodoEyi3a8LSW4_sw",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDividendsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R299": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails",
     "longName": "99942507 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Tabular disclosure (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Tabular disclosure (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "299",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ProfitLoss",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ProfitLossAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R300": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails",
     "longName": "99942508 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Continuing operations (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Continuing operations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "300",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ProfitLossFromContinuingOperations",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ProfitLossFromContinuingOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R301": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
     "longName": "99942509 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Discontinued operations (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Discontinued operations (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "301",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2022_To_12_31_2022_tATvadldx0mVkLp9UJrvwA",
      "name": "ifrs-full:ProfitLossFromDiscontinuedOperations",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2022_To_12_31_2022_tATvadldx0mVkLp9UJrvwA",
      "name": "ifrs-full:ProfitLossFromDiscontinuedOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R302": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails",
     "longName": "99942510 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Additional information (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Earnings per share - Additional information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "302",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfShareCapitalAxis_ifrs-full_PreferenceSharesMember_ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis_dei_AdrMember_QtBbY1K4qE2ocfBpHFv7Vg",
      "name": "ifrs-full:NumberOfSharesRepresentedByOneDepositaryReceipt",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "ifrs-full:NumberOfSharesRepresentedByOneDepositaryReceipt",
       "ifrs-full:NumberOfSharesRepresentedByOneDepositaryReceipt",
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_ClassesOfShareCapitalAxis_ifrs-full_PreferenceSharesMember_ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis_dei_AdrMember_QtBbY1K4qE2ocfBpHFv7Vg",
      "name": "ifrs-full:NumberOfSharesRepresentedByOneDepositaryReceipt",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "ifrs-full:NumberOfSharesRepresentedByOneDepositaryReceipt",
       "ifrs-full:NumberOfSharesRepresentedByOneDepositaryReceipt",
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R303": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
     "longName": "99942511 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Equity transactions - Subsidiary transactions (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Equity transactions - Subsidiary transactions (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "303",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_3_1_2024_To_3_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_CorficolombianaMember_wCxpvIGOAUqb6vFR7ljgAw",
      "name": "aval:DividendsPaidToNoncontrollingInterestsPerShare",
      "unitRef": "Unit_Divide_COP_shares_S-3ONYodoEyi3a8LSW4_sw",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R304": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails",
     "longName": "99942512 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Equity transactions - Acquisitions (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Equity transactions - Acquisitions (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "304",
     "firstAnchor": {
      "contextRef": "Duration_12_16_2024_To_12_16_2024_dAHWl7W5WEOHRbO0klyHxw",
      "name": "aval:MonetaryEffectBetweenControllingAndNonControllingInterests",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_12_16_2024_To_12_16_2024_dAHWl7W5WEOHRbO0klyHxw",
      "name": "aval:MonetaryEffectBetweenControllingAndNonControllingInterests",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R305": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
     "longName": "99942513 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Consolidated other comprehensive income - Components (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Consolidated other comprehensive income - Components (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "305",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_ComponentsOfEquityAxis_aval_AociRelatedToForeignCurrencyTranslationDifferencesFromHedgedForeignOperationMember_GXtq8wxDpkSNa8nOBQ_DBA",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutComponentsOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R306": {
     "role": "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails",
     "longName": "99942514 - Disclosure - EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Consolidated other comprehensive income - Non-controlling interest (Details)",
     "shortName": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT - Consolidated other comprehensive income - Non-controlling interest (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "306",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2023_iLj_56GTK0erHX3pwt6Oqg",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2021_ifrs-full_ComponentsOfEquityAxis_aval_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestsMember_KXcvUOfLLUSmSQ7p5NDdwg",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutComponentsOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R307": {
     "role": "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
     "longName": "99942601 - Disclosure - NON-CONTROLLING INTEREST - Financial information (Details)",
     "shortName": "NON-CONTROLLING INTEREST - Financial information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "307",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:NonControllingInterestShareOfEquity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialInformationOfNoncontrollingInterestTextBlock",
       "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:NonControllingInterestShareOfEquity",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutFinancialInformationOfNoncontrollingInterestTextBlock",
       "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R308": {
     "role": "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
     "longName": "99942602 - Disclosure - NON-CONTROLLING INTEREST - Non-controlling interests (Details)",
     "shortName": "NON-CONTROLLING INTEREST - Non-controlling interests (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "308",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_aval_CorporacionFinancieraColombianaSaMember_D71fMWYGUku7OhXHlFL8yg",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutSubsidiaryThatHasSignificantNonControllingInterestsTextBlock",
       "ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R309": {
     "role": "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesCapitalExpensesCommitmentsDetails",
     "longName": "99942701 - Disclosure - COMMITMENTS AND CONTINGENCIES - Capital expenses commitments (Details)",
     "shortName": "COMMITMENTS AND CONTINGENCIES - Capital expenses commitments (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "309",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R310": {
     "role": "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails",
     "longName": "99942702 - Disclosure - COMMITMENTS AND CONTINGENCIES - Contingencies (Details)",
     "shortName": "COMMITMENTS AND CONTINGENCIES - Contingencies (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "310",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:EstimatedFinancialEffectOfContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:EstimatedFinancialEffectOfContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R311": {
     "role": "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails",
     "longName": "99942801 - Disclosure - NET INCOME FROM CONTRACTS WITH CUSTOMERS - Income and expenses (Details)",
     "shortName": "NET INCOME FROM CONTRACTS WITH CUSTOMERS - Income and expenses (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "311",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:BankingServiceFees",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutCommissionsAndFeesOfContractsTextBlock",
       "ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:BankingServicesExpenses",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R312": {
     "role": "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails",
     "longName": "99942802 - Disclosure - NET INCOME FROM CONTRACTS WITH CUSTOMERS - Income and cost for goods and services (Details)",
     "shortName": "NET INCOME FROM CONTRACTS WITH CUSTOMERS - Income and cost for goods and services (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "312",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:RevenueFromSaleOfGoodsAndRenderingOfServices",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:CostOfSalesExcludingDepreciation",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCostOfSalesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R313": {
     "role": "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
     "longName": "99942901 - Disclosure - NET TRADING INCOME (LOSS) (Details)",
     "shortName": "NET TRADING INCOME (LOSS) (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "313",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:TradingIncomeExpense",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DerivativesMember_ojLBcotisU2Y_xIsrClRVg",
      "name": "ifrs-full:TradingIncomeExpenseOnDerivativeFinancialInstruments",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutNetTradingIncomeTextBlock",
       "ifrs-full:DisclosureOfTradingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R314": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
     "longName": "99943001 - Disclosure - OTHER INCOME AND EXPENSE - Other income (Details)",
     "shortName": "OTHER INCOME AND EXPENSE - Other income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "314",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfOtherIncomeTableTextBlock",
       "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfOtherIncomeTableTextBlock",
       "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R315": {
     "role": "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails",
     "longName": "99943002 - Disclosure - OTHER INCOME AND EXPENSE - Other expense (Details)",
     "shortName": "OTHER INCOME AND EXPENSE - Other expense (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "315",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PersonnelExpenses",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfOtherExpenseTableTextBlock",
       "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:TaxExpenseOtherThanIncomeTaxExpense",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfOtherExpenseTableTextBlock",
       "ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R316": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsGeneralInformationDetails",
     "longName": "99943101 - Disclosure - ANALYSIS OF OPERATING SEGMENTS - General information (Details)",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS - General information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "316",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:IfrsNumberOfOperatingSegments",
      "unitRef": "Unit_Standard_segment_VZOFR9RM2EenrfowIrryIQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfOperatingSegmentsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:IfrsNumberOfOperatingSegments",
      "unitRef": "Unit_Standard_segment_VZOFR9RM2EenrfowIrryIQ",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfOperatingSegmentsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R317": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
     "longName": "99943102 - Disclosure - ANALYSIS OF OPERATING SEGMENTS - Statement of financial position (Details)",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS - Statement of financial position (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "317",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "aval:OtherAssetsTotal",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R318": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
     "longName": "99943103 - Disclosure - ANALYSIS OF OPERATING SEGMENTS - Statement of income (Details)",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS - Statement of income (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "318",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RevenueFromInterest",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:IncomeFromFinancialInstrumentsDesignatedAtFairValueNet",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R319": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
     "longName": "99943104 - Disclosure - ANALYSIS OF OPERATING SEGMENTS - Revenue from contracts with customers (Details)",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS - Revenue from contracts with customers (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "319",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RevenueFromContractsWithCustomers",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RevenueFromContractsWithCustomers",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R320": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
     "longName": "99943105 - Disclosure - ANALYSIS OF OPERATING SEGMENTS - Income by country (Details)",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS - Income by country (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "320",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RevenueFromInterest",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:OtherFinanceIncomeCostIncludingIncomeFromFinancialInstrumentsDesignatedAtFairValueNetAndTradingIncomeExpense",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutRevenuesForEachIndividualCountryForWhichRevenuesAreSignificantTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R321": {
     "role": "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
     "longName": "99943106 - Disclosure - ANALYSIS OF OPERATING SEGMENTS - Non-current assets by country (Details)",
     "shortName": "ANALYSIS OF OPERATING SEGMENTS - Non-current assets by country (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "321",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:PropertyPlantAndEquipmentIncludingRightofuseAssets",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis_ifrs-full_PropertyPlantAndEquipmentNotSubjectToOperatingLeasesMember_TxWxuV9DMEmUZ8FP5klf1Q",
      "name": "ifrs-full:IntangibleAssetsAndGoodwill",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfDetailedInformationAboutNoncurrentAssetsForEachIndividualCountryForWhichRevenuesAreSignificantTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R322": {
     "role": "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails",
     "longName": "99943201 - Disclosure - UNCONSOLIDATED STRUCTURED ENTITIES (Details)",
     "shortName": "UNCONSOLIDATED STRUCTURED ENTITIES (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "322",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfTotalAssetsRepresentingMaximumExposure",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory",
       "ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:PercentageOfTotalAssetsRepresentingMaximumExposure",
      "unitRef": "Unit_Standard_pure_Kp2_CPO9PUWmrqvcduRe8A",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory",
       "ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R323": {
     "role": "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails",
     "longName": "99943301 - Disclosure - TRANSFERS OF FINANCIAL ASSETS (Details)",
     "shortName": "TRANSFERS OF FINANCIAL ASSETS (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "323",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_acCThXmbM0aC7UK0xPfePA",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "aval:DisclosureOfTradingAssetsInDebtSecuritiesPledgedAsCollateralTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2024_ifrs-full_CategoriesOfFinancialAssetsAxis_aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member_ifrs-full_ClassesOfAssetsAxis_ifrs-full_DebtSecuritiesMember_ifrs-full_ClassesOfFinancialInstrumentsAxis_aval_PledgedInMoneyMarketOperationsAndPledgedAsCollateralToSpecialEntitiesSuchAsCrccBrAndBvcMember_Qmm8GZuRdkmO-hdwHXDgVQ",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "ifrs-full:DisclosureOfTransfersOfFinancialAssetsExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R324": {
     "role": "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
     "longName": "99943401 - Disclosure - RELATED PARTIES - General information (Details)",
     "shortName": "RELATED PARTIES - General information (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "324",
     "firstAnchor": {
      "contextRef": "As_Of_12_31_2024_zBuQsMU0RUKEoyStCOx8Vg",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "As_Of_12_31_2023_ifrs-full_TypesOfInterestRatesAxis_aval_IbrRateThreeMMember_ppOYsI7syk2wNtexW2ISrA",
      "name": "aval:IfrsLoansAndLeasesReceivableRelatedParties",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "span",
       "p",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R325": {
     "role": "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails",
     "longName": "99943402 - Disclosure - RELATED PARTIES - Transactions (Details)",
     "shortName": "RELATED PARTIES - Transactions (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "325",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "ifrs-full:RevenueFromInterest",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "b",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_ifrs-full_CategoriesOfRelatedPartiesAxis_aval_IndividualsWithControlOverEntityMember_3Mmp828U9U62wNadogAZxg",
      "name": "ifrs-full:RevenueFromInterest",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    },
    "R326": {
     "role": "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails",
     "longName": "99943403 - Disclosure - RELATED PARTIES - Compensation of key management personnel (Details)",
     "shortName": "RELATED PARTIES - Compensation of key management personnel (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "326",
     "firstAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:Salaries",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_1_1_2024_To_12_31_2024_lgAPZTz0yUKxPMGvvS8CzA",
      "name": "aval:Salaries",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R327": {
     "role": "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails",
     "longName": "99943501 - Disclosure - SUBSEQUENT EVENTS (Details)",
     "shortName": "SUBSEQUENT EVENTS (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "327",
     "firstAnchor": {
      "contextRef": "Duration_3_28_2025_To_3_28_2025_VtZJlg-gHkSDr1009-7p6A",
      "name": "aval:NetIncomeLossAttributableToParent",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod",
       "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "Duration_3_28_2025_To_3_28_2025_VtZJlg-gHkSDr1009-7p6A",
      "name": "aval:OccasionalReserveReleasedForDistribution",
      "unitRef": "Unit_Standard_COP_1UN7kvJLpEiyH2fUzeFYTg",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ifrs-full:ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod",
       "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "aval-20241231x20f.htm",
      "unique": true
     }
    }
   },
   "tag": {
    "ifrs-full_AccountingProfit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AccountingProfit",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting profit",
        "verboseLabel": "Profit before income tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of profit (loss) for a period before deducting tax expense. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r69",
      "r70"
     ]
    },
    "aval_AccountingSensitivityExerciseToVariationsInInterestRates100BasisPointIncreaseNetIncomeBeforeIncomeTaxExpenseIncreaseDecreaseAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccountingSensitivityExerciseToVariationsInInterestRates100BasisPointIncreaseNetIncomeBeforeIncomeTaxExpenseIncreaseDecreaseAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskAccountingSensitivityExerciseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, net income before income tax expense, increase (decrease), amount",
        "label": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, net income before income tax expense, increase (decrease), amount",
        "terseLabel": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, net income before income tax expense, increase (decrease), amount"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AccountingSensitivityExerciseToVariationsInInterestRates100BasisPointIncreaseNetIncomeBeforeIncomeTaxExpenseIncreaseDecreasePercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccountingSensitivityExerciseToVariationsInInterestRates100BasisPointIncreaseNetIncomeBeforeIncomeTaxExpenseIncreaseDecreasePercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskAccountingSensitivityExerciseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, net income before income tax expense, increase (decrease), percentage",
        "label": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, net income before income tax expense, increase (decrease), percentage",
        "terseLabel": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, net income before income tax expense, increase (decrease), percentage (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AccountingSensitivityExerciseToVariationsInInterestRates100BasisPointIncreaseOtherComprehensiveIncomeLossInEquityAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccountingSensitivityExerciseToVariationsInInterestRates100BasisPointIncreaseOtherComprehensiveIncomeLossInEquityAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskAccountingSensitivityExerciseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, other comprehensive income (loss) in equity, amount",
        "label": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, other comprehensive income (loss) in equity, amount",
        "terseLabel": "Accounting sensitivity exercise to variations in interest rates, 100 basis point increase, other comprehensive income (loss) in equity, amount"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AccountingSensitivityExerciseToVariationsInInterestRatesBasisPointIncrease": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccountingSensitivityExerciseToVariationsInInterestRatesBasisPointIncrease",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskAccountingSensitivityExerciseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounting sensitivity exercise to variations in interest rates, basis point increase",
        "label": "Accounting sensitivity exercise to variations in interest rates, basis point increase",
        "terseLabel": "Accounting sensitivity exercise to variations in interest rates, basis point increase (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AccountsReceivablesInNonfinancialSector": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccountsReceivablesInNonfinancialSector",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of accounts receivables for goods and services sales in non-financial sector companies.",
        "label": "Accounts receivables in nonfinancial sector",
        "verboseLabel": "Accounts receivable for goods and services sales in Non-financial sector companies"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AccountsReceivablesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccountsReceivablesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounts receivables [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AccruedInterestFinancialAssetsInConcessionArrangements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccruedInterestFinancialAssetsInConcessionArrangements",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accrued interest, financial assets in concession arrangements",
        "label": "Accrued interest, financial assets in concession arrangements",
        "terseLabel": "Accrued interest"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AccumulatedDepreciationAmortisationAndImpairmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated depreciation, amortisation and impairment [member]",
        "terseLabel": "Accumulated depreciation, amortisation and impairment"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for accumulated depreciation, amortisation and impairment. [Refer: Impairment loss; Depreciation and amortisation expense]"
       }
      }
     },
     "auth_ref": [
      "r79",
      "r84",
      "r165",
      "r185",
      "r189"
     ]
    },
    "ifrs-full_AccumulatedDepreciationAndAmortisationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AccumulatedDepreciationAndAmortisationMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated depreciation and amortisation [member]",
        "terseLabel": "Accumulated Amortisation"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for accumulated depreciation and amortisation. [Refer: Depreciation and amortisation expense]"
       }
      }
     },
     "auth_ref": [
      "r84",
      "r602",
      "r612",
      "r615",
      "r616"
     ]
    },
    "ifrs-full_AccumulatedImpairmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AccumulatedImpairmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated impairment [member]",
        "terseLabel": "Accumulated impairment",
        "verboseLabel": "Impairment loss"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for accumulated impairment. [Refer: Impairment loss]"
       }
      }
     },
     "auth_ref": [
      "r290",
      "r330",
      "r446",
      "r602",
      "r612",
      "r615",
      "r616"
     ]
    },
    "ifrs-full_AccumulatedOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AccumulatedOtherComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_EquityAttributableToOwnersOfParent",
       "weight": 1.0,
       "order": 4.0
      },
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated other comprehensive income",
        "periodEndLabel": "Balance at the end of the year",
        "periodStartLabel": "Balance at the beginning of the year",
        "terseLabel": "Other comprehensive income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of accumulated items of income and expense (including reclassification adjustments) that are not recognised in profit or loss as required or permitted by other IFRSs. [Refer: IFRSs [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accumulated other comprehensive income attributable to noncontrolling interests [member]",
        "label": "Accumulated other comprehensive income attributable to non-controlling interests"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AccumulatedOtherComprehensiveIncomeIncludingNoncontrollingInterestsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AccumulatedOtherComprehensiveIncomeIncludingNoncontrollingInterestsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accumulated other comprehensive income including noncontrolling interests [member]",
        "label": "Accumulated other comprehensive income including non-controlling interests"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AccumulatedOtherComprehensiveIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AccumulatedOtherComprehensiveIncomeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated other comprehensive income [member]",
        "terseLabel": "Accumulated other comprehensive income",
        "verboseLabel": "Other comprehensive income (OCI)"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for accumulated other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r589"
     ]
    },
    "aval_AchColombiaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AchColombiaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A.C.H Colombia S.A. [member]",
        "label": "ACH Colombia SA [member]",
        "terseLabel": "A.C.H Colombia S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_Acquisitions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Acquisitions",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount spent for acquiring interest in associates.",
        "label": "Acquisitions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ActuarialAssumptionOfDiscountRates": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfDiscountRates",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of discount rates",
        "verboseLabel": "Discount interest rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r606"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfDiscountRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfDiscountRatesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of discount rates [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the discount rates used as actuarial assumptions. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r607"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflation": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfInflation",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of inflation",
        "verboseLabel": "Inflation rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The expected rate of inflation that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r606"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreases": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfPensionIncreases",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of pension increases",
        "verboseLabel": "Pension growth rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The expected rate of increases in pension that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r606"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of pension increases [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the expected rates of pension increases used as actuarial assumptions. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r607"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfSalaryIncreases",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of salary increases",
        "verboseLabel": "Salary growth rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r606"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of salary increases [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the expected rates of salary increases used as actuarial assumptions. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r607"
     ]
    },
    "ifrs-full_ActuarialAssumptionsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumptions [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r101"
     ]
    },
    "ifrs-full_ActuarialAssumptionsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialAssumptionsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumptions [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all actuarial assumptions. Actuarial assumptions are the entity\u2019s unbiased and mutually compatible best estimates of the demographic and financial variables that will determine the ultimate cost of providing post-employment benefits. It also represents the standard value for the 'Actuarial assumptions' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r101"
     ]
    },
    "ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails": {
       "parentTag": "ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions",
        "verboseLabel": "Actuarial Loss (Gain) arising from changes in demographic assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions that result in remeasurements of the net defined benefit liability (asset). Demographic assumptions deal with matters such as: (a) mortality; (b) rates of employee turnover, disability and early retirement; (c) the proportion of plan members with dependants who will be eligible for benefits; (d) the proportion of plan members who will select each form of payment option available under the plan terms; and (e) claim rates under medical plans. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r93"
     ]
    },
    "ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails": {
       "parentTag": "ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions",
        "verboseLabel": "Actuarial Loss (Gain) arising from changes in financial assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r94"
     ]
    },
    "ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails": {
       "parentTag": "ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from experience adjustments",
        "terseLabel": "Actuarial Loss arising from changes in the experience"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from experience adjustments that result in remeasurements of the net defined benefit liability (asset). Experience adjustments deal with the effects of differences between the previous actuarial assumptions and what has actually occurred. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r605"
     ]
    },
    "aval_ActuarialGainsLossesFromDefinedBenefitPensionPlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ActuarialGainsLossesFromDefinedBenefitPensionPlanMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Actuarial Gains Losses From Defined Benefit Pension Plan"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdaptationAndInstallationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdaptationAndInstallationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to adaptation and installation.",
        "label": "Adaptation and installation expense",
        "negatedLabel": "Adaptation and installation"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_Additional402vDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "Additional402vDisclosureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional 402(v) Disclosure [Text Block]",
        "terseLabel": "Additional 402(v) Disclosure"
       }
      }
     },
     "auth_ref": [
      "r524"
     ]
    },
    "ifrs-full_AdditionalPaidinCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdditionalPaidinCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_EquityAttributableToOwnersOfParent",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional paid-in capital",
        "terseLabel": "Additional paid-in capital"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount received or receivable from the issuance of the entity's shares in excess of nominal value and amounts received from other transactions involving the entity's stock or stockholders."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_AdditionalPaidinCapitalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdditionalPaidinCapitalMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional paid-in capital [member]",
        "terseLabel": "Additional paid - in capital"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for amounts received from issuance of the entity's shares in excess of nominal value and amounts received from other transactions involving the entity's stock or stockholders."
       }
      }
     },
     "auth_ref": [
      "r589"
     ]
    },
    "ifrs-full_AdditionalProvisionsOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdditionalProvisionsOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional provisions, other provisions",
        "terseLabel": "Provisions made during the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additional other provisions made. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r157"
     ]
    },
    "aval_AdditionalTier1Percentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdditionalTier1Percentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Additional Tier 1",
        "label": "Additional Tier 1 Percentage",
        "terseLabel": "AT1 capital solvency ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdditionalTierOneCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdditionalTierOneCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TierOnePrimaryCapital",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of Additional Tier One Capital",
        "label": "Additional Tier One Capital",
        "totalLabel": "AT1"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions other than through business combinations, intangible assets other than goodwill",
        "terseLabel": "Capitalizations / Acquisitions / Purchases",
        "verboseLabel": "Additions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r166"
     ]
    },
    "aval_AdditionsOtherThanThroughBusinessCombinationsTangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdditionsOtherThanThroughBusinessCombinationsTangibleAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of additions to tangible assets, other than those acquired through business combinations.",
        "label": "Additions other than through business combinations, tangible assets",
        "terseLabel": "Purchases or capitalized expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdditionsOtherThanThroughBusinessCombinationsTangibleAssetsTransferredFromConcessionArrangements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdditionsOtherThanThroughBusinessCombinationsTangibleAssetsTransferredFromConcessionArrangements",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Additions other than through business combinations, tangible assets, transferred from concession arrangements",
        "label": "Additions other than through business combinations, tangible assets, transferred from concession arrangements",
        "terseLabel": "Additions other than through business combinations, tangible assets, transferred from concession arrangements"
       }
      }
     },
     "auth_ref": []
    },
    "dei_AddressTypeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "AddressTypeDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Address Type [Domain]",
        "documentation": "An entity may have several addresses for different purposes and this domain represents all such types."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AdjToCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AdjToCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Compensation Amount",
        "terseLabel": "Adjustment to Compensation, Amount"
       }
      }
     },
     "auth_ref": [
      "r537"
     ]
    },
    "ecd_AdjToCompAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AdjToCompAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Compensation [Axis]",
        "terseLabel": "Adjustment to Compensation:"
       }
      }
     },
     "auth_ref": [
      "r537"
     ]
    },
    "ecd_AdjToNonPeoNeoCompFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AdjToNonPeoNeoCompFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Non-PEO NEO Compensation Footnote [Text Block]",
        "terseLabel": "Adjustment to Non-PEO NEO Compensation Footnote"
       }
      }
     },
     "auth_ref": [
      "r537"
     ]
    },
    "ecd_AdjToPeoCompFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AdjToPeoCompFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment To PEO Compensation, Footnote [Text Block]",
        "terseLabel": "Adjustment To PEO Compensation, Footnote"
       }
      }
     },
     "auth_ref": [
      "r537"
     ]
    },
    "aval_AdjustedDiscountedCashFlowDiscountInterestRatesOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustedDiscountedCashFlowDiscountInterestRatesOneMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjusted discounted cash flow, discount interest rates, one [member]",
        "label": "Adjusted discounted cash flow, discount interest rates, one [member]",
        "terseLabel": "Adjusted discounted cash flow, discount interest rates, one"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdjustedDiscountedCashFlowDiscountInterestRatesTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustedDiscountedCashFlowDiscountInterestRatesTwoMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjusted discounted cash flow, discount interest rates, two [member]",
        "label": "Adjusted discounted cash flow, discount interest rates, two [member]",
        "terseLabel": "Adjusted discounted cash flow, discount interest rates, two"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdjustmentDueToSettlementOfUncertainTaxPositionsFormPriorPeriods": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentDueToSettlementOfUncertainTaxPositionsFormPriorPeriods",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustment due to settlement of uncertain tax positions form prior periods",
        "label": "Adjustment due to settlement of uncertain tax positions form prior periods",
        "terseLabel": "Adjustment due to settlement of uncertain tax positions form prior years",
        "verboseLabel": "Adjustments due to uncertain tax positions in previous year"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForAmortisationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForAmortisationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for amortisation expense",
        "verboseLabel": "Amortization of intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for amortisation expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss); Depreciation and amortisation expense]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "ifrs-full_AdjustmentsForCurrentTaxOfPriorPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForCurrentTaxOfPriorPeriod",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for current tax of prior periods",
        "verboseLabel": "Prior years adjustments"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments of tax expense (income) recognised in the period for current tax of prior periods."
       }
      }
     },
     "auth_ref": [
      "r394"
     ]
    },
    "ifrs-full_AdjustmentsForDecreaseIncreaseInDerivativeFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForDecreaseIncreaseInDerivativeFinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for decrease (increase) in derivative financial assets",
        "terseLabel": "Trading assets"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for decrease (increase) in derivative financial assets to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Derivative financial assets; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "aval_AdjustmentsForDecreaseIncreaseInDerivativeFinancialInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForDecreaseIncreaseInDerivativeFinancialInstruments",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for decrease (increase) in derivative financial instruments to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments for Decrease (Increase) in Derivative Financial Instruments",
        "terseLabel": "Derivatives"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdjustmentsForDecreaseIncreaseInLoansAndReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForDecreaseIncreaseInLoansAndReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 31.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for decrease (increase) in loans and receivables to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments for decrease (increase) in loans and receivables",
        "terseLabel": "Loans"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForDecreaseIncreaseInOtherAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for decrease (increase) in other assets",
        "verboseLabel": "Other assets"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for decrease (increase) in other assets to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Other assets; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForDecreaseIncreaseInTradeAccountReceivable",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for decrease (increase) in trade accounts receivable",
        "verboseLabel": "Other accounts receivable"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for decrease (increase) in trade accounts receivable to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r620"
     ]
    },
    "ifrs-full_AdjustmentsForDeferredTaxOfPriorPeriods": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForDeferredTaxOfPriorPeriods",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "aval_DeferredTaxExpenseIncomeAndAdjustmentsForDeferredTaxOfPriorPeriods",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for deferred tax of prior periods",
        "terseLabel": "Deferred taxes - Prior years adjustments"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments of tax expense (income) recognised in the period for the deferred tax of prior periods."
       }
      }
     },
     "auth_ref": [
      "r599"
     ]
    },
    "ifrs-full_AdjustmentsForDepreciationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForDepreciationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for depreciation expense",
        "verboseLabel": "Depreciation of tangible assets and right-of-use assets"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for depreciation expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "ifrs-full_AdjustmentsForDividendIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForDividendIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 28.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for dividend income",
        "negatedLabel": "Accrued dividends"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for dividend income to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Dividend income; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "aval_AdjustmentsForEquityTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForEquityTransactions",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of adjustments for equity transactions.",
        "label": "Adjustments For Equity Transactions",
        "terseLabel": "Equity transaction"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdjustmentsForGainLossOnDisposalOfBiologicalAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForGainLossOnDisposalOfBiologicalAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 29.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for gains (losses) on disposal of biological assets to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments For Gain Loss On Disposal Of Biological Assets",
        "negatedLabel": "Gain on biological assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for gain (loss) on disposals, property, plant and equipment",
        "negatedLabel": "Gain on sale of property plant and equipment for own-use"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for gain (loss) on disposals of property, plant and equipment to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss); Property, plant and equipment; Disposals, property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "aval_AdjustmentsForGainLossOnFairValueAdjustmentFinancialAssetsAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForGainLossOnFairValueAdjustmentFinancialAssetsAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for gains (losses) arising from a change in the fair value of financial assets measured at fair value through profit or loss to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments for gain loss on fair value adjustment, Financial assets at fair value through profit or loss",
        "negatedLabel": "Non-current assets held for sale"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for gains (losses) on change in fair value of derivatives",
        "negatedLabel": "Derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for gains (losses) on changes in the fair value of derivatives to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: At fair value [member]; Derivatives [member]; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "aval_AdjustmentsForGainsLossesOnDisposalsOfInvestmentProperties": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForGainsLossesOnDisposalsOfInvestmentProperties",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 30.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for gains (losses) on disposal of investment properties to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments For Gains (Losses) On Disposals Of Investment Properties",
        "negatedLabel": "Loss on sale of investment property"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdjustmentsForGainsLossesOnFairValueAdjustmentBiologicalAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForGainsLossesOnFairValueAdjustmentBiologicalAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 26.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for gains (losses) arising from a change in the fair value of biological assets to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments For Gains Losses On Fair Value Adjustment Biological Assets",
        "negatedLabel": "Biological assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 25.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for gains (losses) on fair value adjustment, investment property",
        "negatedLabel": "Investment properties"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for gains (losses) arising from a change in the fair value of investment property to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Investment property; Gains (losses) on fair value adjustment, investment property; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss",
        "verboseLabel": "Impairment losses on loans and other accounts receivable"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Impairment loss (reversal of impairment loss) recognised in profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r621"
     ]
    },
    "aval_AdjustmentsForIncreaseDecreaseInBorrowingsFromBanksAndOthers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForIncreaseDecreaseInBorrowingsFromBanksAndOthers",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 21.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in borrowings from banks and others to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments for increase decrease in borrowings from banks and others",
        "verboseLabel": "Borrowings from banks and others"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForIncreaseDecreaseInDepositsFromBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForIncreaseDecreaseInDepositsFromBanks",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for increase (decrease) in deposits from banks",
        "verboseLabel": "Interbank borrowings and overnight funds"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in deposits from banks to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Deposits from banks; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "ifrs-full_AdjustmentsForIncreaseDecreaseInDepositsFromCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForIncreaseDecreaseInDepositsFromCustomers",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for increase (decrease) in deposits from customers",
        "verboseLabel": "Customer deposits"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in deposits from customers to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Deposits from customers; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "aval_AdjustmentsForIncreaseDecreaseInEmployeeBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForIncreaseDecreaseInEmployeeBenefits",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in employee benefits to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments for increase decrease in employee benefits",
        "verboseLabel": "Employee benefits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdjustmentsForIncreaseDecreaseInOtherLiabilitiesAndProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForIncreaseDecreaseInOtherLiabilitiesAndProvisions",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in other liabilities and provisions to reconcile profit (loss) to net cash flow from (used in) operating activities.",
        "label": "Adjustments for increase decrease in other liabilities and provisions",
        "verboseLabel": "Other liabilities and provisions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForInterestExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForInterestExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for interest expense",
        "terseLabel": "Accrued interest"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for interest expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Interest expense; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for losses (gains) on disposal of non-current assets",
        "verboseLabel": "Net gains on sales of non-current assets held for sale"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for losses (gains) on disposal of non-current assets to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Non-current assets; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r617"
     ]
    },
    "ifrs-full_AdjustmentsForReconcileProfitLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForReconcileProfitLossAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments to reconcile profit (loss) [abstract]",
        "terseLabel": "Reconciliation of net income before taxes and net cash provided by operating activities:",
        "verboseLabel": "Reconciliation of net income before taxes and net cash (used) provided by operating activities:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for undistributed profits of investments accounted for using equity method",
        "negatedLabel": "Profit of equity accounted on investments in associates and joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for undistributed profits of investments accounted for using the equity method to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Investments accounted for using equity method; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsForUnrealisedForeignExchangeLossesGains",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for unrealised foreign exchange losses (gains)",
        "verboseLabel": "Foreign exchange losses (gains)"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for unrealised foreign exchange losses (gains) to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r417",
      "r621"
     ]
    },
    "aval_AdjustmentsForValidationAndInterestFromConcessionAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdjustmentsForValidationAndInterestFromConcessionAgreements",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 27.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustment for validation and interest from concession agreement.",
        "label": "Adjustments For Validation And Interest From Concession Agreements",
        "terseLabel": "Valuations and interest from concession agreements"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsToReconcileProfitLossToNumeratorUsedInCalculatingEarningsPerShareAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdjustmentsToReconcileProfitLossToNumeratorUsedInCalculatingEarningsPerShareAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments to reconcile profit (loss) to numerator used in calculating earnings per share [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdlDigitalLabSasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdlDigitalLabSasMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to ADL Digital Lab SAS.",
        "label": "ADL Digital Lab SAS [member]",
        "terseLabel": "ADL Digital Lab S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_AdministrativeAndOtherProceedingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdministrativeAndOtherProceedingsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Administrative and other proceedings"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdministrativeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AdministrativeExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Administrative expenses",
        "negatedLabel": "Administrative expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expenses that the entity classifies as being administrative."
       }
      }
     },
     "auth_ref": [
      "r63",
      "r122",
      "r387"
     ]
    },
    "aval_AdministrativeProceedingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdministrativeProceedingsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Administrative proceedings"
       }
      }
     },
     "auth_ref": []
    },
    "dei_AdrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "AdrMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "ADR [Member]",
        "documentation": "American Depositary Receipt (or American Depositary Share, ADS)."
       }
      }
     },
     "auth_ref": [
      "r477"
     ]
    },
    "aval_AdvertisingExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AdvertisingExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to advertising services.",
        "label": "Advertising expenses",
        "negatedLabel": "Marketing"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AerocaliSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AerocaliSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aerocali S.A. [member]",
        "label": "Aerocali SA [member]",
        "terseLabel": "Aerocali S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_AffiliationContributionsAndTransfers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AffiliationContributionsAndTransfers",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to affiliation contributions and transfers.",
        "label": "Affiliation contributions and transfers",
        "negatedLabel": "Affiliation contributions and transfers"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AfricanOilPalmMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AfricanOilPalmMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "African oil palm [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AggtChngPnsnValInSummryCompstnTblForAplblYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]",
        "terseLabel": "Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r582"
     ]
    },
    "ecd_AggtErrCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AggtErrCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Erroneous Compensation Amount",
        "terseLabel": "Aggregate Erroneous Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r495",
      "r506",
      "r516",
      "r549"
     ]
    },
    "ecd_AggtErrCompNotYetDeterminedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AggtErrCompNotYetDeterminedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Erroneous Compensation Not Yet Determined [Text Block]",
        "terseLabel": "Aggregate Erroneous Compensation Not Yet Determined"
       }
      }
     },
     "auth_ref": [
      "r498",
      "r509",
      "r519",
      "r552"
     ]
    },
    "ecd_AggtPnsnAdjsSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AggtPnsnAdjsSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Pension Adjustments Service Cost [Member]",
        "terseLabel": "Aggregate Pension Adjustments Service Cost"
       }
      }
     },
     "auth_ref": [
      "r583"
     ]
    },
    "aval_AgribusinessMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AgribusinessMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Agribusiness [member]",
        "label": "Agribusiness [member]",
        "terseLabel": "Agribusiness"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AgriculturalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AgriculturalMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Agricultural"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AgricultureAndLivestockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AgricultureAndLivestockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Agriculture and livestock [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AllAdjToCompMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AllAdjToCompMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Adjustments to Compensation [Member]",
        "terseLabel": "All Adjustments to Compensation"
       }
      }
     },
     "auth_ref": [
      "r537"
     ]
    },
    "aval_AllCountriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AllCountriesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "All countries [member]",
        "label": "All countries [member]",
        "terseLabel": "Countries"
       }
      }
     },
     "auth_ref": []
    },
    "currency_AllCurrenciesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2024",
     "localname": "AllCurrenciesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Currencies [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AllExecutiveCategoriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AllExecutiveCategoriesMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Executive Categories [Member]",
        "terseLabel": "All Executive Categories"
       }
      }
     },
     "auth_ref": [
      "r544"
     ]
    },
    "ecd_AllIndividualsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AllIndividualsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure",
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure",
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements",
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Individuals [Member]",
        "terseLabel": "All Individuals"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r544",
      "r553",
      "r557",
      "r565"
     ]
    },
    "ecd_AllTradingArrangementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AllTradingArrangementsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Trading Arrangements [Member]",
        "terseLabel": "All Trading Arrangements"
       }
      }
     },
     "auth_ref": [
      "r563"
     ]
    },
    "aval_AllowanceForAccountsReceivableMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AllowanceForAccountsReceivableMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Allowance for accounts receivable [member]",
        "label": "Allowance for accounts receivable [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AllowanceForForeclosedAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AllowanceForForeclosedAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Allowance for foreclosed assets.",
        "label": "Allowance for foreclosed assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AllowanceForImpairmentOfLoansAndReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AllowanceForImpairmentOfLoansAndReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of allowance for impairment of loans and receivables.",
        "label": "Allowance For Impairment Of Loans And Receivables",
        "negatedLabel": "Allowance for impairment of loans and receivables"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AllowanceForImpairmentOnLoansAndReceivablesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AllowanceForImpairmentOnLoansAndReceivablesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Allowance for impairment on loans and receivables [member]",
        "label": "Allowance for impairment on loans and receivables [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AllowanceOfInvestmentsSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AllowanceOfInvestmentsSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Allowance of investments securities [member]",
        "label": "Allowance of investments securities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AlmavivaSaAndItsSubsidiaryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AlmavivaSaAndItsSubsidiaryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Almaviva S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_AlpopularSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AlpopularSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Alpopular S.A."
       }
      }
     },
     "auth_ref": []
    },
    "dei_AmendmentFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "AmendmentFlag",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amendment Flag",
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AmortisationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AmortisationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortisation expense",
        "negatedLabel": "Amortization of intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of amortisation expense. Amortisation is the systematic allocation of depreciable amounts of intangible assets over their useful lives."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_AmortisationIntangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AmortisationIntangibleAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortisation, intangible assets",
        "label": "Amortisation, intangible assets",
        "negatedLabel": "Amortization of intangible assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AmortisationIntangibleAssetsOtherThanGoodwill",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortisation, intangible assets other than goodwill",
        "negatedLabel": "Amortization of the year",
        "negatedTerseLabel": "Amortization"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r168"
     ]
    },
    "aval_AmountReclassifiedToDiscontinuedOperationsAsShareOfProfitOfEquityAccountedInvesteesNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AmountReclassifiedToDiscontinuedOperationsAsShareOfProfitOfEquityAccountedInvesteesNetOfTax",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount Reclassified to Discontinued Operations as Share of Profit of Equity Accounted Investees Net of Tax",
        "label": "Amount Reclassified to Discontinued Operations as Share of Profit of Equity Accounted Investees, Net of Tax",
        "terseLabel": "Amount reclassified to discontinued operations as a Share of profit of equity accounted investees, net of tax"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesAmountsReclassifiedToProfitOrLossFromOciBeforeTaxesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesAmountsReclassifiedToProfitOrLossFromOciBeforeTaxesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount reclassified to profit or loss from other comprehensive income before tax.",
        "label": "Amount Reclassified To Profit Or Loss From Other Comprehensive Income Before Tax",
        "totalLabel": "Total reclassified to profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AnalysisOfChangesInFinancingLiabilitiesBalance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AnalysisOfChangesInFinancingLiabilitiesBalance",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of liabilities representing analysis of changes in financing",
        "label": "Analysis Of Changes In Financing, Liabilities Balance",
        "periodEndLabel": "Balance at end of period",
        "periodStartLabel": "Balance at beginning of period"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AnticipatedIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AnticipatedIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Anticipated income",
        "label": "Anticipated income",
        "terseLabel": "Anticipated income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AociRelatedToCashFlowHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AociRelatedToCashFlowHedgesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AOCI related to cash flow hedges"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AociRelatedToDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AociRelatedToDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AOCI related to debt securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AociRelatedToEquitySecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AociRelatedToEquitySecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AOCI related to equity securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AociRelatedToForeignCurrencyTranslationDifferencesFromHedgedForeignOperationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AociRelatedToForeignCurrencyTranslationDifferencesFromHedgedForeignOperationMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "AOCI Related To Foreign Currency Translation Differences From hedged Foreign Operation.",
        "label": "AOCI related to foreign currency translation differences from hedged foreign operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AociRelatedToForeignCurrencyTranslationDifferencesFromUnhedgedForeignOperationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AociRelatedToForeignCurrencyTranslationDifferencesFromUnhedgedForeignOperationMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "AOCI Related To Foreign Currency Translation Differences From Unhedged Foreign Operation",
        "label": "AOCI related to foreign currency translation differences from unhedged foreign operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AociRelatedToRevaluationInvestmentPropertiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AociRelatedToRevaluationInvestmentPropertiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "AOCI related to revaluation investment properties member.",
        "label": "AOCI related to revaluation investment properties"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AportesEnLineaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AportesEnLineaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aportes en Linea S.A. [member]",
        "label": "Aportes en Linea SA [member]",
        "terseLabel": "Aportes en Linea S.A."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ApplicableTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ApplicableTaxRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Applicable tax rate",
        "terseLabel": "Applicable tax rate (as a percent)",
        "verboseLabel": "Enacted tax rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The applicable income tax rate."
       }
      }
     },
     "auth_ref": [
      "r70"
     ]
    },
    "aval_ApprovedCreditsNotDisbursedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ApprovedCreditsNotDisbursedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Approved credits not disbursed.",
        "label": "Approved Credits Not Disbursed [Member]",
        "terseLabel": "Approved credits not disbursed"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ArtisticEntertainmentAndRecreationActivitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ArtisticEntertainmentAndRecreationActivitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Artistic, entertainment and recreation activities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetbackedDebtInstrumentsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetbackedDebtInstrumentsHeld",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_FinancialAssetsLoansGrossCarryingAmount",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset-backed debt instruments held",
        "verboseLabel": "Mortgages"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of debt instruments held, including instruments called debt securities, that are backed by underlying assets. [Refer: Debt instruments held]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_Assets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Assets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "definitionGuidance": "Total Assets",
        "label": "Assets",
        "periodEndLabel": "Assets at the end of the period",
        "periodStartLabel": "Assets at the beginning of the period",
        "terseLabel": "Assets",
        "totalLabel": "Total assets",
        "verboseLabel": "Total assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits."
       }
      }
     },
     "auth_ref": [
      "r27",
      "r241",
      "r242",
      "r248",
      "r364",
      "r368"
     ]
    },
    "ifrs-full_AssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets [abstract]",
        "terseLabel": "Assets",
        "verboseLabel": "Assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsAndLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetsAndLiabilitiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r9",
      "r383"
     ]
    },
    "ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities classified as held for sale [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r298"
     ]
    },
    "ifrs-full_AssetsAndLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetsAndLiabilitiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for assets and liabilities. It also represents the standard value for the 'Assets and liabilities' axis if no other member is used. [Refer: Assets; Liabilities]"
       }
      }
     },
     "auth_ref": [
      "r9",
      "r383"
     ]
    },
    "ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities not classified as held for sale [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for assets and liabilities that are not classified as held for sale. It also represents the standard value for the 'Assets and liabilities classified as held for sale' axis if no other member is used. [Refer: Non-current assets held for sale [member]; Liabilities included in disposal groups classified as held for sale; Disposal groups classified as held for sale [member]]"
       }
      }
     },
     "auth_ref": [
      "r298"
     ]
    },
    "aval_AssetsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AssetsHeldForSale",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The value of assets held for sale.",
        "label": "Assets held for sale"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsOfBenefitPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetsOfBenefitPlan",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails": {
       "parentTag": "ifrs-full_RecognisedLiabilitiesDefinedBenefitPlan",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets of benefit plan",
        "negatedLabel": "Plan Asset"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets held by retirement benefit plans. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r120"
     ]
    },
    "aval_AssetsReceivedFromLeasingAgreementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AssetsReceivedFromLeasingAgreementsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets received from leasing agreements [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AssetsReceivedInTotalOrPartialSettlementOfPaymentObligationsOfDebtors": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AssetsReceivedInTotalOrPartialSettlementOfPaymentObligationsOfDebtors",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Assets received in total or partial settlement of the payment obligations of debtors.",
        "label": "Assets received in total or partial settlement of payment obligations of debtors"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AssetsReceivedInTotalOrPartialSettlementOfPaymentObligationsOfDebtorsInOtherMovements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AssetsReceivedInTotalOrPartialSettlementOfPaymentObligationsOfDebtorsInOtherMovements",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Assets received in total or partial settlement of the payment obligations of debtors in other movements.",
        "label": "Assets Received In Total Or Partial Settlement Of Payment Obligations Of Debtors in Other Movements",
        "terseLabel": "Assets received in total or partial settlement of payment obligations of debtors in other movements"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsRecognisedInEntitysFinancialStatementsInRelationToStructuredEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssetsRecognisedInEntitysFinancialStatementsInRelationToStructuredEntities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets recognised in entity's financial statements in relation to structured entities",
        "terseLabel": "Total assets in relation to the Grupo Aval's interests in the unconsolidated structured entities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets recognised in the entity's financial statements relating to its interests in structured entities. [Refer: Assets; Total for all unconsolidated structured entities [member]]"
       }
      }
     },
     "auth_ref": [
      "r222"
     ]
    },
    "ifrs-full_AssociatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AssociatesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total for all associates [member]",
        "terseLabel": "Associates"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the entities over which the investor has significant influence."
       }
      }
     },
     "auth_ref": [
      "r116",
      "r127",
      "r130",
      "r238"
     ]
    },
    "ifrs-full_AtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AtFairValueMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "At fair value [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for measurement based on fair value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date."
       }
      }
     },
     "auth_ref": [
      "r179",
      "r188",
      "r221",
      "r241"
     ]
    },
    "dei_AuditorFirmId": {
     "xbrltype": "nonemptySequenceNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "AuditorFirmId",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Firm ID",
        "documentation": "PCAOB issued Audit Firm Identifier"
       }
      }
     },
     "auth_ref": [
      "r478",
      "r479",
      "r502"
     ]
    },
    "dei_AuditorLocation": {
     "xbrltype": "internationalNameItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "AuditorLocation",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Location"
       }
      }
     },
     "auth_ref": [
      "r478",
      "r479",
      "r502"
     ]
    },
    "dei_AuditorName": {
     "xbrltype": "internationalNameItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "AuditorName",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Name"
       }
      }
     },
     "auth_ref": [
      "r478",
      "r479",
      "r502"
     ]
    },
    "ifrs-full_AuditorsRemunerationForOtherServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AuditorsRemunerationForOtherServices",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor's remuneration for other services",
        "negatedLabel": "Consultancy, audit and other fees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of fees paid or payable to the entity's auditors for services that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_AutomobileAndVehicleLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AutomobileAndVehicleLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Automobile and vehicle loans [member]",
        "terseLabel": "Automobile and vehicle loans"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AvVillasSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AvVillasSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "N/A",
        "label": "Banco AV Villas S A"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AvalCasaDeBolsaS.aMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AvalCasaDeBolsaS.aMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Aval Casa de Bolsa S.A",
        "label": "Aval Casa de Bolsa S.A [Member]",
        "terseLabel": "Aval Casa de Bolsa S.A"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AvalFiduciariaS.aMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AvalFiduciariaS.aMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Aval Fiduciaria S.A",
        "label": "Aval Fiduciaria S.A [Member]",
        "terseLabel": "Aval Fiduciaria S.A"
       }
      }
     },
     "auth_ref": []
    },
    "aval_AvalValorCompartidoS.aMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "AvalValorCompartidoS.aMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Aval Valor Compartido S.A.",
        "label": "Aval Valor Compartido S.A [Member]",
        "terseLabel": "Aval Valor Compartido S.A"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AverageEffectiveTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AverageEffectiveTaxRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Average effective tax rate",
        "verboseLabel": "Effective income tax rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The tax expense (income) divided by the accounting profit. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r70"
     ]
    },
    "ifrs-full_AverageRateOfHedgingInstrument": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "AverageRateOfHedgingInstrument",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Average rate of hedging instrument",
        "terseLabel": "% hedged"
       }
      },
      "en": {
       "role": {
        "documentation": "The average rate of a hedging instrument. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r311"
     ]
    },
    "ecd_AwardExrcPrice": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardExrcPrice",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Exercise Price",
        "terseLabel": "Exercise Price"
       }
      }
     },
     "auth_ref": [
      "r560"
     ]
    },
    "ecd_AwardGrantDateFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardGrantDateFairValue",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Grant Date Fair Value",
        "terseLabel": "Fair Value as of Grant Date"
       }
      }
     },
     "auth_ref": [
      "r561"
     ]
    },
    "ecd_AwardTmgDiscLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardTmgDiscLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Disclosures [Line Items]",
        "terseLabel": "Award Timing Disclosures"
       }
      }
     },
     "auth_ref": [
      "r556"
     ]
    },
    "ecd_AwardTmgHowMnpiCnsdrdTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardTmgHowMnpiCnsdrdTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing, How MNPI Considered [Text Block]",
        "terseLabel": "Award Timing, How MNPI Considered"
       }
      }
     },
     "auth_ref": [
      "r556"
     ]
    },
    "ecd_AwardTmgMethodTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardTmgMethodTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Method [Text Block]",
        "terseLabel": "Award Timing Method"
       }
      }
     },
     "auth_ref": [
      "r556"
     ]
    },
    "ecd_AwardTmgMnpiCnsdrdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardTmgMnpiCnsdrdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing MNPI Considered [Flag]",
        "terseLabel": "Award Timing MNPI Considered"
       }
      }
     },
     "auth_ref": [
      "r556"
     ]
    },
    "ecd_AwardTmgMnpiDiscTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardTmgMnpiDiscTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing MNPI Disclosure [Text Block]",
        "terseLabel": "Award Timing MNPI Disclosure"
       }
      }
     },
     "auth_ref": [
      "r556"
     ]
    },
    "ecd_AwardTmgPredtrmndFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardTmgPredtrmndFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Predetermined [Flag]",
        "terseLabel": "Award Timing Predetermined"
       }
      }
     },
     "auth_ref": [
      "r556"
     ]
    },
    "us-gaap_AwardTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2024",
     "localname": "AwardTypeAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Type [Axis]",
        "terseLabel": "Award Type"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AwardUndrlygSecuritiesAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardUndrlygSecuritiesAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Underlying Securities Amount",
        "terseLabel": "Underlying Securities"
       }
      }
     },
     "auth_ref": [
      "r559"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardsCloseToMnpiDiscIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r558"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardsCloseToMnpiDiscTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures [Table]",
        "terseLabel": "Awards Close in Time to MNPI Disclosures"
       }
      }
     },
     "auth_ref": [
      "r557"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "AwardsCloseToMnpiDiscTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures [Table Text Block]",
        "terseLabel": "Awards Close in Time to MNPI Disclosures, Table"
       }
      }
     },
     "auth_ref": [
      "r557"
     ]
    },
    "country_BB": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "BB",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "BARBADOS"
       }
      }
     },
     "auth_ref": []
    },
    "country_BR": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "BR",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "BRAZIL"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BacHoldingInternationalCorpMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BacHoldingInternationalCorpMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "BAC Holding International Corp"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BalancesOnCurrentAccountsFromCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BalancesOnCurrentAccountsFromCustomers",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails": {
       "parentTag": "aval_TotalDemandDeposits",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_DepositsFromCustomers",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balances on current accounts from customers",
        "verboseLabel": "Checking accounts"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of balances in customers' current accounts held by the entity."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_BalancesOnDemandDepositsFromCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BalancesOnDemandDepositsFromCustomers",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_DepositsFromCustomers",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails": {
       "parentTag": "aval_TotalDemandDeposits",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balances on demand deposits from customers",
        "verboseLabel": "Savings accounts"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of balances in customers' demand deposits held by the entity."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_BalancesOnOtherDepositsFromCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BalancesOnOtherDepositsFromCustomers",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails": {
       "parentTag": "aval_TotalDemandDeposits",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_DepositsFromCustomers",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balances on other deposits from customers",
        "terseLabel": "Other funds on demand",
        "verboseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of balances in customers' deposit accounts held by the entity that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_BalancesOnTermDepositsFromCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BalancesOnTermDepositsFromCustomers",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails": {
       "parentTag": "ifrs-full_DepositsFromCustomers",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_DepositsFromCustomers",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balances on term deposits from customers",
        "terseLabel": "Fixed term deposit certificates",
        "verboseLabel": "Time deposits"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of balances in customers' term deposits held by the entity."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_BalancesWithBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BalancesWithBanks",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balances with banks",
        "terseLabel": "Demand deposits in banks and other financial entities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash balances held at banks."
       }
      }
     },
     "auth_ref": [
      "r623"
     ]
    },
    "aval_BancoAvVillasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoAvVillasMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banco AV villas.",
        "label": "Banco AV Villas"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoCommercialAvVillasSMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoCommercialAvVillasSMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banco Commercial Av Villas S A [member]",
        "label": "Banco Comercial AV Villas S.A.",
        "verboseLabel": "Banco AV Villas S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeBogotaPanamaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeBogotaPanamaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banco de Bogota Panama S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeBogotaS.a.OverMultiFinancialGroupIncMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeBogotaS.a.OverMultiFinancialGroupIncMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banco de Bogota S.A. over Multi Financial Group Inc. [member]",
        "label": "Banco de Bogota S.A. over Multi Financial Group Inc."
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeBogotaSaAndMultiFinancialGroupIncMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeBogotaSaAndMultiFinancialGroupIncMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banco de Bogota S.A. and Multi Financial Group Inc. [member]",
        "label": "Banco de Bogota SA and Multi Financial Group Inc [member]",
        "terseLabel": "Banco de Bogota S.A. and MFH"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeBogotaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeBogotaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banco de Bogota S.A.",
        "terseLabel": "Banco de Bogota S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeBogotaSaUnderRule144aMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeBogotaSaUnderRule144aMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banco De Bogota S.A. under Rule 144A [member]",
        "label": "Banco De Bogota SA under Rule 144A [member]",
        "terseLabel": "Banco de Bogota S.A. Under rule 144A"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeComercioExteriorBancoldexMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeComercioExteriorBancoldexMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banco de Comercio Exterior - BANCOLDEX [member]",
        "label": "Banco de Comercio Exterior - BANCOLDEX [member]",
        "terseLabel": "Banco de Comercio Exterior - \"BANCOLDEX\""
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeCreditoYDesarrolloSocialMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeCreditoYDesarrolloSocialMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banco de Credito y Desarrollo Social [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeOccidentePanamaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeOccidentePanamaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banco de Occidente Panama. S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeOccidenteS.a.OverBancoUnionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeOccidenteS.a.OverBancoUnionMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banco de Occidente S.A. over Banco Union [member]",
        "label": "Banco de Occidente S.A. over Banco Union"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoDeOccidenteSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoDeOccidenteSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banco de Occidente S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_BancoPopularSAMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BancoPopularSAMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Banco Popular.",
        "label": "Banco Popular S.A."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BankDebtInstrumentsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BankDebtInstrumentsHeld",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bank debt instruments held",
        "verboseLabel": "Central Bank debt instruments held"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of debt instruments, including instruments called debt securities, held by the entity that were issued by a bank. [Refer: Debt instruments held]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_BankDebtInstrumentsHeldPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BankDebtInstrumentsHeldPercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of central bank issued debt instruments held by entity.",
        "label": "Bank debt instruments held, Percentage",
        "verboseLabel": "Central Bank debt instruments held, Percentage"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BankersAcceptances": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BankersAcceptances",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of the financial institution's obligation to pay the holder of the customer's draft which the financial institution has guaranteed (i.e., Banker's Acceptance).",
        "label": "Bankers' Acceptances",
        "terseLabel": "Bankers Acceptances"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BankingArrangementsClassifiedAsCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BankingArrangementsClassifiedAsCashEquivalents",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other banking arrangements, classified as cash equivalents",
        "verboseLabel": "Clearing houses"
       }
      },
      "en": {
       "role": {
        "documentation": "A classification of cash equivalents representing banking arrangements that the entity does not separately disclose in the same statement or note. [Refer: Cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r623"
     ]
    },
    "aval_BankingServiceFees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BankingServiceFees",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banking service fees",
        "label": "Banking service fees",
        "terseLabel": "Banking service fees",
        "verboseLabel": "Commissions on banking services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BankingServicesExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BankingServicesExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionExpense",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banking services expenses",
        "label": "Banking services expenses",
        "negatedLabel": "Banking services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BankingServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BankingServicesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Banking Services [member]",
        "label": "Banking Services [member]",
        "terseLabel": "Banking Services"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BasicEarningsLossPerInstrumentFromContinuingOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerInstrumentFromContinuingOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings (loss) per instrument from continuing operations, participating equity instruments other than ordinary shares",
        "terseLabel": "Basic earnings per ADS (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Basic earnings (loss) per instrument from continuing operations for an equity instrument that participates in profit with ordinary shares according to a predetermined formula. [Refer: Basic earnings (loss) per instrument, participating equity instruments other than ordinary shares; Continuing operations, unless line item indicates otherwise [member]]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_BasicEarningsLossPerInstrumentFromDiscontinuedOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerInstrumentFromDiscontinuedOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings (loss) per instrument from discontinued operations, participating equity instruments other than ordinary shares",
        "terseLabel": "Basic earnings per ADS (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Basic earnings (loss) per instrument from discontinued operations for an equity instrument that participates in profit with ordinary shares according to a predetermined formula. [Refer: Basic earnings (loss) per instrument, participating equity instruments other than ordinary shares; Discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_BasicEarningsLossPerInstrumentParticipatingEquityInstrumentsOtherThanOrdinaryShares": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerInstrumentParticipatingEquityInstrumentsOtherThanOrdinaryShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings (loss) per instrument, participating equity instruments other than ordinary shares",
        "verboseLabel": "Basic earnings per ADS in Colombian pesos"
       }
      },
      "en": {
       "role": {
        "documentation": "Basic earnings (loss) per share for an equity instrument that participates in profit with ordinary shares according to a predetermined formula."
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_BasicEarningsLossPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings (loss) per share",
        "terseLabel": "Net income per share basic (in Colombian pesos, see note 25.3)",
        "verboseLabel": "Basic earnings per share to common shareholders (pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator)."
       }
      }
     },
     "auth_ref": [
      "r131",
      "r132"
     ]
    },
    "ifrs-full_BasicEarningsLossPerShareFromContinuingOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerShareFromContinuingOperations",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings (loss) per share from continuing operations",
        "terseLabel": "Basic earnings per share to common shareholders (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Basic earnings (loss) per share from continuing operations. [Refer: Basic earnings (loss) per share; Continuing operations, unless line item indicates otherwise [member]]"
       }
      }
     },
     "auth_ref": [
      "r131",
      "r132"
     ]
    },
    "ifrs-full_BasicEarningsLossPerShareFromDiscontinuedOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerShareFromDiscontinuedOperations",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings (loss) per share from discontinued operations",
        "terseLabel": "Net income per share basic (in Colombian pesos, see note 25.3 \"Earnings per share\").",
        "verboseLabel": "Basic earnings per share to common shareholders (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Basic earnings (loss) per share from discontinued operations. [Refer: Basic earnings (loss) per share; Discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r132",
      "r133"
     ]
    },
    "aval_BasicSolvencyRiskRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BasicSolvencyRiskRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This represents an enterprise's ability to meet its debt and other obligations.",
        "label": "Basic Solvency Risk Ratio",
        "terseLabel": "CET1 solvency ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BbiMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BbiMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "BBI [Member]",
        "label": "BBI [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BearerPlantsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BearerPlantsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bearer plants [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing bearer plants. Bearer plant is a living plant that (a) is used in the production or supply of agricultural produce; (b) is expected to bear produce for more than one period; and (c) has a remote likelihood of being sold as agricultural produce, except for incidental scrap sales. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r400"
     ]
    },
    "ifrs-full_BiologicalAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BiologicalAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Biological assets",
        "terseLabel": "Biological assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of living animals or plants recognised as assets."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r188",
      "r411"
     ]
    },
    "aval_BiologicalAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BiologicalAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Biological assets [member]",
        "label": "Biological assets [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BondForwardMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BondForwardMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bond forward [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BondsIssued": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BondsIssued",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Borrowings",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bonds issued",
        "verboseLabel": "Bonds issued"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of bonds issued by the entity."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_BondsIssuedDesignatedAsHedgingInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BondsIssuedDesignatedAsHedgingInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of bonds issued by the entity.",
        "label": "Bonds Issued Designated As Hedging Instruments",
        "verboseLabel": "Bonds issued designated as hedging instruments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BondsIssuedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BondsIssuedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to bonds issued.",
        "label": "Bonds issued [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BonusPayments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BonusPayments",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of bonus payments during the period.",
        "label": "Bonus Payments",
        "negatedLabel": "Employee bonuses"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingCostsCapitalised": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BorrowingCostsCapitalised",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowing costs capitalised",
        "terseLabel": "Borrowing costs capitalized",
        "verboseLabel": "Borrowing costs capitalised"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest and other costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset."
       }
      }
     },
     "auth_ref": [
      "r107"
     ]
    },
    "aval_BorrowingFromBanksAndOtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingFromBanksAndOtherMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowing from banks and other [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingFromBanksAndSimilarMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingFromBanksAndSimilarMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Borrowing from banks and similar.",
        "label": "Borrowing from banks and similar [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingFromDevelopmentEntitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingFromDevelopmentEntitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowing from development entities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Borrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Borrowings",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings",
        "positiveLabel": "Financial obligations",
        "totalLabel": "Total borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of outstanding funds that the entity is obligated to repay."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_BorrowingsAdjustmentToInterestRateBasis": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BorrowingsAdjustmentToInterestRateBasis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, adjustment to interest rate basis",
        "verboseLabel": "Borrowing rate interest rate basis"
       }
      },
      "en": {
       "role": {
        "documentation": "The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r630"
     ]
    },
    "aval_BorrowingsAndOvernightFunds": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsAndOvernightFunds",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Borrowings and overnight funds",
        "label": "Borrowings and overnight funds",
        "totalLabel": "Total interbank borrowings and overnight funds"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsByTypeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BorrowingsByTypeAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, by type [abstract]",
        "verboseLabel": "Financial obligations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingsFromAndeanDevelopmentCorporation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsFromAndeanDevelopmentCorporation",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Borrowings from Andean Development Corporation",
        "label": "Borrowings from Andean Development Corporation",
        "terseLabel": "Andean Development Corporation (Corporacion Andina de Fomento)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingsFromBanksAndOthers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsFromBanksAndOthers",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Borrowings",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Borrowings from banks and others",
        "label": "Borrowings from banks and others",
        "terseLabel": "Total borrowings from banks and others",
        "verboseLabel": "Borrowings from banks and others"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingsFromBanksAndOthersBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsFromBanksAndOthersBorrowings",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Borrowings from banks and others, borrowings",
        "label": "Borrowings from banks and others, borrowings",
        "terseLabel": "Borrowings"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingsFromBanksAndOthersDevelopmentEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsFromBanksAndOthersDevelopmentEntities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Borrowings from banks and others, development entities",
        "label": "Borrowings from banks and others, development entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingsFromBanksAndOthersNoncurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsFromBanksAndOthersNoncurrent",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Borrowings from banks and others, noncurrent",
        "label": "Borrowings from banks and others, noncurrent",
        "terseLabel": "Borrowings from banks and others due over 12 months"
       }
      }
     },
     "auth_ref": []
    },
    "aval_BorrowingsFromBanksAndOthersNoncurrentDevelopmentEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsFromBanksAndOthersNoncurrentDevelopmentEntities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Borrowings from banks and others, noncurrent, development entities",
        "label": "Borrowings from banks and others, noncurrent, development entities",
        "terseLabel": "Borrowings from development entities due over 12 months"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsInterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BorrowingsInterestRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, interest rate",
        "terseLabel": "Borrowing rate",
        "verboseLabel": "Interest Rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The interest rate on borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r630"
     ]
    },
    "aval_BorrowingsIssuedDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BorrowingsIssuedDate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The issued date of borrowings.",
        "label": "Borrowings, Issued Date",
        "verboseLabel": "Issue Date"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsMaturity": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BorrowingsMaturity",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, maturity",
        "verboseLabel": "Maturity Date"
       }
      },
      "en": {
       "role": {
        "documentation": "The maturity of borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r630"
     ]
    },
    "ifrs-full_BottomOfRangeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BottomOfRangeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bottom of range [member]",
        "terseLabel": "Bottom of range"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the bottom of a range."
       }
      }
     },
     "auth_ref": [
      "r198",
      "r253",
      "r276",
      "r284",
      "r425",
      "r427",
      "r630"
     ]
    },
    "ifrs-full_BuildingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BuildingsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Buildings [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of plant, property and equipment representing depreciable buildings and similar structures for use in operations. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r601"
     ]
    },
    "ifrs-full_BusinessCombinationsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BusinessCombinationsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business combinations [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r286"
     ]
    },
    "ifrs-full_BusinessCombinationsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "BusinessCombinationsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business combinations [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Business combinations' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r286",
      "r291"
     ]
    },
    "aval_BusinessCombinationsSharesAcquiredPricePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "BusinessCombinationsSharesAcquiredPricePerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business combinations, shares acquired, price per share",
        "label": "Business combinations, shares acquired, price per share",
        "terseLabel": "Business combinations, shares acquired, price per share"
       }
      }
     },
     "auth_ref": []
    },
    "dei_BusinessContactMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "BusinessContactMember",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Contact [Member]",
        "documentation": "Business contact for the entity"
       }
      }
     },
     "auth_ref": [
      "r479",
      "r502"
     ]
    },
    "country_CL": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "CL",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "CHILE"
       }
      }
     },
     "auth_ref": []
    },
    "country_CO": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "CO",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "COLOMBIA"
       }
      }
     },
     "auth_ref": []
    },
    "currency_COP": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2024",
     "localname": "COP",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Colombia, Pesos"
       }
      }
     },
     "auth_ref": []
    },
    "country_CR": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "CR",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "COSTA RICA"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CapitalGainTaxMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CapitalGainTaxMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital gain Tax"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CapitalisationRateOfBorrowingCostsEligibleForCapitalisation": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CapitalisationRateOfBorrowingCostsEligibleForCapitalisation",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capitalisation rate of borrowing costs eligible for capitalisation",
        "terseLabel": "Capitalized interest rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average of interest and other costs that an entity incurs in connection with the borrowing of funds applicable to the borrowings of the entity that are outstanding during the period, other than borrowings made specifically for the purpose of obtaining a qualifying asset. [Refer: Weighted average [member]; Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r108"
     ]
    },
    "aval_CapitalizationAndPaymentsToAcquireConcessionArrangementRightClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CapitalizationAndPaymentsToAcquireConcessionArrangementRightClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Capitalization and payments to acquire concession arrangement right classified as investing activities.",
        "label": "Capitalization and Payments To Acquire Concession Arrangement Right Classified As Investing Activities",
        "negatedLabel": "Capitalization and payments in concession contracts"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CapitalizedExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CapitalizedExpenses",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Capitalized expenses",
        "label": "Capitalized expenses",
        "terseLabel": "Capitalized expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CapitalizedLeasingCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CapitalizedLeasingCost",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Capitalized leasing cost",
        "label": "Capitalized leasing cost"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r79",
      "r81",
      "r165",
      "r171",
      "r184",
      "r185",
      "r187",
      "r188",
      "r189",
      "r290",
      "r330",
      "r331"
     ]
    },
    "ifrs-full_CarryingAmountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CarryingAmountMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Carrying amount [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the amount at which an asset is recognised in the statement of financial position (after deducting any accumulated depreciation or amortisation and accumulated impairment losses). It also represents the standard value for the 'Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount' axis if no other member is used. [Refer: Depreciation and amortisation expense; Impairment loss]"
       }
      }
     },
     "auth_ref": [
      "r81",
      "r171",
      "r184",
      "r187",
      "r188",
      "r290",
      "r330",
      "r331"
     ]
    },
    "aval_CasaDeBolsaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CasaDeBolsaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Casa de Bolsa S.A. [member]",
        "label": "Casa de Bolsa SA [member]",
        "terseLabel": "Casa de Bolsa S.A."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Cash": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Cash",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash on hand and demand deposits. [Refer: Cash on hand]"
       }
      }
     },
     "auth_ref": [
      "r623"
     ]
    },
    "ifrs-full_CashAndBankBalancesAtCentralBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashAndBankBalancesAtCentralBanks",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and bank balances at central banks",
        "verboseLabel": "Deposits in the Colombian central bank"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash and bank balances held at central banks."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_CashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashAndCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and cash equivalents",
        "periodEndLabel": "Cash and cash equivalents at end of year",
        "periodStartLabel": "Cash and cash equivalents at beginning of year",
        "terseLabel": "Cash and cash equivalents",
        "totalLabel": "Total cash and cash equivalents",
        "verboseLabel": "Cash and equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r18",
      "r199",
      "r229"
     ]
    },
    "aval_CashAndCashEquivalentsFinancialEntitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CashAndCashEquivalentsFinancialEntitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and cash equivalents, financial entities [member]",
        "terseLabel": "Financial entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CashAndCashEquivalentsWithCentralBankMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CashAndCashEquivalentsWithCentralBankMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and cash equivalents with Central Bank [member]",
        "terseLabel": "Central bank"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CashCollateralOnDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CashCollateralOnDerivatives",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of cash collateral on derivative transactions.",
        "label": "Cash Collateral On Derivatives",
        "negatedLabel": "Collateralization of cash"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash collateral pledged subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities",
        "negatedLabel": "Cash collateral pledged subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash collateral pledged that is subject to an enforceable master netting arrangement or similar agreement and that is not set off against financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r439",
      "r468"
     ]
    },
    "ifrs-full_CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash collateral received subject to enforceable master netting arrangement or similar agreement not set off against financial assets",
        "negatedLabel": "Cash collateral received subject to enforceable master netting arrangement or similar agreement not set off against financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash collateral received that is subject to an enforceable master netting arrangement or similar agreement and that is not set off against financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r439",
      "r468"
     ]
    },
    "ifrs-full_CashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails": {
       "parentTag": "ifrs-full_CashAndCashEquivalents",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value."
       }
      }
     },
     "auth_ref": [
      "r623"
     ]
    },
    "ifrs-full_CashFlowHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowHedgesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flow hedges [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedges of the exposure to variability in cash flows that (a) are attributable to a particular risk associated with a recognised asset or liability (such as all or some future interest payments on variable rate debt) or a highly probable forecast transaction; and (b) could affect profit or loss. [Refer: Types of hedges [domain]]"
       }
      }
     },
     "auth_ref": [
      "r177",
      "r315",
      "r317",
      "r320"
     ]
    },
    "ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from losing control of subsidiaries or other businesses, classified as investing activities",
        "verboseLabel": "Loss of control in subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The aggregate cash flows arising from losing control of subsidiaries or other businesses, classified as investing activities. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r196"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInDecreaseIncreaseInRestrictedCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInDecreaseIncreaseInRestrictedCashAndCashEquivalents",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) decrease (increase) in restricted cash and cash equivalents",
        "terseLabel": "Cash flows from (used in) decrease (increase) in restricted cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow (outflow) due to a decrease (increase) in restricted cash and cash equivalents. [Refer: Restricted cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) financing activities",
        "totalLabel": "Net cash used in financing activities",
        "verboseLabel": "Net cash used in financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) financing activities, which are activities that result in changes in the size and composition of the contributed equity and borrowings of the entity, from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r190",
      "r200"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInFinancingActivitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) financing activities [abstract]",
        "terseLabel": "Cash flows from financing activities:",
        "verboseLabel": "Cash flows from financing activities:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowsFromUsedInInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) investing activities",
        "terseLabel": "Net cash used in investing activities",
        "totalLabel": "Net cash (used) provided in investing activities",
        "verboseLabel": "Net cash used in provided by investing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) investing activities, which are the acquisition and disposal of long-term assets and other investments not included in cash equivalents, from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r190",
      "r200"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInInvestingActivitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) investing activities [abstract]",
        "verboseLabel": "Cash flows from investing activities:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) investing activities, discontinued operations",
        "terseLabel": "Discontinued operation"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) the entity's investing activities, related to discontinued operations. [Refer: Discontinued operations [member]; Cash flows from (used in) investing activities]"
       }
      }
     },
     "auth_ref": [
      "r296"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInOperatingActivities",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) operating activities",
        "terseLabel": "Net cash provided by operating activities",
        "totalLabel": "Net cash provided (used in) operating activities",
        "verboseLabel": "Cash flow from operating activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) operating activities, which are the principal revenue-producing activities of the entity and other activities that are not investing or financing activities, from continuing and discontinued operations. [Refer: Revenue]"
       }
      }
     },
     "auth_ref": [
      "r190",
      "r200"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInOperatingActivitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) operating activities [abstract]",
        "terseLabel": "Cash flows from operating activities:",
        "verboseLabel": "Cash flows from operating activities:"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CashGeneratingUnitBookValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CashGeneratingUnitBookValue",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cash-generating unit, book value",
        "label": "Cash-generating unit, book value",
        "terseLabel": "Book value of cash-generating unit"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashOnHand": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashOnHand",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails": {
       "parentTag": "ifrs-full_CashAndCashEquivalents",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash on hand",
        "terseLabel": "Cash held by entity"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash held by the entity. This does not include demand deposits."
       }
      }
     },
     "auth_ref": [
      "r623"
     ]
    },
    "ifrs-full_CashOutflowForLeases": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CashOutflowForLeases",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash outflow for leases",
        "negatedLabel": "Leases",
        "negatedTerseLabel": "Leases contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for leases."
       }
      }
     },
     "auth_ref": [
      "r266"
     ]
    },
    "aval_CashSurplusAndChecksInProcessOfClearingLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CashSurplusAndChecksInProcessOfClearingLiability",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of liabilities related to cash surplus and checks in process of clearing.",
        "label": "Cash Surplus and Checks in Process of Clearing, Liability",
        "terseLabel": "Cash surplus and checks in process of clearing"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CashierChecksPayable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CashierChecksPayable",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of liability related to cashier checks payable.",
        "label": "Cashier Checks Payable",
        "verboseLabel": "Cashier checks"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CategoriesOfFinancialAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialAssetsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r348"
     ]
    },
    "ifrs-full_CategoriesOfFinancialAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialAssetsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial assets [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated categories of financial assets. It also represents the standard value for the 'Categories of financial assets' axis if no other member is used. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r348"
     ]
    },
    "ifrs-full_CategoriesOfFinancialLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialLiabilitiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r348"
     ]
    },
    "ifrs-full_CategoriesOfFinancialLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialLiabilitiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated categories of financial liabilities. It also represents the standard value for the 'Categories of financial liabilities' axis if no other member is used. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r348"
     ]
    },
    "ifrs-full_CategoriesOfRelatedPartiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CategoriesOfRelatedPartiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of related parties [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r118"
     ]
    },
    "ifrs-full_CategoriesOfRelatedPartiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CategoriesOfRelatedPartiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of related parties [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Categories of related parties' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r118"
     ]
    },
    "aval_CentralBanksDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CentralBanksDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Central Banks"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CentralBanksMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CentralBanksMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Central Banks",
        "label": "Central Banks [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CentralCounterpartiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CentralCounterpartiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Central counterparties [member]",
        "label": "Central counterparties [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CfcGasHoldingS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CfcGasHoldingS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information pertaining to CFC Gas Holding S.A.S.",
        "label": "CFC Gas Holding S.A.S"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ChangedPeerGroupFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ChangedPeerGroupFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changed Peer Group, Footnote [Text Block]",
        "terseLabel": "Changed Peer Group, Footnote"
       }
      }
     },
     "auth_ref": [
      "r535"
     ]
    },
    "ifrs-full_ChangesInEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ChangesInEquity",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in equity",
        "terseLabel": "Current period change"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity. [Refer: Equity]"
       }
      }
     },
     "auth_ref": [
      "r5"
     ]
    },
    "ifrs-full_ChangesInIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ChangesInIntangibleAssetsOtherThanGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in intangible assets other than goodwill",
        "terseLabel": "Cost / (Amortization) / (Impairment loss)"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in intangible assets other than goodwill. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r171"
     ]
    },
    "aval_ChangesInOperatingAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ChangesInOperatingAssetsAndLiabilitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes in operating assets and liabilities [abstract]",
        "verboseLabel": "Changes in operating assets and liabilities:"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CheckingAccountsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CheckingAccountsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Checking accounts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ChecksIssuedButNotPaid": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ChecksIssuedButNotPaid",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The liability incurred for checks issued but not paid.",
        "label": "Checks Issued but not paid",
        "verboseLabel": "Checks drawn and not paid"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ChemicalProductionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ChemicalProductionMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Chemical production"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]",
        "terseLabel": "Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year"
       }
      }
     },
     "auth_ref": [
      "r532"
     ]
    },
    "ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]",
        "terseLabel": "Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested"
       }
      }
     },
     "auth_ref": [
      "r530"
     ]
    },
    "dei_CityAreaCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "CityAreaCode",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "City Area Code",
        "documentation": "Area code of city"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CivilProceedingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CivilProceedingsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Civil proceedings"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ClassesOfAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfAssetsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r138",
      "r140",
      "r251",
      "r268"
     ]
    },
    "ifrs-full_ClassesOfAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfAssetsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of assets [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits. It also represents the standard value for the 'Classes of assets' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r138",
      "r251",
      "r268"
     ]
    },
    "ifrs-full_ClassesOfContingentLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfContingentLiabilitiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of contingent liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r162",
      "r287"
     ]
    },
    "ifrs-full_ClassesOfContingentLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfContingentLiabilitiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of contingent liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for possible obligations that arise from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within the control of the entity; or, present obligations that arise from past events but are not recognised because (a) it is probable that an outflow of resources embodying economic benefits will be required to settle the obligations; or (b) the amount of the obligations cannot be measured with sufficient reliability. It also represents the standard value for the 'Classes of contingent liabilities' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r163",
      "r287"
     ]
    },
    "ifrs-full_ClassesOfFinancialAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfFinancialAssetsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r283",
      "r340",
      "r341",
      "r379",
      "r380"
     ]
    },
    "ifrs-full_ClassesOfFinancialAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfFinancialAssetsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial assets [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes of financial assets. It also represents the standard value for the 'Classes of financial assets' axis if no other member is used. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r283",
      "r340",
      "r341",
      "r379",
      "r380"
     ]
    },
    "ifrs-full_ClassesOfFinancialInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfFinancialInstrumentsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r333",
      "r337",
      "r338"
     ]
    },
    "ifrs-full_ClassesOfFinancialInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfFinancialInstrumentsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes of financial instruments. Financial instruments are contracts that give rise to a financial asset of one entity and a financial liability or equity instrument of another entity. It also represents the standard value for the 'Classes of financial instruments' axis if no other member is used. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r330",
      "r333",
      "r337",
      "r338"
     ]
    },
    "ifrs-full_ClassesOfFinancialLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfFinancialLiabilitiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r340",
      "r341",
      "r379",
      "r380"
     ]
    },
    "ifrs-full_ClassesOfFinancialLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfFinancialLiabilitiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes financial liabilities. It also represents the standard value for the 'Classes of financial liabilities' axis if no other member is used. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r340",
      "r341",
      "r379",
      "r380"
     ]
    },
    "ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfIntangibleAssetsOtherThanGoodwillAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of intangible assets other than goodwill [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfIntangibleAssetsOtherThanGoodwillDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of intangible assets other than goodwill [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Classes of intangible assets other than goodwill' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "ifrs-full_ClassesOfLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfLiabilitiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r251"
     ]
    },
    "ifrs-full_ClassesOfLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfLiabilitiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits. It also represents the standard value for the 'Classes of liabilities' axis if no other member is used. [Refer: Liabilities]"
       }
      }
     },
     "auth_ref": [
      "r251"
     ]
    },
    "ifrs-full_ClassesOfOtherProvisionsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfOtherProvisionsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of other provisions [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for provisions other than provisions for employee benefits. It also represents the standard value for the 'Classes of other provisions' axis if no other member is used. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r160"
     ]
    },
    "ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfPropertyPlantAndEquipmentAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of property, plant and equipment [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r82"
     ]
    },
    "ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfPropertyPlantAndEquipmentDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of property, plant and equipment [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Classes of property, plant and equipment' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r82"
     ]
    },
    "ifrs-full_ClassesOfProvisionsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfProvisionsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of other provisions [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r160"
     ]
    },
    "ifrs-full_ClassesOfShareCapitalAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfShareCapitalAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of share capital [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r39"
     ]
    },
    "ifrs-full_ClassesOfShareCapitalDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClassesOfShareCapitalDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of share capital [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for share capital of the entity. It also represents the standard value for the 'Classes of share capital' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r39"
     ]
    },
    "aval_ClassificationOfFinancialAssetsAndFinancialLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ClassificationOfFinancialAssetsAndFinancialLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Classification of financial assets and financial liabilities [abstract]",
        "label": "Classification of financial assets and financial liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ClassificationOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of classification of financial assets and liabilities.",
        "label": "Classification Of Financial Assets And Financial Liabilities [Table Text Block]",
        "terseLabel": "Schedule of reconciliation of gross between line items in the statement of financial position and categories of financial instruments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ClassificationOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure of classification of financial assets and liabilities.",
        "label": "Classification Of Financial Assets And Financial Liabilities [Text Block]",
        "terseLabel": "CLASSIFICATION OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CleaningAndSecurityServicesExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CleaningAndSecurityServicesExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to cleaning and security services.",
        "label": "Cleaning and security services expense",
        "negatedLabel": "Cleaning and security services"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ClosingForeignExchangeRate": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ClosingForeignExchangeRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingChangesInFluctuationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Closing foreign exchange rate",
        "verboseLabel": "Value of US 1"
       }
      },
      "en": {
       "role": {
        "documentation": "The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ecd_CoSelectedMeasureAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "CoSelectedMeasureAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Company Selected Measure Amount",
        "terseLabel": "Company Selected Measure Amount"
       }
      }
     },
     "auth_ref": [
      "r536"
     ]
    },
    "ecd_CoSelectedMeasureName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "CoSelectedMeasureName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Company Selected Measure Name",
        "terseLabel": "Company Selected Measure Name"
       }
      }
     },
     "auth_ref": [
      "r536"
     ]
    },
    "aval_CollateralizedDepositsInCashOrCashEquivalentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedDepositsInCashOrCashEquivalentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized deposits in cash or cash equivalents"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedFiduciaryAgreementsStandByLettersAndGuaranteeFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedFiduciaryAgreementsStandByLettersAndGuaranteeFundsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized fiduciary agreements stand by letters and guarantee funds"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedInvestmentsInEquityInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedInvestmentsInEquityInstrumentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized investments in equity instruments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedLeasedMachineriesAndVehiclesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedLeasedMachineriesAndVehiclesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized leased machineries and vehicles"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedMortgagesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedMortgagesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateralized Mortgages"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedOtherAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedOtherAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized other assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedOtherRealEstateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedOtherRealEstateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized other real estate"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedPledgedIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedPledgedIncomeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized pledged income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollateralizedPledgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollateralizedPledgesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Collateralized pledges"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollectionOnBehalfOfThirdParties": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollectionOnBehalfOfThirdParties",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The reimbursable liability related to collection made on behalf of third parties.",
        "label": "Collection on behalf of third parties",
        "terseLabel": "Collection on behalf of third parties"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CollectionServiceLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CollectionServiceLiability",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of collection service liability.",
        "label": "Collection service Liability",
        "verboseLabel": "Collection service"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ColombianMunicipalitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ColombianMunicipalitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Colombian municipalities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ColombianaDeExtrusionSaExtrucolMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ColombianaDeExtrusionSaExtrucolMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Colombiana de Extrusion S.A. - Extrucol [member]",
        "label": "Colombiana de Extrusion SA - Extrucol [member]",
        "terseLabel": "Colombiana de Extrusion S.A. - Extrucol"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ColombianaDeLicitacionesYConcesionesSasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ColombianaDeLicitacionesYConcesionesSasMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Colombiana de Licitaciones y Concesiones S.A.S"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommerceMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommerceMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commerce [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommercialLendingPortfolioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommercialLendingPortfolioMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commercial lending portfolio [member]",
        "label": "Commercial lending portfolio [member]",
        "terseLabel": "Commercial - Client portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommercialMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommercialMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commercial [member]",
        "label": "Commercial [member]",
        "terseLabel": "Commercial"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommercialServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommercialServicesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commercial services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommissionsAndFeesFromOfficeNetworkServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommissionsAndFeesFromOfficeNetworkServices",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commissions and fees from office network services",
        "label": "Commissions and fees from office network services",
        "verboseLabel": "Office network services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommissionsAndFeesFromStorageServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommissionsAndFeesFromStorageServices",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commissions and fees from storage services",
        "label": "Commissions and fees from storage services",
        "terseLabel": "Storage services",
        "verboseLabel": "Bonded warehouse services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommissionsAndFeesFromTrustActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommissionsAndFeesFromTrustActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commissions and fees from trust activities",
        "label": "Commissions and fees from trust activities",
        "terseLabel": "Trust activities and portfolio management services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommissionsAndFeesPayable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommissionsAndFeesPayable",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of commissions and fees payable.",
        "label": "Commissions and fees Payable",
        "verboseLabel": "Commissions and fees"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommissionsOnDraftsChecksAndCheckbooks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommissionsOnDraftsChecksAndCheckbooks",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commissions on drafts, checks and checkbooks",
        "label": "Commissions on drafts, checks and checkbooks",
        "verboseLabel": "Commissions on transfers, checks and checkbooks"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommitmentsOriginatedInShortPositionsSimultaneousOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommitmentsOriginatedInShortPositionsSimultaneousOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": "aval_InterbankFunds",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of commitments originated in short positions simultaneous operations.",
        "label": "Commitments Originated in Short Positions Simultaneous Operations",
        "verboseLabel": "Commitments originated in short positions simultaneous operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommitmentsToTransferOpenAndClosedRepoOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommitmentsToTransferOpenAndClosedRepoOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": "aval_InterbankFunds",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of commitments to transfer open and closed repo operations.",
        "label": "Commitments to Transfer Open and Closed Repo Operations",
        "verboseLabel": "Commitments to transfer open and closed repo operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommitmentsToTransferSimultaneousOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommitmentsToTransferSimultaneousOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": "aval_InterbankFunds",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of commitments to transfer simultaneous operations.",
        "label": "Commitments to Transfer Simultaneous Operations",
        "verboseLabel": "Commitments to transfer simultaneous operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CommonStockConversionToPreferredStock": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CommonStockConversionToPreferredStock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of common stock converted to preferred stock during the reporting period.",
        "label": "Common stock conversion to preferred stock",
        "terseLabel": "Common stock conversion to preferred stock"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "CompActuallyPaidVsCoSelectedMeasureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Company Selected Measure [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Company Selected Measure"
       }
      }
     },
     "auth_ref": [
      "r541"
     ]
    },
    "ecd_CompActuallyPaidVsNetIncomeTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "CompActuallyPaidVsNetIncomeTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Net Income [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Net Income"
       }
      }
     },
     "auth_ref": [
      "r540"
     ]
    },
    "ecd_CompActuallyPaidVsOtherMeasureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "CompActuallyPaidVsOtherMeasureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Other Measure [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Other Measure"
       }
      }
     },
     "auth_ref": [
      "r542"
     ]
    },
    "ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "CompActuallyPaidVsTotalShareholderRtnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Total Shareholder Return [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Total Shareholder Return"
       }
      }
     },
     "auth_ref": [
      "r539"
     ]
    },
    "aval_CompaniaEnergeticaDeOccidenteS.a.E.s.pMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CompaniaEnergeticaDeOccidenteS.a.E.s.pMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Compania Energetica de Occidente S.A. E.S.P.",
        "label": "Compania Energetica de Occidente S.A. E.S.P."
       }
      }
     },
     "auth_ref": []
    },
    "aval_CompaniaHoteleraCartagenaDeIndiasSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CompaniaHoteleraCartagenaDeIndiasSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Compania Hotelera Cartagena de Indias S.A. [member]",
        "label": "Compania Hotelera Cartagena de Indias SA [member]",
        "terseLabel": "Compania Hotelera Cartagena de Indias S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_CompensationReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CompensationReceivable",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of credit card and network compensation receivable.",
        "label": "Compensation Receivable",
        "verboseLabel": "Credit card compensations and network compensation"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfEquityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComponentsOfEquityAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of equity [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    },
    "ifrs-full_ComponentsOfEquityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComponentsOfEquityDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of equity [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the residual interest in the assets of the entity after deducting all its liabilities. It also represents the standard value for the 'Components of equity' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    },
    "ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTaxAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]",
        "terseLabel": "Items that will be reclassified to profit or loss",
        "verboseLabel": "Other Comprehensive Income items which were reclassified to profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTaxAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]",
        "terseLabel": "Items that will not be reclassified to profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfOtherComprehensiveIncomeCalc2": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income",
        "terseLabel": "OCI - Controlling",
        "totalLabel": "Total comprehensive income, net of taxes"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of change in equity resulting from transactions and other events, other than those changes resulting from transactions with owners in their capacity as owners."
       }
      }
     },
     "auth_ref": [
      "r1",
      "r44",
      "r206",
      "r209",
      "r224",
      "r419"
     ]
    },
    "ifrs-full_ComprehensiveIncomeAttributableToAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComprehensiveIncomeAttributableToAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income attributable to [abstract]",
        "verboseLabel": "Total comprehensive income for the year attributable to:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComprehensiveIncomeAttributableToNoncontrollingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfOtherComprehensiveIncomeCalc2": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income, attributable to non-controlling interests",
        "verboseLabel": "Non-controlling interests"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of comprehensive income attributable to non-controlling interests. [Refer: Comprehensive income; Non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r1",
      "r47"
     ]
    },
    "ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComprehensiveIncomeAttributableToOwnersOfParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfOtherComprehensiveIncomeCalc2": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income, attributable to owners of parent",
        "verboseLabel": "Owners of the parent"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of comprehensive income attributable to owners of the parent. [Refer: Comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r1",
      "r48"
     ]
    },
    "ifrs-full_ComputerEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComputerEquipmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Computer equipment [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing computer equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r601"
     ]
    },
    "ifrs-full_ComputerSoftwareMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ComputerSoftwareMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Computer software [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets representing computer software. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r408"
     ]
    },
    "aval_ConcentrationRiskPercentageFinancialAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcentrationRiskPercentageFinancialAssets",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Concentration risk, percentage, financial assets",
        "label": "Concentration risk, percentage, financial assets",
        "terseLabel": "Concentration risk, percentage, financial assets (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcentrationsOfDepositsPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcentrationsOfDepositsPercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deposits of each economic sector as a percentage of total deposits from customers",
        "label": "Concentrations of deposits, percentage",
        "terseLabel": "Concentrations of deposits, percentage"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcesionariaNuevaViaDelMarS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcesionariaNuevaViaDelMarS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Concesionaria Nueva Via del Mar S.A.S.",
        "label": "Concesionaria Nueva Via del Mar S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcesionariaPanamericanaS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcesionariaPanamericanaS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Concesionaria Panamericana S.A.S.",
        "label": "Concesionaria Panamericana S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcesionariaVialAndinaS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcesionariaVialAndinaS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Concesionaria Vial Andina S.A.S.",
        "label": "Concesionaria Vial Andina S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcesionariaVialDelOrienteS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcesionariaVialDelOrienteS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Concesionaria Vial Del Oriente S.A.S.",
        "label": "Concesionaria Vial Del Oriente S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcesionariaVialDelPacificoS.a.s.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcesionariaVialDelPacificoS.a.s.Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Concesionaria Vial Del Pacifico S.A.S.",
        "label": "Concesionaria Vial Del Pacifico S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcesionesCcfcS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcesionesCcfcS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Concesiones CCFC S.A.S.",
        "label": "Concesiones CCFC S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcessionArrangementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcessionArrangementsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Concession arrangements [member]",
        "label": "Concession arrangements [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConcessionLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConcessionLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of carrying amount of concession liabilities as on the balance sheet date.",
        "label": "Concession Liabilities",
        "terseLabel": "Contract liability related to concessions"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConditionalContributions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConditionalContributions",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount as of the balance date of conditional contributions.",
        "label": "Conditional Contributions",
        "terseLabel": "Conditional contributions"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ConsolidatedBasisMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConsolidatedBasisMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Consolidated basis.",
        "label": "Consolidated Basis [Member]",
        "terseLabel": "Consolidated basis"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ConsolidatedEntitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "ConsolidatedEntitiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Entities [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ConsolidatedEntitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "ConsolidatedEntitiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Entities [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ConstructionInProgressMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ConstructionInProgressMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Construction in progress [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for expenditure capitalised during the construction of items of property, plant and equipment that are not yet available for use (ie not yet in the location and condition necessary for it to be capable of operating in the manner intended by the management). [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r601"
     ]
    },
    "ifrs-full_ConsumerLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ConsumerLoans",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_FinancialAssetsLoansGrossCarryingAmount",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans to consumers",
        "terseLabel": "Consumer"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of consumer loans made by the entity. [Refer: Loans to consumers [member]]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_ConsumerLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ConsumerLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans to consumers [member]",
        "terseLabel": "Consumer"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for loans that are made to individuals for personal use."
       }
      }
     },
     "auth_ref": [
      "r448",
      "r463",
      "r467"
     ]
    },
    "aval_ConsumerServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ConsumerServicesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consumer services"
       }
      }
     },
     "auth_ref": []
    },
    "dei_ContactPersonnelEmailAddress": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "ContactPersonnelEmailAddress",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contact Personnel Email Address",
        "documentation": "Email address of contact personnel."
       }
      }
     },
     "auth_ref": []
    },
    "dei_ContactPersonnelName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "ContactPersonnelName",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contact Personnel Name",
        "documentation": "Name of contact personnel"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ContinuingAndDiscontinuedOperationsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ContinuingAndDiscontinuedOperationsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing and discontinued operations [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r299"
     ]
    },
    "aval_ContinuingOperationsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ContinuingOperationsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing operations [abstract]",
        "terseLabel": "Continuing operations"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ContinuingOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ContinuingOperationsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing operations, unless line item indicates otherwise [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for components of the entity that are not discontinued operations. A component of an entity comprises operations and cash flows that can be clearly distinguished, operationally and for financial reporting purposes, from the rest of the entity. This meaning may be overridden for line items which are either intrinsically related to discontinued operations (or disposal groups held for sale), or which are typically reported for the aggregate of continuing and discontinued. This member also represents the standard value for the 'Continuing and discontinued operations' axis if no other member is used. [Refer: Discontinued operations [member]; Aggregate continuing and discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r299"
     ]
    },
    "ifrs-full_ContractualCommitmentsForAcquisitionOfIntangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ContractualCommitmentsForAcquisitionOfIntangibleAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesCapitalExpensesCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual commitments for acquisition of intangible assets",
        "terseLabel": "Contractual commitments for acquisition of intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of contractual commitments for the acquisition of intangible assets."
       }
      }
     },
     "auth_ref": [
      "r174"
     ]
    },
    "ifrs-full_ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesCapitalExpensesCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual commitments for acquisition of property, plant and equipment",
        "terseLabel": "Contractual commitments for acquisition of property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of contractual commitments for the acquisition of property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r83"
     ]
    },
    "ifrs-full_CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRights": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRights",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_IntangibleAssetsAndGoodwill",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Copyrights, patents and other industrial property rights, service and operating rights",
        "verboseLabel": "Concession arrangement rights"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of intangible assets representing copyrights, patents and other industrial property rights, service and operating rights. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r409"
     ]
    },
    "ifrs-full_CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRightsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRightsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Copyrights, patents and other industrial property rights, service and operating rights [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets representing copyrights, patents and other industrial property rights, service and operating rights. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r409"
     ]
    },
    "aval_CoreEquityTierOneCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CoreEquityTierOneCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TierOnePrimaryCapital",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Core equity tier one capital",
        "label": "Core equity tier one capital",
        "totalLabel": "CET1"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CorficolombianaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CorficolombianaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Corficolombiana [member]",
        "label": "Corficolombiana",
        "verboseLabel": "Corficolombiana S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_CorficolombianaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CorficolombianaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corficolombiana S.A"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CorporacionFinancieraColombianaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CorporacionFinancieraColombianaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Corporacion Financiera Colombiana [member]",
        "label": "Corporacion Financiera Colombiana [member]",
        "terseLabel": "Corporacion Financiera Colombiana"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CorporacionFinancieraColombianaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CorporacionFinancieraColombianaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corporacion Financiera Colombiana S.A."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CorporateLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CorporateLoans",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_FinancialAssetsLoansGrossCarryingAmount",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans to corporate entities",
        "verboseLabel": "Commercial"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of corporate loans made by the entity. [Refer: Loans to corporate entities [member]]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_CorporateLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CorporateLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans to corporate entities [member]",
        "terseLabel": "Commercial"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for loans made to corporate entities."
       }
      }
     },
     "auth_ref": [
      "r448",
      "r463",
      "r590"
     ]
    },
    "aval_CorporateStockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CorporateStockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corporate stock"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CostOfGoodsAndServicesCommissionAndFeesExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CostOfGoodsAndServicesCommissionAndFeesExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of direct commission and fees expenses incurred during period.",
        "label": "Cost Of Goods And Services, Commission And Fees Expenses",
        "negatedLabel": "Commissions and fees expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CostOfMerchandiseSoldAndServiceExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CostOfMerchandiseSoldAndServiceExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": -1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 4.0
      },
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of merchandise that was sold during the period recognised as an expense and expenses arising from services.",
        "label": "Cost of Merchandise Sold and Service Expenses",
        "negatedLabel": "Costs and expenses of sales goods and services",
        "negatedTotalLabel": "Total costs and expenses of sales goods and services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CostOfSalesDepreciation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CostOfSalesDepreciation",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cost of sales, depreciation",
        "label": "Cost of sales, depreciation",
        "negatedLabel": "Depreciation of tangible assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CostOfSalesDepreciationRightOfUseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CostOfSalesDepreciationRightOfUseAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cost of sales, depreciation, right-of-use assets",
        "label": "Cost of sales, depreciation, right-of-use assets",
        "negatedLabel": "Depreciation of right of use assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CostOfSalesExcludingDepreciation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CostOfSalesExcludingDepreciation",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cost of sales excluding depreciation",
        "label": "Cost of sales excluding depreciation",
        "negatedLabel": "Cost of sales from companies from non-financial sector"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CounterpartiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CounterpartiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Counterparties [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r352"
     ]
    },
    "ifrs-full_CounterpartiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CounterpartiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Counterparties [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the parties to the transaction other than the entity. It also represents the standard value for the 'Counterparties' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r352"
     ]
    },
    "ifrs-full_CountryOfDomicileMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CountryOfDomicileMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Country of domicile [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the country in which the entity is registered and where it has its legal address or registered office."
       }
      }
     },
     "auth_ref": [
      "r373",
      "r374"
     ]
    },
    "ifrs-full_CountryOfIncorporationOrResidenceOfSubsidiary": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CountryOfIncorporationOrResidenceOfSubsidiary",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "definitionGuidance": "Country",
        "label": "Country of incorporation of subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The country in which a subsidiary of the entity is incorporated. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r125",
      "r128",
      "r211",
      "r215"
     ]
    },
    "dei_CountryRegion": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "CountryRegion",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Country Region",
        "documentation": "Region code of country"
       }
      }
     },
     "auth_ref": []
    },
    "dei_CoverAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "CoverAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cover [Abstract]",
        "documentation": "Cover page."
       }
      }
     },
     "auth_ref": []
    },
    "aval_CovimarMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CovimarMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Covimar [member]",
        "label": "Covimar [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CoviorienteMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CoviorienteMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Covioriente [member]",
        "label": "Covioriente [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CovipacificoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CovipacificoMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Covipacifico [member]",
        "label": "Covipacifico [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CpiMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CpiMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "CPI [member]",
        "label": "CPI [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CredibancoSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CredibancoSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Credibanco S.A. [member]",
        "label": "Credibanco SA [member]",
        "terseLabel": "Credibanco S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_CreditAndDebitCardFees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CreditAndDebitCardFees",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Credit and debit card fees",
        "label": "Credit and debit card fees",
        "terseLabel": "Fees on credit cards",
        "verboseLabel": "Credit card fees"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CreditArrangementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CreditArrangementsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Credit arrangements [member]",
        "label": "Credit arrangements [member]",
        "terseLabel": "Credit arrangements"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CreditCardsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CreditCardsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit cards [member]",
        "terseLabel": "Credit Cards"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CreditImpairmentOfFinancialInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CreditImpairmentOfFinancialInstrumentsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit impairment of financial instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337"
     ]
    },
    "ifrs-full_CreditImpairmentOfFinancialInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CreditImpairmentOfFinancialInstrumentsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit impairment of financial instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all statuses of credit impairment of financial instruments. A financial instrument is credit-impaired when one or more events that have a detrimental impact on the estimated future cash flows of that financial instrument have occurred. This member also represents the standard value for the 'Credit impairment of financial instruments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337"
     ]
    },
    "srt_CurrencyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "CurrencyAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CurrencyForwardContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CurrencyForwardContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency forward [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CurrencyOptionsContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CurrencyOptionsContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency Options [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrencyRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrencyRiskMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a type of market risk representing the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in foreign exchange rates. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r277",
      "r278",
      "r279",
      "r280",
      "r355"
     ]
    },
    "ifrs-full_CurrencySwapContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrencySwapContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency swap contract [member]",
        "terseLabel": "Cross currency swap"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a currency swap contract. [Refer: Swap contract [member]]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current bonds issued and current portion of non-current bonds issued",
        "terseLabel": "Bonds issued"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current bonds issued and the current portion of non-current bonds issued. [Refer: Bonds issued]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "dei_CurrentFiscalYearEndDate": {
     "xbrltype": "gMonthDayItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "CurrentFiscalYearEndDate",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current Fiscal Year End Date",
        "documentation": "End date of current fiscal year in the format --MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "aval_CurrentIncomeTaxRelatingHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsIncludedInOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CurrentIncomeTaxRelatingHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsIncludedInOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Current income tax relating hedges of net investments in foreign operations, derivative instruments, included in other comprehensive income",
        "label": "Current income tax relating hedges of net investments in foreign operations, derivative instruments, included in other comprehensive income",
        "negatedLabel": "Current tax (expense) income - Hedging derivatives in foreign currency"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CurrentIncomeTaxRelatingToComponentsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CurrentIncomeTaxRelatingToComponentsOfOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Current income tax relating to components of other comprehensive income",
        "label": "Current income tax relating to components of other comprehensive income",
        "negatedLabel": "Current tax (expense) income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CurrentIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CurrentIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Current income tax relating to components of other comprehensive income that will be reclassified to profit or loss",
        "label": "Current income tax relating to components of other comprehensive income that will be reclassified to profit or loss",
        "negatedLabel": "Current income tax relating to components of other comprehensive income that will be reclassified to profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CurrentIncomeTaxRelatingToHedgingOfNonDerivativeInstrumentsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CurrentIncomeTaxRelatingToHedgingOfNonDerivativeInstrumentsOfOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of current income tax relating to amounts recognised in other comprehensive income in relation to hedging of non-derivative instruments.",
        "label": "Current Income Tax Relating To Hedging of Non-derivative Instruments Of Other Comprehensive Income",
        "negatedLabel": "Current tax (expense) income - Hedging non-derivative instrument"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentRestrictedCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrentRestrictedCashAndCashEquivalents",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current restricted cash and cash equivalents",
        "terseLabel": "Cash held for specific purposes"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current restricted cash and cash equivalents. [Refer: Restricted cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrentServiceCostNetDefinedBenefitLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase in net defined benefit liability (asset) resulting from current service cost",
        "terseLabel": "Service costs"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r90"
     ]
    },
    "ifrs-full_CurrentTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrentTaxAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_IncomeTaxAssetsNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax assets",
        "terseLabel": "Current tax asset",
        "verboseLabel": "Current"
       }
      },
      "en": {
       "role": {
        "documentation": "The excess of amount paid for current tax in respect of current and prior periods over the amount due for those periods. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period."
       }
      }
     },
     "auth_ref": [
      "r22"
     ]
    },
    "ifrs-full_CurrentTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrentTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax expense (income)",
        "verboseLabel": "Current period income tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period."
       }
      }
     },
     "auth_ref": [
      "r393"
     ]
    },
    "ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax expense (income) and adjustments for current tax of prior periods",
        "totalLabel": "Subtotal current period taxes"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current tax expense (income) and adjustments for the current tax of prior periods. [Refer: Current tax expense (income); Adjustments for current tax of prior periods]"
       }
      }
     },
     "auth_ref": [
      "r599"
     ]
    },
    "ifrs-full_CurrentTaxLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CurrentTaxLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_IncomeTaxLiabilitiesNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax liabilities",
        "negatedLabel": "Current tax liability",
        "verboseLabel": "Current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current tax for current and prior periods to the extent unpaid. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period."
       }
      }
     },
     "auth_ref": [
      "r22"
     ]
    },
    "aval_CustomerDepositsEffectiveInterestRateFixedTermDepositCertificates": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CustomerDepositsEffectiveInterestRateFixedTermDepositCertificates",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Customer deposits, effective interest rate, fixed term deposit certificates",
        "label": "Customer deposits, effective interest rate, fixed term deposit certificates",
        "terseLabel": "Customer deposits, effective interest rate, fixed term deposit certificates (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CustomerDepositsEffectiveInterestRateInterestBearingCheckingAccounts": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CustomerDepositsEffectiveInterestRateInterestBearingCheckingAccounts",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Customer deposits, effective interest rate, interest-bearing checking accounts",
        "label": "Customer deposits, effective interest rate, interest-bearing checking accounts",
        "terseLabel": "Customer deposits, effective interest rate, interest-bearing checking accounts (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CustomerDepositsEffectiveInterestRateSavingsAccounts": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CustomerDepositsEffectiveInterestRateSavingsAccounts",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Customer deposits, effective interest rate, savings accounts",
        "label": "Customer deposits, effective interest rate, savings accounts",
        "terseLabel": "Customer deposits, effective interest rate, savings accounts (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CustomerDepositsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CustomerDepositsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Customer deposits [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_CustomerLoyaltyProgramsLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "CustomerLoyaltyProgramsLiability",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of unredeemed customers loyalty points.",
        "label": "Customer Loyalty Programs Liability",
        "terseLabel": "Customer loyalty programs"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CustomerrelatedIntangibleAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "CustomerrelatedIntangibleAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Customer-related intangible assets [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets representing assets related to customers. Such assets may include customer lists, order or production backlog, customer contracts and related customer relationships as well as non-contractual customer relationships."
       }
      }
     },
     "auth_ref": [
      "r614"
     ]
    },
    "cyd_CybersecurityRiskBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r487",
      "r576"
     ]
    },
    "cyd_CybersecurityRiskBoardOfDirectorsOversightTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskBoardOfDirectorsOversightTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Board of Directors Oversight [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r487",
      "r576"
     ]
    },
    "cyd_CybersecurityRiskManagementExpertiseOfManagementResponsibleTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementExpertiseOfManagementResponsibleTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Expertise of Management Responsible [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r489",
      "r578"
     ]
    },
    "cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementPositionsOrCommitteesResponsibleFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Positions or Committees Responsible [Flag]"
       }
      }
     },
     "auth_ref": [
      "r489",
      "r578"
     ]
    },
    "cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleReportToBoardFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementPositionsOrCommitteesResponsibleReportToBoardFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]"
       }
      }
     },
     "auth_ref": [
      "r491",
      "r580"
     ]
    },
    "cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementPositionsOrCommitteesResponsibleTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Positions or Committees Responsible [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r489",
      "r578"
     ]
    },
    "cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r482",
      "r571"
     ]
    },
    "cyd_CybersecurityRiskManagementProcessesIntegratedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementProcessesIntegratedFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Processes Integrated [Flag]"
       }
      }
     },
     "auth_ref": [
      "r483",
      "r572"
     ]
    },
    "cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementProcessesIntegratedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Processes Integrated [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r483",
      "r572"
     ]
    },
    "cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementStrategyAndGovernanceAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management, Strategy, and Governance [Abstract]"
       }
      }
     },
     "auth_ref": [
      "r481",
      "r570"
     ]
    },
    "cyd_CybersecurityRiskManagementStrategyAndGovernanceLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementStrategyAndGovernanceLineItems",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management, Strategy, and Governance [Line Items]"
       }
      }
     },
     "auth_ref": [
      "r481",
      "r570"
     ]
    },
    "cyd_CybersecurityRiskManagementStrategyAndGovernanceTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementStrategyAndGovernanceTable",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management, Strategy, and Governance [Table]"
       }
      }
     },
     "auth_ref": [
      "r481",
      "r570"
     ]
    },
    "cyd_CybersecurityRiskManagementThirdPartyEngagedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskManagementThirdPartyEngagedFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Third Party Engaged [Flag]"
       }
      }
     },
     "auth_ref": [
      "r484",
      "r573"
     ]
    },
    "cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]"
       }
      }
     },
     "auth_ref": [
      "r486",
      "r575"
     ]
    },
    "cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r486",
      "r575"
     ]
    },
    "cyd_CybersecurityRiskProcessForInformingBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskProcessForInformingBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r487",
      "r576"
     ]
    },
    "cyd_CybersecurityRiskProcessForInformingManagementOrCommitteesResponsibleTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskProcessForInformingManagementOrCommitteesResponsibleTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r490",
      "r579"
     ]
    },
    "cyd_CybersecurityRiskRoleOfManagementTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskRoleOfManagementTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Role of Management [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r488",
      "r577"
     ]
    },
    "cyd_CybersecurityRiskThirdPartyOversightAndIdentificationProcessesFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2024",
     "localname": "CybersecurityRiskThirdPartyOversightAndIdentificationProcessesFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]"
       }
      }
     },
     "auth_ref": [
      "r485",
      "r574"
     ]
    },
    "country_DE": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "DE",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "GERMANY"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DebtInstrumentsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DebtInstrumentsHeld",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt instruments held",
        "terseLabel": "Debt instruments held"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of instruments representing indebtedness, including instruments called debt securities, held by the entity."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_DebtSecuritiesAtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DebtSecuritiesAtFairValueMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt securities at fair value [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt securities [member]",
        "terseLabel": "Debt securities"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for instruments held by the entity that represent indebtedness."
       }
      }
     },
     "auth_ref": [
      "r423",
      "r426"
     ]
    },
    "aval_DecommissioningCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecommissioningCost",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decommissioning cost",
        "label": "Decommissioning cost",
        "terseLabel": "Decommissioning cost"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseInEquityDueToChangeInValueOfUsd": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseInEquityDueToChangeInValueOfUsd",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskSensitivityAnalysisOfForeignExchangeEffectDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease in equity, 100 Colombian pesos per United States dollar.",
        "label": "Decrease in equity due to change in value of USD",
        "terseLabel": "Equity, decrease Ps.100 per U.S. dollar"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseInIntangibleAssetsOtherThanGoodwillDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseInIntangibleAssetsOtherThanGoodwillDiscontinuedOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease in intangible assets other than goodwill discontinued operations",
        "label": "Decrease in intangible assets other than goodwill discontinued operations",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseInProfitBeforeTaxDueToChangeInValueOfUsd": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseInProfitBeforeTaxDueToChangeInValueOfUsd",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskSensitivityAnalysisOfForeignExchangeEffectDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease in foreign exchange effect on profit before taxes, 100 Colombian pesos per United States dollar.",
        "label": "Decrease in profit before tax due to change in value of USD",
        "verboseLabel": "Profit and loss before taxes, decrease Ps.100 per U.S. dollar"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseInTangibleAssetsDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseInTangibleAssetsDiscontinuedOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease in tangible assets discontinued operations",
        "label": "Decrease in tangible assets, discontinued operations",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromDiscontinuedOperations",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease (increase) in net defined benefit liability (asset) resulting from discontinued operations.",
        "label": "Decrease (Increase) In Net Defined Benefit Liability (Asset) Resulting from Discontinued Operations",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromLiquidationOfEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromLiquidationOfEntities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease (increase) in net defined benefit liability (asset) resulting from liquidation of entities",
        "label": "Decrease (Increase) In Net Defined Benefit Liability (Asset) Resulting from Liquidation of Entities",
        "terseLabel": "Liquidation of entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromLossOfControlInSubsidiary": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromLossOfControlInSubsidiary",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease (increase) in net defined benefit liability (asset) resulting from loss of control in subsidiary.",
        "label": "Decrease (Increase) In Net Defined Benefit Liability (Asset) Resulting from Loss of Control In Subsidiary",
        "terseLabel": "Loss of control in subsidiary"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseThroughArrangementOfEntitiesIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseThroughArrangementOfEntitiesIntangibleAssetsOtherThanGoodwill",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease through arrangement of entities, intangible assets other than goodwill.",
        "label": "Decrease Through Arrangement of Entities, Intangible Assets Other Than Goodwill",
        "terseLabel": "Arrangement of entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseThroughAssetSoldAssetsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseThroughAssetSoldAssetsHeldForSale",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease through asset sold, assets held-for-sale",
        "label": "Decrease through asset sold, assets held-for-sale",
        "negatedLabel": "Assets sold, net"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DecreaseThroughDerecognitionFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DecreaseThroughDerecognitionFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease through derecognition, financial assets",
        "negatedLabel": "Financial assets that have been paid",
        "terseLabel": "Financial assets that have been derecognized/paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in financial assets resulting from derecognition. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r441",
      "r443",
      "r462"
     ]
    },
    "aval_DecreaseThroughEntityDeconsolidationFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseThroughEntityDeconsolidationFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease through entity deconsolidation, financial assets.",
        "label": "Decrease Through Entity Deconsolidation, Financial Assets",
        "terseLabel": "Entity deconsolidation"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DecreaseThroughLossOfControlOfSubsidiaryPropertyPlantAndEquipment",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease through loss of control of subsidiary, property, plant and equipment",
        "negatedLabel": "Loss of control in subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in property, plant and equipment resulting from the loss of control of a subsidiary. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryPropertyPlantAndEquipmentIncludingRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DecreaseThroughLossOfControlOfSubsidiaryPropertyPlantAndEquipmentIncludingRightofuseAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease through loss of control of subsidiary, property, plant and equipment including right-of-use assets",
        "negatedLabel": "Loss of control in subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in property, plant and equipment including right-of-use assets resulting from the loss of control of a subsidiary. [Refer: Property, plant and equipment including right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "aval_DecreaseThroughRecoveryForPartialPaymentsFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseThroughRecoveryForPartialPaymentsFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease through recovery for partial payments, financial assets",
        "label": "Decrease through recovery for partial payments, financial assets",
        "terseLabel": "Recovery for partial payments from the clients"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseThroughSaleFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseThroughSaleFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease through sale, financial assets.",
        "label": "Decrease Through Sale, Financial Assets",
        "terseLabel": "Sales of portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseThroughSaleOfImpairedLoansPortfolioCashFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseThroughSaleOfImpairedLoansPortfolioCashFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The decrease in financial assets resulting from sale of impaired cash loans portfolio.",
        "label": "Decrease Through Sale of Impaired Loans Portfolio, Cash, Financial Assets",
        "terseLabel": "Sale of loan portfolio - cash"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DecreaseThroughSaleOfImpairedLoansPortfolioLossAllowancesFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreaseThroughSaleOfImpairedLoansPortfolioLossAllowancesFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease through sale of impaired loans portfolio, loss allowances, financial assets.",
        "label": "Decrease Through Sale of Impaired Loans Portfolio, Loss Allowances, Financial Assets",
        "terseLabel": "Sale of loan portfolio - loss allowance"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DecreaseThroughWriteoffFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DecreaseThroughWriteoffFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease through write-off, financial assets",
        "negatedLabel": "Collections during the year",
        "negatedTerseLabel": "Write-offs",
        "terseLabel": "Write-offs"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in financial assets resulting from write-off. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r441",
      "r443",
      "r462"
     ]
    },
    "aval_DecreesEstablishedMinimumLeverageRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DecreesEstablishedMinimumLeverageRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrees established a minimum leverage ratio",
        "label": "Decrees Established A Minimum Leverage Ratio",
        "terseLabel": "Leverage ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredChargesAndOfIntangibleAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredChargesAndOfIntangibleAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred charges and of intangible assets.",
        "label": "Deferred charges and of intangible assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredCompensationArrangementWithIndividualDisclosurePostretirementBenefitsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredCompensationArrangementWithIndividualDisclosurePostretirementBenefitsTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of pension and other postretirement benefit arrangements with individual employees, which are generally based on employment contracts between the entity and one or more selected officers or key employees, and which contain a promise by the employer to pay certain amounts at designated future dates, usually including a period after retirement, upon compliance with stipulated requirements.",
        "label": "Deferred Compensation Arrangement with Individual Disclosure, Postretirement Benefits [Table Text Block]",
        "terseLabel": "Schedule of post-employment benefit expense"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredIncomeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred income [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredIncomeTaxRelatingHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsIncludedInOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredIncomeTaxRelatingHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsIncludedInOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred income tax relating hedges of net investments in foreign operations, derivative instruments, included in other comprehensive income",
        "label": "Deferred income tax relating hedges of net investments in foreign operations, derivative instruments, included in other comprehensive income",
        "negatedLabel": "Deferred tax (expense) income - Hedging derivatives in foreign currency"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredIncomeTaxRelatingToComponentsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredIncomeTaxRelatingToComponentsOfOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred income tax relating to components of other comprehensive income",
        "label": "Deferred income tax relating to components of other comprehensive income",
        "negatedLabel": "Deferred tax (expense) income",
        "negatedTerseLabel": "Deferred tax"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred income tax relating to components of other comprehensive income that will be reclassified to profit or loss",
        "label": "Deferred income tax relating to components of other comprehensive income that will be reclassified to profit or loss",
        "negatedLabel": "Deferred income tax relating to components of other comprehensive income that will be reclassified to profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredIncomeTaxRelatingToHedgingOfNonDerivativeInstrumentsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredIncomeTaxRelatingToHedgingOfNonDerivativeInstrumentsOfOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of deferred income tax relating to amounts recognised in other comprehensive income in relation to hedging of non-derivative instruments.",
        "label": "Deferred Income Tax Relating To Hedging of Non-derivative Instruments Of Other Comprehensive Income",
        "negatedLabel": "Deferred tax (expense) income - Hedging non-derivative instrument"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredIncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredIncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss",
        "label": "Deferred income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss",
        "negatedLabel": "Deferred tax (expense) income - Investment in associates and joint ventures"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DeferredTaxAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails": {
       "parentTag": "ifrs-full_DeferredTaxLiabilityAsset",
       "weight": -1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_IncomeTaxAssetsNet",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax assets",
        "terseLabel": "Deferred tax asset, balances on statement of financial position",
        "verboseLabel": "Deferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r23",
      "r28",
      "r73"
     ]
    },
    "ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DeferredTaxAssetsAndLiabilitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax assets and liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredTaxAssetsDeductionsFromRegulatoryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredTaxAssetsDeductionsFromRegulatoryCapital",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred tax assets, deductions from regulatory capital",
        "label": "Deferred tax assets, deductions from regulatory capital",
        "negatedLabel": "Deferred tax assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredTaxAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredTaxAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred tax assets [member]",
        "label": "Deferred tax assets [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredTaxExpenseIncomeAndAdjustmentsForDeferredTaxOfPriorPeriods": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredTaxExpenseIncomeAndAdjustmentsForDeferredTaxOfPriorPeriods",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of deferred tax expense (income) and adjustments for the deferred tax of prior periods.",
        "label": "Deferred tax expense (income) and adjustments for deferred tax of prior periods",
        "totalLabel": "Subtotal deferred taxes"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax expense (income) recognised in profit or loss",
        "negatedLabel": "Credited (charged) to profit or loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]"
       }
      }
     },
     "auth_ref": [
      "r74"
     ]
    },
    "ifrs-full_DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "aval_DeferredTaxExpenseIncomeAndAdjustmentsForDeferredTaxOfPriorPeriods",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax expense (income) relating to tax rate changes or imposition of new taxes",
        "verboseLabel": "Deferred taxes current period"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deferred tax expense or income relating to tax rate changes or the imposition of new taxes. [Refer: Deferred tax expense (income)]"
       }
      }
     },
     "auth_ref": [
      "r395"
     ]
    },
    "ifrs-full_DeferredTaxLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DeferredTaxLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_IncomeTaxLiabilitiesNet",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails": {
       "parentTag": "ifrs-full_DeferredTaxLiabilityAsset",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax liabilities",
        "negatedLabel": "Deferred tax liability, balances on statement of financial position",
        "verboseLabel": "Deferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts of income taxes payable in future periods in respect of taxable temporary differences. [Refer: Temporary differences [member]]"
       }
      }
     },
     "auth_ref": [
      "r23",
      "r28",
      "r73"
     ]
    },
    "aval_DeferredTaxLiabilitiesAssetDueToDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredTaxLiabilitiesAssetDueToDiscontinuedOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred tax (liabilities) asset due to discontinued operations",
        "label": "Deferred tax (liabilities) asset due to discontinued operations",
        "negatedLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredTaxLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredTaxLiabilitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred tax liabilities [member]",
        "label": "Deferred tax liabilities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DeferredTaxLiabilityAsset",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax liability (asset)",
        "negatedLabel": "Deferred tax (liability) asset, net",
        "negatedPeriodEndLabel": "Deferred tax (liabilities) assets at the end of the period",
        "negatedPeriodStartLabel": "Deferred tax (liabilities) assets at the beginning of the period",
        "negatedTotalLabel": "Net"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]"
       }
      }
     },
     "auth_ref": [
      "r73"
     ]
    },
    "aval_DeferredTaxLiabilityAssetOffset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredTaxLiabilityAssetOffset",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred tax (liability) asset, offset",
        "label": "Deferred tax (liability) asset, offset",
        "negatedLabel": "Deferred tax liability (asset), net, offset"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DeferredTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DeferredTaxRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred tax rate",
        "label": "Deferred tax rate",
        "terseLabel": "Deferred tax rate (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DefinedBenefitPlansAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DefinedBenefitPlansAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit plans [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r86"
     ]
    },
    "ifrs-full_DefinedBenefitPlansDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DefinedBenefitPlansDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit plans [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for post-employment benefit plans other than defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods. It also represents the standard value for the 'Defined benefit plans' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r86"
     ]
    },
    "ifrs-full_DepositsFromBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DepositsFromBanks",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Borrowings",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deposits from banks",
        "verboseLabel": "Interbank borrowings and overnight funds"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deposit liabilities from banks held by the entity."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_DepositsFromCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DepositsFromCustomers",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "definitionGuidance": "Customer Deposits",
        "label": "Deposits from customers",
        "terseLabel": "Deposits",
        "totalLabel": "Total customers deposits",
        "verboseLabel": "Customer deposits"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deposit liabilities from customers held by the entity."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_DepositsFromCustomersAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DepositsFromCustomersAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deposits from customers [abstract]",
        "verboseLabel": "Customer deposits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DepositsFromCustomersNoncurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DepositsFromCustomersNoncurrent",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of deposit liabilities from customers held by the entity due over twelve months.",
        "label": "Deposits From Customers Noncurrent",
        "terseLabel": "Deposits received"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DepreciationAndAmortisationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DepreciationAndAmortisationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Depreciation and amortisation expense",
        "negatedLabel": "Depreciation and amortization"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of depreciation and amortisation expense. Depreciation and amortisation are the systematic allocations of depreciable amounts of assets over their useful lives."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r63",
      "r230",
      "r361",
      "r370",
      "r386"
     ]
    },
    "ifrs-full_DepreciationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DepreciationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Depreciation expense",
        "negatedLabel": "Depreciation of tangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of depreciation expense. Depreciation is the systematic allocation of depreciable amounts of tangible assets over their useful lives."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_DepreciationOfPropertyPlantAndEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DepreciationOfPropertyPlantAndEquipmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Depreciation of property, plant and equipment [member]",
        "label": "Depreciation of property, plant and equipment [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DepreciationRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DepreciationRightofuseAssets",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Depreciation, right-of-use assets",
        "negatedLabel": "Depreciation right of use assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r263"
     ]
    },
    "aval_DepreciationTangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DepreciationTangibleAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of depreciation of tangible assets.",
        "label": "Depreciation, tangible assets",
        "negatedLabel": "Depreciation of the year charged against profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DerecognitionOfDisposalGroupAsInvestmentInAssociateOnDiscontinuance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DerecognitionOfDisposalGroupAsInvestmentInAssociateOnDiscontinuance",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Derecognition of Disposal Group as Investment in Associate On Discontinuance",
        "label": "Derecognition of Disposal Group as Investment in Associate, On Discontinuance",
        "terseLabel": "Derecognition of BAC Holding as an investment in associate"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativeFinancialAssetsHeldForHedging": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DerivativeFinancialAssetsHeldForHedging",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial assets held for hedging",
        "terseLabel": "Hedging derivative assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of derivative financial assets held for hedging. [Refer: Derivative financial assets]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_DerivativeFinancialAssetsHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DerivativeFinancialAssetsHeldForTrading",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial assets held for trading",
        "verboseLabel": "Derivative assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of derivative financial assets held for trading. [Refer: Derivative financial assets; Financial assets at fair value through profit or loss, classified as held for trading]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_DerivativeFinancialLiabilitiesHeldForHedging": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DerivativeFinancialLiabilitiesHeldForHedging",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial liabilities held for hedging",
        "terseLabel": "Hedging derivative liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of derivative financial liabilities held for hedging. [Refer: Derivative financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_DerivativeFinancialLiabilitiesHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DerivativeFinancialLiabilitiesHeldForTrading",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial liabilities held for trading",
        "terseLabel": "Trading liabilities",
        "verboseLabel": "Derivative liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of derivative financial liabilities held for trading. [Refer: Derivative financial liabilities; Financial liabilities at fair value through profit or loss that meet definition of held for trading]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_DerivativeInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DerivativeInstrumentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative instruments [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DerivativesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives [member]",
        "terseLabel": "Derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments or other contracts within the scope of IFRS 9 with all three of the following characteristics: (a) Their value changes in response to the change in a specified interest rate, financial instrument price, commodity price, foreign exchange rate, index of prices or rates, credit rating or credit index, or other variable, provided in the case of a non-financial variable that the variable is not specific to a party to the contract (sometimes called the \u2018underlying\u2019); (b) They require no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; (c) They are settled at a future date. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r423",
      "r426",
      "r448",
      "r467"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForBiologicalAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForBiologicalAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for biological assets [text block]",
        "terseLabel": "Description of accounting policy for biological assets [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for biological assets. [Refer: Biological assets]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForBorrowingCostsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForBorrowingCostsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for borrowing costs [text block]",
        "terseLabel": "Description of accounting policy for borrowing costs [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for interest and other costs that the entity incurs in connection with the borrowing of funds."
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for business combinations and goodwill [text block]",
        "terseLabel": "Description of accounting policy for business combinations and goodwill [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for business combinations and goodwill. [Refer: Total for all business combinations [member]; Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for derivative financial instruments and hedging [text block]",
        "terseLabel": "Description of accounting policy for derivative financial instruments and hedging [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for derivative financial instruments and hedging. [Refer: Classes of financial instruments [domain]; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForEarningsPerShareExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for earnings per share [text block]",
        "terseLabel": "Description of accounting policy for earnings per share [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for earnings per share."
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for employee benefits [text block]",
        "terseLabel": "Description of accounting policy for employee benefits [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for employee benefits. Employee benefits are all forms of consideration given by an entity in exchange for services rendered by employees or for the termination of employment."
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "aval_DescriptionOfAccountingPolicyForFinancialAssetsAndFinancialLiabilitiesPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DescriptionOfAccountingPolicyForFinancialAssetsAndFinancialLiabilitiesPolicyTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire description of financial assets and financial liabilities.",
        "label": "Description of Accounting Policy For Financial Assets and Financial Liabilities [Policy Text Block]",
        "terseLabel": "Description of Accounting Policy For Financial Assets and Financial Liabilities [Policy Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for financial guarantees [text block]",
        "terseLabel": "Description of accounting policy for financial guarantees [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for financial guarantees. [Refer: Guarantees [member]]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for financial liabilities [text block]",
        "terseLabel": "Description of accounting policy for financial liabilities [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for foreign currency translation [text block]",
        "terseLabel": "Description of accounting policy for foreign currency translation [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for foreign currency translation."
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for functional currency [text block]",
        "terseLabel": "Description of accounting policy for functional currency [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for the currency of the primary economic environment in which the entity operates."
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for impairment of non-financial assets [text block]",
        "terseLabel": "Description of accounting policy for impairment of non-financial assets [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for the impairment of non-financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForIncomeTaxExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for income tax [text block]",
        "terseLabel": "Description of accounting policy for income tax [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for income tax."
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for intangible assets other than goodwill [text block]",
        "terseLabel": "Description of accounting policy for intangible assets other than goodwill [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for intangible assets other than goodwill. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for investment in associates and joint ventures [text block]",
        "terseLabel": "Description of accounting policy for investment in associates and joint ventures [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for investment in associates and joint ventures. [Refer: Total for all associates [member]; Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for investment property [text block]",
        "terseLabel": "Description of accounting policy for investment property [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForLeasesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for leases [text block]",
        "terseLabel": "Description of accounting policy for leases [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for leases. A lease is an agreement whereby the lessor conveys to the lessee in return for a payment or series of payments the right to use an asset for an agreed period of time."
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "aval_DescriptionOfAccountingPolicyForLoansPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DescriptionOfAccountingPolicyForLoansPolicyTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The description of the entity's accounting policy for loans.",
        "label": "Description of accounting policy for loans [policy text block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for non-current assets or disposal groups classified as held for sale and discontinued operations [text block]",
        "terseLabel": "Description of accounting policy for non-current assets or disposal groups classified as held for sale and discontinued operations [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for non-current assets or disposal groups classified as held for sale and discontinued operations. [Refer: Discontinued operations [member]; Non-current assets or disposal groups classified as held for sale]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "aval_DescriptionOfAccountingPolicyForOperatingSegmentsPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DescriptionOfAccountingPolicyForOperatingSegmentsPolicyTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire explanation relating to changes in operating segments.",
        "label": "Description of Accounting Policy for Operating segments [Policy Text Block]",
        "terseLabel": "Description of Accounting Policy for Operating segments [Policy Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for property, plant and equipment [text block]",
        "terseLabel": "Description of accounting policy for property, plant and equipment [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForProvisionsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for provisions [text block]",
        "terseLabel": "Description of accounting policy for provisions [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for provisions. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForRecognitionOfRevenue",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for recognition of revenue [text block]",
        "terseLabel": "Description of accounting policy for recognition of revenue [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for recognising revenue. [Refer: Revenue]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForRestrictedCashAndCashEquivalentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForRestrictedCashAndCashEquivalentsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for restricted cash and cash equivalents [text block]",
        "terseLabel": "Description of accounting policy for restricted cash and cash equivalents [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for restricted cash and cash equivalents. [Refer: Restricted cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForServiceConcessionArrangementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForServiceConcessionArrangementsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for service concession arrangements [text block]",
        "terseLabel": "Description of accounting policy for service concession arrangements [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for service concession arrangements. [Refer: Service concession arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r591"
     ]
    },
    "aval_DescriptionOfAccountingPolicyForTradingAssetsAndLiabilitiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DescriptionOfAccountingPolicyForTradingAssetsAndLiabilitiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The description of the entity's accounting policy for trading assets and liabilities.",
        "label": "Description Of Accounting Policy For Trading Assets And Liabilities [Text Block]",
        "terseLabel": "Description Of Accounting Policy For Trading Assets And Liabilities [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DescriptionOfDetailedInformationAboutInvestmentsSubjectToValueAtRiskTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DescriptionOfDetailedInformationAboutInvestmentsSubjectToValueAtRiskTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The description of detailed information about investments subject to value at risk.",
        "label": "Description of detailed information about investments subject to value at risk [Text Block]",
        "terseLabel": "Disclosure of breaks down our investments subject to regulatory VaR"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfDiscountRatesAppliedToCashFlowProjections",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discount rate applied to cash flow projections",
        "terseLabel": "Discount interest rate after taxes"
       }
      },
      "en": {
       "role": {
        "documentation": "The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]]"
       }
      }
     },
     "auth_ref": [
      "r147",
      "r151"
     ]
    },
    "ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of expected impact of initial application of new standards or interpretations [text block]",
        "terseLabel": "Disclosure of expected impact of initial application of new standards or interpretations [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the known or reasonably estimable information relevant to assessing the possible impact that the application of a new IFRS, that has been issued but is not yet effective, will have."
       }
      }
     },
     "auth_ref": [
      "r202"
     ]
    },
    "ifrs-full_DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Growth rate used to extrapolate cash flow projections",
        "terseLabel": "Growth rate used to extrapolate cash flow projections"
       }
      },
      "en": {
       "role": {
        "documentation": "The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]]"
       }
      }
     },
     "auth_ref": [
      "r146",
      "r150"
     ]
    },
    "ifrs-full_DescriptionOfMethodsUsedToMeasureFairValueOfNoncashAssetsDeclaredForDistributionToOwnersBeforeFinancialStatementsAuthorisedForIssue": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfMethodsUsedToMeasureFairValueOfNoncashAssetsDeclaredForDistributionToOwnersBeforeFinancialStatementsAuthorisedForIssue",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails",
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of methods used to measure fair value of non-cash assets declared for distribution to owners before financial statements authorised for issue",
        "verboseLabel": "Declared dividends information"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of methods used to measure the fair value of non-cash assets declared to be distributed as a dividend, when the declaration date is after the end of the reporting period but before the financial statements are authorised for issue. [Refer: Non-cash assets declared for distribution to owners before financial statements authorised for issue]"
       }
      }
     },
     "auth_ref": [
      "r204"
     ]
    },
    "ifrs-full_DescriptionOfVoluntaryChangeInAccountingPolicy": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DescriptionOfVoluntaryChangeInAccountingPolicy",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of voluntary change in accounting policy [text block]",
        "terseLabel": "BASIS OF PREPARATION OF THE CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF MATERIAL ACCOUNTING POLICIES"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of a voluntary change in accounting policy."
       }
      }
     },
     "auth_ref": [
      "r201"
     ]
    },
    "ifrs-full_DilutedEarningsLossPerInstrumentFromContinuingOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DilutedEarningsLossPerInstrumentFromContinuingOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted earnings (loss) per instrument from continuing operations, participating equity instruments other than ordinary shares",
        "terseLabel": "Diluted earnings per ADS (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Diluted earnings (loss) per instrument from continuing operations for an equity instrument that participates in profit with ordinary shares according to a predetermined formula. [Refer: Diluted earnings (loss) per instrument, participating equity instruments other than ordinary shares; Continuing operations, unless line item indicates otherwise [member]]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_DilutedEarningsLossPerInstrumentFromDiscontinuedOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DilutedEarningsLossPerInstrumentFromDiscontinuedOperationsParticipatingEquityInstrumentsOtherThanOrdinaryShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted earnings (loss) per instrument from discontinued operations, participating equity instruments other than ordinary shares",
        "verboseLabel": "Diluted earnings per ADS (3) (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Diluted earnings (loss) per instrument from discontinued operations for an equity instrument that participates in profit with ordinary shares according to a predetermined formula. [Refer: Diluted earnings (loss) per instrument, participating equity instruments other than ordinary shares; Discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_DilutedEarningsLossPerInstrumentParticipatingEquityInstrumentsOtherThanOrdinaryShares": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DilutedEarningsLossPerInstrumentParticipatingEquityInstrumentsOtherThanOrdinaryShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted earnings (loss) per instrument, participating equity instruments other than ordinary shares",
        "verboseLabel": "Diluted earnings per ADS in Colombian pesos"
       }
      },
      "en": {
       "role": {
        "documentation": "Diluted earnings (loss) per instrument for an equity instrument that participates in profit with ordinary shares according to a predetermined formula."
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_DilutedEarningsLossPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DilutedEarningsLossPerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted earnings (loss) per share",
        "terseLabel": "Net income per share diluted (in Colombian pesos, see note 25.3)",
        "verboseLabel": "Diluted earnings per share to common shareholders (pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r131",
      "r132"
     ]
    },
    "ifrs-full_DilutedEarningsLossPerShareFromContinuingOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DilutedEarningsLossPerShareFromContinuingOperations",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted earnings (loss) per share from continuing operations",
        "terseLabel": "Diluted earnings per share to common shareholders (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Diluted earnings (loss) per share from continuing operations. [Refer: Continuing operations, unless line item indicates otherwise [member]; Diluted earnings (loss) per share]"
       }
      }
     },
     "auth_ref": [
      "r131",
      "r132"
     ]
    },
    "ifrs-full_DilutedEarningsLossPerShareFromDiscontinuedOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DilutedEarningsLossPerShareFromDiscontinuedOperations",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted earnings (loss) per share from discontinued operations",
        "terseLabel": "Net income per share diluted (in Colombian pesos, see note 25.3 \"Earnings per share\").",
        "verboseLabel": "Diluted earnings per share to common shareholders (in Colombian pesos)"
       }
      },
      "en": {
       "role": {
        "documentation": "Diluted earnings (loss) per share from discontinued operations. [Refer: Diluted earnings (loss) per share; Discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r132",
      "r133"
     ]
    },
    "ifrs-full_DirectOperatingExpenseFromInvestmentPropertyGeneratingRentalIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DirectOperatingExpenseFromInvestmentPropertyGeneratingRentalIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_RentalIncomeFromInvestmentPropertyNetOfDirectOperatingExpense",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Direct operating expense from investment property generating rental income",
        "negatedLabel": "Direct operating expenses deriving from property investments which create income from rent"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of direct operating expenses (including repairs and maintenance) arising from investment property that generated rental income during the period recognised in profit or loss. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r181"
     ]
    },
    "ifrs-full_DirectOperatingExpenseFromInvestmentPropertyNotGeneratingRentalIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DirectOperatingExpenseFromInvestmentPropertyNotGeneratingRentalIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_RentalIncomeFromInvestmentPropertyNetOfDirectOperatingExpense",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Direct operating expense from investment property not generating rental income",
        "negatedLabel": "Direct operating expenses deriving from property investments which do not create income from rent"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of direct operating expenses (including repairs and maintenance) arising from investment property that did not generate rental income during the period recognised in profit or loss. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r182"
     ]
    },
    "ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAccountingJudgementsAndEstimatesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureJudgmentsAndCriticalAccountingEstimatesInApplyingAccountingPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of accounting judgements and estimates [text block]",
        "terseLabel": "JUDGMENTS AND CRITICAL ACCOUNTING ESTIMATES IN APPLYING ACCOUNTING POLICIES"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of judgements that management has made in the process of applying the entity's accounting policies that have the most significant effect on amounts recognised in the financial statements along with information about the assumptions that the entity makes about the future, and other major sources of estimation uncertainty at the end of the reporting period, that have a significant risk of resulting in a material adjustment to the carrying amounts of assets and liabilities within the next year. [Refer: Carrying amount [member]]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfAccountingJudgementsAndEstimatesExplanatoryAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfAccountingJudgementsAndEstimatesExplanatoryAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of accounting judgements and estimates explanatory [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfAccountingPolicyForNonvotingRightsOfPreferredSharesExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfAccountingPolicyForNonvotingRightsOfPreferredSharesExplanatoryTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The description of the entity's accounting policy related to non-voting rights of preferred shares.",
        "label": "Disclosure Of Accounting Policy For Nonvoting Rights Of Preferred Shares Explanatory [Text Block]",
        "terseLabel": "Disclosure Of Accounting Policy For Nonvoting Rights Of Preferred Shares Explanatory [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfAccountsPayableAndOtherLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfAccountsPayableAndOtherLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of accounts payable and other liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of accrued expenses and other liabilities [text block]",
        "terseLabel": "Disclosure of accounts payable and other liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of accrued expenses and other liabilities. [Refer: Accruals; Other liabilities]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAllowanceForCreditLossesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of allowance for credit losses [text block]",
        "terseLabel": "Disclosure of loss allowance"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the allowance relating to impairments of financial assets due to credit losses. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of other comprehensive income by item [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure of the analysis of other comprehensive income by item."
       }
      }
     },
     "auth_ref": [
      "r7"
     ]
    },
    "ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of other comprehensive income by item [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of other comprehensive income by item [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the analysis of other comprehensive income by item."
       }
      }
     },
     "auth_ref": [
      "r7"
     ]
    },
    "ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of single amount of discontinued operations [text block]",
        "terseLabel": "Schedule of discontinued operations"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the analysis of the single amount of discontinued operations. [Refer: Discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r295"
     ]
    },
    "ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of single amount of discontinued operations [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of single amount of discontinued operations [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the analysis of the single amount of discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r295"
     ]
    },
    "aval_DisclosureOfAssetsAndLiabilitiesExposedToTradingRiskTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfAssetsAndLiabilitiesExposedToTradingRiskTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about financial assets and liabilities exposed to trading risk.",
        "label": "Disclosure of assets and liabilities exposed to trading risk [Text Block]",
        "terseLabel": "Disclosure of credit rating in trading derivatives and hedge derivatives"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfBalanceOfAssetsInConcessionAgreementsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfBalanceOfAssetsInConcessionAgreementsTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of balance of assets in concession agreements.",
        "label": "Disclosure of balance of assets in concession agreements [table text block]",
        "terseLabel": "Schedule of balance of assets in concession arrangements"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfBalancesOfInvestmentSecuritiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfBalancesOfInvestmentSecuritiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of balances of investment securities.",
        "label": "Disclosure Of Balances Of Investment Securities [Table Text Block]",
        "terseLabel": "Balances of investment securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfBalancesOfTradingAssetsAndLiabilitiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfBalancesOfTradingAssetsAndLiabilitiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of balances of trading assets and liabilities.",
        "label": "Disclosure Of Balances Of Trading Assets And Liabilities [Table Text Block]",
        "terseLabel": "Balances of trading asset and liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfBasisOfConsolidationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfBasisOfConsolidationExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of basis of consolidation [text block]",
        "terseLabel": "Disclosure of basis of consolidation [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the basis used for consolidation."
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfBreakDownOfFinancialAssetsAndLiabilitiesExposedToTradingRiskTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfBreakDownOfFinancialAssetsAndLiabilitiesExposedToTradingRiskTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of information relating to break down of financial assets and liabilities exposed to trading risk.",
        "label": "Disclosure of Break Down of Financial Assets and Liabilities Exposed to Trading Risk [Table Text Block]",
        "terseLabel": "Disclosure of breakdown of financial assets and liabilities exposed to trading risk held"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfBreakdownOfInterestBearingAssetsAndLiabilitiesByInterestRateTypeAndMaturityTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfBreakdownOfInterestBearingAssetsAndLiabilitiesByInterestRateTypeAndMaturityTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of breakdown of interest bearing assets and liabilities, by interest rate type and by maturity.",
        "label": "Disclosure of Breakdown of Interest Bearing Assets and Liabilities, by Interest Rate Type and Maturity [Table Text Block]",
        "terseLabel": "Disclosure of breakdown of non-interest-bearing and interest-bearing assets and liabilities by interest rate type and by maturity"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfBusinessCombinationsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfBusinessCombinationsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about business combination [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfBusinessCombinationsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfBusinessCombinationsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about business combination [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of business combinations."
       }
      }
     },
     "auth_ref": [
      "r286"
     ]
    },
    "aval_DisclosureOfCashAndCashEquivalentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCashAndCashEquivalentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of cash and cash equivalents [abstract]",
        "label": "Disclosure of cash and cash equivalents [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCashAndCashEquivalentsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalents"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of cash and cash equivalents [text block]",
        "terseLabel": "CASH AND CASH EQUIVALENTS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of cash and cash equivalents. [Refer: Cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfCashAndCashEquivalentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCashAndCashEquivalentsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of cash and cash equivalents [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfCashAndCashEquivalentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCashAndCashEquivalentsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of cash and cash equivalents [table]",
        "label": "Disclosure of cash and cash equivalents [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfChangesInGrossCarryingAmountTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfChangesInGrossCarryingAmountTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of changes in the gross carrying amount of the loan portfolio.",
        "label": "Disclosure of Changes in Gross Carrying Amount [Table Text Block]",
        "terseLabel": "Disclosure of reconciliations of gross carrying amount"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of classes of share capital [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of classes of share capital [text block]",
        "terseLabel": "Schedule of authorized, issued and outstanding shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of classes of share capital. [Refer: Classes of share capital [domain]]"
       }
      }
     },
     "auth_ref": [
      "r39"
     ]
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of classes of share capital [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of classes of share capital [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to classes of share capital."
       }
      }
     },
     "auth_ref": [
      "r39"
     ]
    },
    "aval_DisclosureOfCommitmentsAndContingenciesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCommitmentsAndContingenciesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of commitments and contingencies [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingencies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of commitments and contingent liabilities [text block]",
        "terseLabel": "COMMITMENTS AND CONTINGENCIES"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of commitments and contingent liabilities. [Refer: Classes of contingent liabilities [domain]]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfConcessionContractsGrantedToSubsidiariesAndOtherRelatedPartiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfConcessionContractsGrantedToSubsidiariesAndOtherRelatedPartiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The summary of main concession contracts granted to subsidiaries and other related parties.",
        "label": "Disclosure of concession contracts granted to subsidiaries and other related parties [table text block]",
        "terseLabel": "Schedule of main concession contracts granted"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatoryAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatoryAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of consolidated and separate financial statements explanatory [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfContingentLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfContingentLiabilitiesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of contingent liabilities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfContingentLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfContingentLiabilitiesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of contingent liabilities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to contingent liabilities."
       }
      }
     },
     "auth_ref": [
      "r162"
     ]
    },
    "ifrs-full_DisclosureOfCostOfSalesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCostOfSalesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of cost of sales [text block]",
        "terseLabel": "Schedule of incomes and cost for goods and services"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the cost of sales. [Refer: Cost of sales]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfCreditRiskCategoriesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCreditRiskCategoriesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The description of each credit risk category.",
        "label": "Disclosure Of Credit Risk Categories [Table Text Block]",
        "terseLabel": "Disclosure of each credit risk category"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCreditRiskExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk [text block]",
        "terseLabel": "Disclosure of credit quality of financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of credit risk. [Refer: Credit risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r354",
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfCreditRiskExposureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCreditRiskExposureExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [text block]",
        "terseLabel": "Disclosure of credit risk exposure"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the credit risk exposure. Credit risk exposure is the credit risk inherent in an entity\u2019s financial assets and commitments to extend credit."
       }
      }
     },
     "auth_ref": [
      "r337"
     ]
    },
    "ifrs-full_DisclosureOfCreditRiskExposureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCreditRiskExposureTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the credit risk exposure."
       }
      }
     },
     "auth_ref": [
      "r337"
     ]
    },
    "aval_DisclosureOfCreditRiskMonitoringDataTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCreditRiskMonitoringDataTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of credit risk monitoring data.",
        "label": "Disclosure Of Credit Risk Monitoring Data [Table Text Block]",
        "terseLabel": "Disclosure of each exposure to a credit risk grade"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfCustomerDepositsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCustomerDepositsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of customer deposits [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfCustomerDepositsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCustomerDepositsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of customer deposits [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfCustomerDepositsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfCustomerDepositsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of customer deposits [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDeferredTaxesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDeferredTaxesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of deferred taxes [text block]",
        "terseLabel": "Schedule of offsets deferred tax assets and liabilities by entity and tax authority"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of deferred taxes. [Refer: Deferred tax liabilities; Deferred tax assets]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefits"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [text block]",
        "terseLabel": "EMPLOYEE BENEFITS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of defined benefit plans. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r86"
     ]
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to defined benefit plans."
       }
      }
     },
     "auth_ref": [
      "r86"
     ]
    },
    "aval_DisclosureOfDefinedBenefitsPlansExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDefinedBenefitsPlansExplanatoryTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of defined benefits plans explanatory",
        "label": "Disclosure Of Defined Benefits Plans Explanatory [Text Block]",
        "verboseLabel": "Schedule of balance of liabilities for employee benefits"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDepositaryReceiptsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDepositaryReceiptsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of depositary receipts [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDepositaryReceiptsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDepositaryReceiptsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of depositary receipts [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information about depositary receipts."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_DisclosureOfDepositsFromCustomersExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDepositsFromCustomersExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDeposits"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of deposits from customers [text block]",
        "terseLabel": "CUSTOMER DEPOSITS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of deposits from customers. [Refer: Deposits from customers]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfDepositsFromFinancialObligationsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDepositsFromFinancialObligationsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of deposits from financial obligations [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailInformationOfVariablesUsedToCalculateObligationTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailInformationOfVariablesUsedToCalculateObligationTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of detailed information about variables used to calculate obligations.",
        "label": "Disclosure Of Detail Information Of Variables Used To Calculate Obligation [Text Block]",
        "verboseLabel": "Schedule of assumptions used to calculate the obligation projected for different post-employment benefits employees"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutBalancesWithRelatedPartiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutBalancesWithRelatedPartiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about balances with related parties.",
        "label": "Disclosure of detailed information about balances with related parties [text block]",
        "verboseLabel": "Schedule of balances with related parties"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutBondIssuedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutBondIssuedTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about bond issued.",
        "label": "Disclosure of detailed information about Bond Issued [Text Block]",
        "verboseLabel": "Schedule of issued bonds"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutBorrowingExplanatoryAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingExplanatoryAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about borrowing explanatory [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about borrowings [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about borrowings [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of borrowings."
       }
      }
     },
     "auth_ref": [
      "r630"
     ]
    },
    "aval_DisclosureOfDetailedInformationAboutBreakdownByContractualUndiscountedCashFlowsOfFinancialAssetsAndLiabilitiesIncludingProjectedContractualInterestReceivableAndPayableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutBreakdownByContractualUndiscountedCashFlowsOfFinancialAssetsAndLiabilitiesIncludingProjectedContractualInterestReceivableAndPayableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about the breakdown by contractual undiscounted cash flows of the financial assets and liabilities including projected contractual interest receivable and payable.",
        "label": "Disclosure of detailed information about the breakdown by contractual undiscounted cash flows of the financial assets and liabilities including projected contractual interest receivable and payable [Text Block]",
        "terseLabel": "Disclosure of flows of the financial assets and liabilities including contractual interest receivable and payable"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutBreakdownByTimeBandsOfLiquidAssetsAndLiquidityRiskIndicatorTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutBreakdownByTimeBandsOfLiquidAssetsAndLiquidityRiskIndicatorTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about the breakdown by time bands of the Liquid Assets and the Liquidity Risk Indicator.",
        "label": "Disclosure of detailed information about the breakdown by time bands of the Liquid Assets and the Liquidity Risk Indicator [Text Block]",
        "terseLabel": "Disclosure of breakdown of the liquid assets by maturity"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutCalculationOfMinimumRegulatoryCapitalTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutCalculationOfMinimumRegulatoryCapitalTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about the calculation of the minimum regulatory capital.",
        "label": "Disclosure Of Detailed Information About Calculation Of Minimum Regulatory Capital [Table Text Block]",
        "terseLabel": "Disclosure of subsidiaries complied with the minimum regulatory capital requirements"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutCashAndCashEquivalentsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutCashAndCashEquivalentsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about disclosure of cash and cash equivalents.",
        "label": "Disclosure of detailed information about cash and cash equivalents [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutChangesInLevel3FairvalueCategory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutChangesInLevel3FairvalueCategory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about Changes in Level 3 Fair-Value Category.",
        "label": "Disclosure of detailed information about changes in level 3 Fairvalue Category",
        "verboseLabel": "Disclosure of detailed information about Changes in Level 3 Fair-Value Category [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutClassificationOfLoanPortfolioByTypeOfCurrencyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutClassificationOfLoanPortfolioByTypeOfCurrencyTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about classification of loan portfolio by type of currency.",
        "label": "Disclosure of detailed information about classification of loan portfolio by type of currency [Text Block]",
        "terseLabel": "Disclosure of classification of loan portfolio by type of currency"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutCommissionsAndFeesOfContractsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutCommissionsAndFeesOfContractsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Disclosure of detailed information about about commissions and fees of contracts.",
        "label": "Disclosure of detailed information about commissions and fees of contracts [Text block]",
        "terseLabel": "Schedule of income and expenses for commissions and fees"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutCommitmentsInUnusedLinesOfCreditTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutCommitmentsInUnusedLinesOfCreditTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about commitments in unused lines of credit",
        "label": "Disclosure Of Detailed Information About Commitments In Unused Lines Of Credit [Text Block]",
        "terseLabel": "Disclosure of detail of the guarantees, letters of credit and credit commitments on non-used credit lines NOT USED IN 2024 20-F"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutComponentsOfAccumulatedOtherComprehensiveIncomeTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutComponentsOfAccumulatedOtherComprehensiveIncomeTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about components of accumulated other comprehensive income.",
        "label": "Disclosure of detailed information about components of accumulated other comprehensive income [Table Text Block]",
        "terseLabel": "Schedule of components of accumulated other comprehensive income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutContractAssetsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutContractAssetsTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about contract assets.",
        "label": "Disclosure of Detailed Information About Contract Assets [Table Text Block]",
        "terseLabel": "Disclosure of detailed information about contract assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutCreditCommitmentsByCurrencyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutCreditCommitmentsByCurrencyTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about credit commitments by currency.",
        "label": "Disclosure Of Detailed Information About Credit Commitments By Currency [Text Block]",
        "terseLabel": "Disclosure of guarantees, letters of credit and credit commitments on non-used credit lines"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutDepositsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutDepositsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about deposits.",
        "label": "Disclosure of detailed information about deposits [Text Block]",
        "terseLabel": "Schedule of the balances of the deposits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsForHedgingTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about derivative financial instruments held for hedging.",
        "label": "Disclosure of detailed information about derivative financial instruments for hedging [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutDistributionOfCreditPortfolioTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutDistributionOfCreditPortfolioTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about distribution of the credit portfolio.",
        "label": "Disclosure of detailed information about distribution of the credit portfolio [Text Block]",
        "terseLabel": "Disclosure of detailed information about distribution of the credit portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutDistributionOfLoansPortfolioByMaturityPeriodTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutDistributionOfLoansPortfolioByMaturityPeriodTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about distribution of loans portfolio by maturity period.",
        "label": "Disclosure of detailed information about distribution of loans portfolio by maturity period [Text Block]",
        "terseLabel": "Disclosure of detailed information about distribution of loans portfolio by maturity period"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutEffectiveInterestRatesWhichAreAccruedOnCustomerDepositsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutEffectiveInterestRatesWhichAreAccruedOnCustomerDepositsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about the effective interest rates which are accrued on customer deposits.",
        "label": "Disclosure of detailed information about the effective interest rates which are accrued on customer deposits [Text Block]",
        "terseLabel": "Schedule of the effective interest rates which are accrued on customer deposits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutEffectsOfCurrentAndDeferredIncomeTaxesInEachComponentOfOtherComprehensiveIncomeTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutEffectsOfCurrentAndDeferredIncomeTaxesInEachComponentOfOtherComprehensiveIncomeTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about the effects of the current and deferred income taxes in each component of Other Comprehensive Income.",
        "label": "Disclosure of detailed information about the effects of the current and deferred income taxes in each component of Other Comprehensive Income [Text Block]",
        "terseLabel": "Schedule effects of the current and deferred taxes in each component of other comprehensive income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutFinancialAssetsAndLiabilitiesAccountedAtAmortizedCostAndValuedAtFairValueOnlyForPurposesOfThisDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutFinancialAssetsAndLiabilitiesAccountedAtAmortizedCostAndValuedAtFairValueOnlyForPurposesOfThisDisclosureTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about financial assets and liabilities accounted at amortized cost and valued at fair value only for purposes of this disclosure.",
        "label": "Disclosure Of Detailed Information About Financial Assets And Liabilities Accounted At Amortized Cost And Valued At Fair Value Only For Purposes Of This Disclosure Text Block",
        "terseLabel": "Disclosure of detailed information about financial assets and liabilities accounted at amortized cost and valued at fair value only for purposes of this disclosure [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutFinancialInformationOfNoncontrollingInterestTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutFinancialInformationOfNoncontrollingInterestTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about financial information of non-controlling interest.",
        "label": "Disclosure of detailed information about financial information of noncontrolling interest [Text Block]",
        "terseLabel": "Schedule of information regarding the non-controlling interest of each direct subsidiary"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskByTypeTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskByTypeTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information on various risks associated with the financial subsidiaries.",
        "label": "Disclosure of Detailed Information about Financial Subsidiaries Risk by Type [Text Block]",
        "terseLabel": "Disclosure of VaR calculation relating to each of the risk factors"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutFinancialSubsidiariesRiskTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information on risk associated with the financial subsidiaries.",
        "label": "Disclosure of Detailed Information about Financial Subsidiaries Risk [Text Block]",
        "terseLabel": "Disclosure of market value-at-risk (VaR) for subsidiaries"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutFluctuationInForeignExchangeRatesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutFluctuationInForeignExchangeRatesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about fluctuation in foreign exchange rates.",
        "label": "Disclosure of detailed information about fluctuation in foreign exchange rates [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutForeignCurrencyAssetsAndLiabilitiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutForeignCurrencyAssetsAndLiabilitiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about assets and liabilities held in foreign currencies.",
        "label": "Disclosure of Detailed Information about Foreign Currency Assets and Liabilities [Text Block]",
        "terseLabel": "Disclosure of foreign currency assets and liabilities are in U.S. dollars and foreign currencies"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutFutureMaturitiesOfBondsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutFutureMaturitiesOfBondsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about the disclosure of future maturities of bonds.",
        "label": "Disclosure of detailed information About Future Maturities of Bonds [Text Block]",
        "terseLabel": "Schedule of reconciliation of movements of liabilities to cash flows arising from financing activities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutGrossInvestmentAndNetInvestmentInFinancialLeasingContractsReceivableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutGrossInvestmentAndNetInvestmentInFinancialLeasingContractsReceivableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about gross investment and net investment in financial leasing contracts receivable.",
        "label": "Disclosure of detailed information about gross investment and net investment in financial leasing contracts receivable [Text Block]",
        "terseLabel": "Disclosure of detailed information about gross investment and net investment in financial leasing contracts receivable"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutHedgeInForeignCurrencyEquityInvestmentsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutHedgeInForeignCurrencyEquityInvestmentsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about hedge in foreign currency equity investments.",
        "label": "Disclosure of detailed information about hedge in foreign currency equity investments [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedging instruments [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about hedging instruments. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r315"
     ]
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedging instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedging instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of hedging instruments."
       }
      }
     },
     "auth_ref": [
      "r315"
     ]
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about intangible assets [text block]",
        "terseLabel": "Schedule of movements of the main concession arrangements under intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about intangible assets. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "aval_DisclosureOfDetailedInformationAboutInterestIncomeByPortfolioTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutInterestIncomeByPortfolioTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about interest income by portfolio.",
        "label": "Disclosure of Detailed Information About Interest Income by Portfolio [Table Text Block]",
        "terseLabel": "Disclosure of detailed information about interest income by portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentInAssociatesAndJointVenturesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about investment in associates and joint ventures.",
        "label": "Disclosure of detailed information about investment in associates and joint ventures [text block]",
        "terseLabel": "Disclosure of investments in associates and joint ventures"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesByLocationTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesByLocationTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of investment in debt securities by location.",
        "label": "Disclosure of Detailed Information about Investment in Debt Securities by Location [Table Text Block]",
        "terseLabel": "Disclosure of investments in debt securities by location"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesBySectorTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesBySectorTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure about investment in debt securities by sector.",
        "label": "Disclosure of Detailed Information about Investment in Debt Securities by Sector [Table Text Block]",
        "terseLabel": "Disclosure of balance of financial assets in investments debt securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesBySovereignRiskTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentInDebtSecuritiesBySovereignRiskTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of investment in debt securities by sovereign risk.",
        "label": "Disclosure of Detailed Information about Investment in Debt Securities by Sovereign Risk [Table Text Block]",
        "terseLabel": "Disclosure of detail of sovereign debt portfolio issued by Central Governments per country"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about investment property [text block]",
        "terseLabel": "Schedule of investment properties"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r179"
     ]
    },
    "aval_DisclosureOfDetailedInformationAboutInvestmentsHeldToMaturityTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsHeldToMaturityTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about investments held to maturity.",
        "label": "Disclosure of detailed information about investments held to maturity [Text Block]",
        "terseLabel": "Investments in debt securities at amortized cost"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutLiabilitiesWithGroupsOfAssetsHeldForSaleTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutLiabilitiesWithGroupsOfAssetsHeldForSaleTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about disclosure of movement of the non-current assets held for sale.",
        "label": "Disclosure Of Detailed Information About Liabilities With Groups Of Assets Held For Sale [Text Block]",
        "terseLabel": "Schedule of the detail of associated liabilities to assets held for sale"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutMainPremisesUsedInImpairmentTestReportsTakenAsBasisForImpairmentTestingTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutMainPremisesUsedInImpairmentTestReportsTakenAsBasisForImpairmentTestingTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about main premises used in the impairment test reports taken as the basis for impairment testing.",
        "label": "Disclosure of detailed information about main premises used in impairment test reports taken as basis for impairment testing [Text Block]",
        "terseLabel": "Summary of main assumptions used in the impairment test reports taken as the basis for impairment testing"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutMainPremisesUsedInLatestImpairmentTestsOfCashGeneratingUnitsWithAllocatedGoodwillTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutMainPremisesUsedInLatestImpairmentTestsOfCashGeneratingUnitsWithAllocatedGoodwillTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about main premises used in latest impairment tests of cash-generating units with allocated goodwill.",
        "label": "Disclosure Of Detailed Information About Main Premises Used In Latest Impairment Tests Of Cash Generating Units With Allocated Goodwill Text Block",
        "terseLabel": "Schedule of main assumptions used in the latest impairment tests of the groups of cash-generating units with allocated goodwill"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutMovementOfInvestmentsInAssociatesAndJointVenturesAccountsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutMovementOfInvestmentsInAssociatesAndJointVenturesAccountsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about movement of investments in associates and joint ventures accounts.",
        "label": "Disclosure of detailed information about movement of investments in associates and joint ventures accounts [text block]",
        "terseLabel": "Disclosure of roll-forward of investments in associates and joint ventures accounts"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutMovementsInOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutMovementsInOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about movements in other comprehensive income related to hedges of net investment in foreign operations.",
        "label": "Disclosure of Detailed Information About Movements in Other Comprehensive Income Related to Hedges of Net Investment in Foreign Operations [Table Text Block]",
        "terseLabel": "Disclosure of detailed information about movements in other comprehensive income related to hedges of net investment in foreign operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutMovementsOfNoncurrentAssetsHeldForSaleTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutMovementsOfNoncurrentAssetsHeldForSaleTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of detailed information about movement of non current assets held for sale.",
        "label": "Disclosure of detailed information about movements of noncurrent assets held-for-sale [table text block]",
        "terseLabel": "Schedule of the movement of non-current assets held for sale"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutNetTradingIncomeTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutNetTradingIncomeTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about net trading income.",
        "label": "Disclosure of detailed information about net trading income [Text Block]",
        "terseLabel": "Schedule of net trading income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutNoncurrentAssetsForEachIndividualCountryForWhichRevenuesAreSignificantTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutNoncurrentAssetsForEachIndividualCountryForWhichRevenuesAreSignificantTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about non-current assets for each individual country for which revenues are significant.",
        "label": "Disclosure of detailed information about noncurrent assets for each individual country for which revenues are significant [Text Block]",
        "terseLabel": "Schedule of non-current assets by country"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutOffsettingOfFinancialAssetsAndFinancialLiabilitiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutOffsettingOfFinancialAssetsAndFinancialLiabilitiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about offsetting of financial assets and financial liabilities.",
        "label": "Disclosure of detailed information about offsetting of financial assets and financial liabilities [Text Block]",
        "terseLabel": "Disclosure of detail of the credit commitments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutOtherAccountsReceivablesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutOtherAccountsReceivablesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about disclosure of other accounts receivables.",
        "label": "Disclosure Of Detailed Information About Other Accounts Receivables [Text Block]",
        "terseLabel": "Schedule of other accounts receivable measured at amortized cost, except"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutOtherBorrowingsExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutOtherBorrowingsExplanatoryTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about other borrowings.",
        "label": "Disclosure Of Detailed Information About Other Borrowings Explanatory [Text Block]",
        "verboseLabel": "Schedule of borrowings"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutOtherIntangibleAssetsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutOtherIntangibleAssetsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about other intangible assets.",
        "label": "Disclosure of detailed information about other intangible assets [text block]",
        "terseLabel": "Disclosure of detailed information about other intangible assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutOtherReceivablesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutOtherReceivablesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about other receivables.",
        "label": "Disclosure of Detailed Information About Other Receivables [Table Text Block]",
        "terseLabel": "Disclosure of detailed information about other receivables"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutPortfolioOfLoansAssessedIndividuallyForImpairmentTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutPortfolioOfLoansAssessedIndividuallyForImpairmentTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about portfolio of loans assessed individually for impairment.",
        "label": "Disclosure of detailed information about portfolio of loans assessed individually for impairment [Text Block]",
        "terseLabel": "Disclosure of loans stage 3 individually assessed for ECL the gross amount and loss allowance balances"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about property, plant and equipment [text block]",
        "terseLabel": "Schedule of property, plant and equipment by type"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r82"
     ]
    },
    "aval_DisclosureOfDetailedInformationAboutReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about reconciliation of changes in allowance account for credit losses of financial assets.",
        "label": "Disclosure of detailed information about reconciliation of changes in allowance account for credit losses of financial assets [Text Block]",
        "terseLabel": "Disclosure of loss allowance on loans assuming each forward-looking scenario"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutReconciliationOfUndiscountedLeasePaymentsToNetInvestmentInFinanceLeaseTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutReconciliationOfUndiscountedLeasePaymentsToNetInvestmentInFinanceLeaseTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about reconciliation of undiscounted lease payments to net investment in finance lease.",
        "label": "Disclosure of detailed information about reconciliation of undiscounted lease payments to net investment in finance lease [Text Block]",
        "terseLabel": "Disclosure of detailed information about reconciliation of undiscounted lease payments to net investment in finance lease"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutRevenuesForEachIndividualCountryForWhichRevenuesAreSignificantTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutRevenuesForEachIndividualCountryForWhichRevenuesAreSignificantTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about revenues for each individual country for which revenues are significant.",
        "label": "Disclosure of detailed information about revenues for each individual country for which revenues are significant [Text Block]",
        "terseLabel": "Schedule of income by country"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutSensitivityAnalysisOfAssumptionsTransferRightsOfGasPipelinesToGovernmentEntitiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutSensitivityAnalysisOfAssumptionsTransferRightsOfGasPipelinesToGovernmentEntitiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about sensitivity analysis of the assumptions used by Promigas and its subsidiaries in the calculation of fair value of unconditional transfer rights of gas pipelines to Government entities.",
        "label": "Disclosure Of Detailed Information About Sensitivity Analysis Of Assumptions Transfer Rights Of Gas Pipelines To Government Entities Text Block",
        "terseLabel": "Disclosure of detailed information about sensitivity analysis of the assumptions used by Promigas and its subsidiaries in the calculation of fair value of unconditional transfer rights of gas pipelines to Government entities [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutSensitivityAnalysisOfChangesOnAssumptionsRelatedToInvestmentsClassifiedAsEquityInstrumentsAtFvociTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutSensitivityAnalysisOfChangesOnAssumptionsRelatedToInvestmentsClassifiedAsEquityInstrumentsAtFvociTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about sensitivity analysis of changes on assumptions related to investments classified as equity instruments at FVOCI.",
        "label": "Disclosure of Detailed Information About Sensitivity Analysis of Changes on Assumptions Related to Investments Classified as Equity Instruments at FVOCI [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutSensitivityAnalysisOfChangesOnAssumptionsRelatedToInvestmentsClassifiedAsEquityInstrumentsAtFvtplTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutSensitivityAnalysisOfChangesOnAssumptionsRelatedToInvestmentsClassifiedAsEquityInstrumentsAtFvtplTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about sensitivity analysis of changes on assumptions related to investments classified as equity instruments at FVTPL.",
        "label": "Disclosure of Detailed Information About Sensitivity Analysis of Changes on Assumptions Related to Investments Classified as Equity Instruments at FVTPL [Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutServiceConcessionArrangementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutServiceConcessionArrangementsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about service concession arrangements [text block]",
        "terseLabel": "Schedule of changes in financial assets in concession arrangements"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about service concession arrangements. [Refer: Service concession arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "aval_DisclosureOfDetailedInformationAboutSubsidiaryThatHasSignificantNonControllingInterestsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutSubsidiaryThatHasSignificantNonControllingInterestsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about subsidiary that has significant non controlling interests.",
        "label": "Disclosure of detailed information about subsidiary that has significant non controlling interests [Text Block]",
        "terseLabel": "Schedule of information regarding each direct subsidiary that has significant non-controlling interests"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationAboutTransferOfFairValueBetweenLevel1And2TextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationAboutTransferOfFairValueBetweenLevel1And2TextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information about transfer of fair value between level 1 and 2.",
        "label": "Disclosure of detailed information about transfer of fair value between level 1 and 2 [text block]",
        "terseLabel": "Disclosure of detailed information about transfer of fair value between level 1 and 2"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationOfUsefulLivesAndDepreciationRatesOfPropertyPlantAndEquipmentTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationOfUsefulLivesAndDepreciationRatesOfPropertyPlantAndEquipmentTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of detailed information of useful lives and depreciation rates of property plant and equipments.",
        "label": "Disclosure Of Detailed Information Of Useful Lives And Depreciation Rates Of Property Plant And Equipment [Text Block]",
        "terseLabel": "Schedule of estimated on a straight-line basis during the estimated useful life of the asset"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationOnCreditPortfolioByEconomicSectorTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationOnCreditPortfolioByEconomicSectorTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about the credit portfolio across the different regions.",
        "label": "Disclosure of Detailed Information on Credit Portfolio by Economic Sector [Text Block]",
        "terseLabel": "Disclosure of credit portfolio distribution by economic sector"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationOnCreditPortfolioByGeographicalAreaTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationOnCreditPortfolioByGeographicalAreaTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about the credit portfolio across the different regions.",
        "label": "Disclosure of Detailed Information on Credit Portfolio by Geographical Area [Text Block]",
        "terseLabel": "Disclosure of credit risk at the level in the different geographic areas"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationOnCreditPortfolioByRestructuringTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationOnCreditPortfolioByRestructuringTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about the credit portfolio which are restructured.",
        "label": "Disclosure of detailed information on credit portfolio by restructuring [text block]",
        "terseLabel": "Disclosure of balance of restructured loans"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationOnCreditPortfolioTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationOnCreditPortfolioTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about the credit portfolio.",
        "label": "Disclosure of Detailed Information on Credit Portfolio [Text Block]",
        "terseLabel": "Disclosure of credit portfolio per type of guarantees received NOT USED IN 2024 20-F"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationOnCreditWorthinessTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationOnCreditWorthinessTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about the credit worthiness of the entity.",
        "label": "Disclosure of Detailed information on Credit Worthiness [Text Block]",
        "terseLabel": "Disclosure of credit worthiness"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfDetailedInformationOnForeclosedAssetsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfDetailedInformationOnForeclosedAssetsTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed information about foreclosed assets.",
        "label": "Disclosure of Detailed Information on Foreclosed Assets [Text Block]",
        "terseLabel": "Disclosure of total of foreclosed assets received and sold"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of disaggregation of revenue from contracts with customers [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of disaggregation of revenue from contracts with customers [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the disaggregation of revenue from contracts with customers."
       }
      }
     },
     "auth_ref": [
      "r255"
     ]
    },
    "ifrs-full_DisclosureOfDividendsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfDividendsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of dividends [text block]",
        "terseLabel": "Schedule of the dividends are declared and paid to shareholders based on unconsolidated net income under Colombian IFRS (NCIF)"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of dividends. Dividends are distributions of profits to holders of equity investments in proportion to their holdings of a particular class of capital."
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfEarningsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfEarningsPerShareExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of earnings per share [text block]",
        "terseLabel": "Schedule of earnings per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for earnings per share."
       }
      }
     },
     "auth_ref": [
      "r136"
     ]
    },
    "aval_DisclosureOfEconomicScenarioForKeyIndicatorsOfCreditRiskAndCreditLossesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfEconomicScenarioForKeyIndicatorsOfCreditRiskAndCreditLossesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of economic scenario for key indicators of credit risk and credit losses.",
        "label": "Disclosure of Economic Scenario for Key Indicators of Credit Risk and Credit Losses [Table Text Block]",
        "terseLabel": "Disclosure of economic scenario for key indicators of credit risk"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfEntitysReportableSegmentsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of entity's operating segments [text block]",
        "terseLabel": "Schedule of operating segments"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for operating segments."
       }
      }
     },
     "auth_ref": [
      "r377"
     ]
    },
    "aval_DisclosureOfEquitySecuritiesAtFairValueThroughOciTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfEquitySecuritiesAtFairValueThroughOciTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of the equity securities at fair value through OCI.",
        "label": "Disclosure Of Equity Securities At Fair Value Through OCI [Table Text Block]",
        "terseLabel": "Disclosure of equity securities at fair value through OCI"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfEstimationsOfFairValueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfEstimationsOfFairValueAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of estimations of fair value [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfEventsAfterReportingPeriodExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureSubsequentEvents"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of events after reporting period [text block]",
        "terseLabel": "SUBSEQUENT EVENTS"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for events after the reporting period."
       }
      }
     },
     "auth_ref": [
      "r66"
     ]
    },
    "aval_DisclosureOfExposureToCreditRiskAndEclsForOtherAccountsReceivablesAndContractAssetsForCorporateCustomersTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfExposureToCreditRiskAndEclsForOtherAccountsReceivablesAndContractAssetsForCorporateCustomersTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of exposure to credit risk and ECLs for other accounts receivables and contract assets for corporate customers.",
        "label": "Disclosure Of Exposure To Credit Risk And ECLs For Other Accounts Receivables And Contract Assets For Corporate Customers [Table Text Block]",
        "terseLabel": "Disclosure of information about the exposure to credit risk and ECLs for other accounts receivables"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValue"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement [text block]",
        "terseLabel": "ESTIMATION OF FAIR VALUE"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for fair value measurement."
       }
      }
     },
     "auth_ref": [
      "r252"
     ]
    },
    "aval_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesNonrecurringBasisTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesNonrecurringBasisTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the fair value measurement of assets and liabilities measured on a nonrecurring basis.",
        "label": "Disclosure of fair value measurement of assets and liabilities, nonrecurring basis [table text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesRecurringBasisTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesRecurringBasisTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the fair value measurement of assets and liabilities measured on a recurring basis.",
        "label": "Disclosure of fair value measurement of assets and liabilities, recurring basis [table text block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the fair value measurement of assets."
       }
      }
     },
     "auth_ref": [
      "r251"
     ]
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfLiabilitiesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of liabilities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfLiabilitiesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of liabilities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the fair value measurement of liabilities."
       }
      }
     },
     "auth_ref": [
      "r251"
     ]
    },
    "ifrs-full_DisclosureOfFinancialAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial assets [text block]",
        "terseLabel": "Disclosure of financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r342"
     ]
    },
    "ifrs-full_DisclosureOfFinancialAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to financial assets."
       }
      }
     },
     "auth_ref": [
      "r342"
     ]
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsHeldForTradingExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsHeldForTradingExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial instruments held for trading [text block]",
        "terseLabel": "TRADING ASSETS AND LIABILITIES"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of financial instruments classified as held for trading. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about financial instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about financial instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of financial instruments."
       }
      }
     },
     "auth_ref": [
      "r324",
      "r333",
      "r342"
     ]
    },
    "ifrs-full_DisclosureOfFinancialLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialLiabilitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligations"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial liabilities [text block]",
        "terseLabel": "FINANCIAL OBLIGATIONS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r342"
     ]
    },
    "ifrs-full_DisclosureOfFinancialLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialLiabilitiesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial liabilities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialLiabilitiesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial liabilities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to financial liabilities."
       }
      }
     },
     "auth_ref": [
      "r342"
     ]
    },
    "ifrs-full_DisclosureOfGeneralHedgeAccountingExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfGeneralHedgeAccountingExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccounting"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of general hedge accounting [text block]",
        "terseLabel": "HEDGE ACCOUNTING"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for general hedge accounting."
       }
      }
     },
     "auth_ref": [
      "r356"
     ]
    },
    "ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of general information about financial statements [text block]",
        "terseLabel": "REPORTING ENTITY"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for general information about financial statements."
       }
      }
     },
     "auth_ref": [
      "r12"
     ]
    },
    "ifrs-full_DisclosureOfGoodwillExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfGoodwillExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwill"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of goodwill [text block]",
        "terseLabel": "GOODWILL"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of goodwill. [Refer: Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfHedgeAccountingAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfHedgeAccountingAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedges [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfHeldForTradingDerivativeAssetsAndLiabilitiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfHeldForTradingDerivativeAssetsAndLiabilitiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of components of held-for-trading derivative assets and liabilities.",
        "label": "Disclosure Of Held For Trading Derivative Assets And Liabilities [Table Text Block]",
        "terseLabel": "Schedule of held-for-trading derivative assets and liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfImpactOnNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryScenariosExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfImpactOnNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryScenariosExplanatoryTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure to measure the impact on Net interest margin and economic value of equity under regulatory scenarios.",
        "label": "Disclosure Of Impact On Net Interest Margin And Economic Value Of Equity Under Regulatory Scenarios Explanatory [Table Text Block]",
        "terseLabel": "Disclosure of results of NIM and EVE Shocks"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfImpairmentLossOfPortfolioTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfImpairmentLossOfPortfolioTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of impairment loss of portfolio.",
        "label": "Disclosure of impairment loss of portfolio [table text block]",
        "terseLabel": "Disclosure of impairment losses per portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfIncomeTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfIncomeTaxAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfIncomeTaxExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTax"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax [text block]",
        "terseLabel": "INCOME TAX"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for income taxes."
       }
      }
     },
     "auth_ref": [
      "r77"
     ]
    },
    "aval_DisclosureOfIncomeTaxLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfIncomeTaxLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfIncomeTaxTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfIncomeTaxTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutConsolidatedStructuredEntitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutConsolidatedStructuredEntitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about consolidated structured entities [text block]",
        "terseLabel": "Schedule of details of significant subsidiaries which are indirectly consolidated by Grupo Aval"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about consolidated structured entities. [Refer: Total for all consolidated structured entities [member]]"
       }
      }
     },
     "auth_ref": [
      "r240"
     ]
    },
    "ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutKeyManagementPersonnelExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about key management personnel [text block]",
        "terseLabel": "Schedule of key management personnel"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about key management personnel. [Refer: Key management personnel of entity or parent [member]]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about maturity profile of defined benefit obligation [text block]",
        "terseLabel": "Schedule of future benefit payments projected, reflecting services"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about the maturity profile of a defined benefit obligation. This will include the weighted average duration of the defined benefit obligation and may include other information about the distribution of the timing of benefit payments, such as a maturity analysis of the benefit payments. [Refer: Defined benefit obligation, at present value]"
       }
      }
     },
     "auth_ref": [
      "r103"
     ]
    },
    "ifrs-full_DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about the terms and conditions of hedging instruments and how they affect future cash flows. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r309"
     ]
    },
    "ifrs-full_DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information for cash-generating units [text block]",
        "terseLabel": "Schedule of goodwill assigned per Cash Generating Units (CGU)"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information for cash-generating units. [Refer: Total for all cash-generating units [member]]"
       }
      }
     },
     "auth_ref": [
      "r153"
     ]
    },
    "ifrs-full_DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information for cash-generating units [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information for cash-generating units [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to cash-generating units."
       }
      }
     },
     "auth_ref": [
      "r153"
     ]
    },
    "ifrs-full_DisclosureOfIntangibleAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of intangible assets [text block]",
        "terseLabel": "OTHER INTANGIBLE ASSETS"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for intangible assets."
       }
      }
     },
     "auth_ref": [
      "r175"
     ]
    },
    "ifrs-full_DisclosureOfIntangibleAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about intangible assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfIntangibleAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about intangible assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of intangible assets."
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "ifrs-full_DisclosureOfIntangibleAssetsWithIndefiniteUsefulLifeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsWithIndefiniteUsefulLifeExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of intangible assets with indefinite useful life [text block]",
        "terseLabel": "Disclosure of intangible assets with indefinite useful life [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of intangible assets with an indefinite useful life. [Refer: Intangible assets with indefinite useful life]"
       }
      }
     },
     "auth_ref": [
      "r173"
     ]
    },
    "aval_DisclosureOfInterestsInAssociatesCorporatePurposeTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInterestsInAssociatesCorporatePurposeTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information regarding the corporate purpose for the interests in associates.",
        "label": "Disclosure of interests in associates corporate purpose [table text block]",
        "terseLabel": "Disclosure of the main corporate purpose for associates"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInterestsInAssociatesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInterestsInAssociatesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interests in associates [text block]",
        "terseLabel": "Disclosure of investment in associates of ownership interest percentage"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of interests in associates. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r218"
     ]
    },
    "ifrs-full_DisclosureOfInterestsInJointArrangementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInterestsInJointArrangementsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interests in joint arrangements [text block]",
        "terseLabel": "Disclosure of investment in joint ventures of ownership interest percentage"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of interests in joint arrangements. A joint arrangement is an arrangement of which two or more parties have joint control."
       }
      }
     },
     "auth_ref": [
      "r218"
     ]
    },
    "ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInterestsInSubsidiariesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterest"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interests in subsidiaries [text block]",
        "terseLabel": "NON-CONTROLLING INTEREST"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of interests in subsidiaries. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r217"
     ]
    },
    "ifrs-full_DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interests in unconsolidated structured entities [text block]"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of interests in structured entities that are not controlled by the entity (unconsolidated structured entities). [Refer: Total for all unconsolidated structured entities [member]]"
       }
      }
     },
     "auth_ref": [
      "r219"
     ]
    },
    "aval_DisclosureOfInvestmentDebtSecuritiesFvociAmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeGrossOfTaxTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentDebtSecuritiesFvociAmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeGrossOfTaxTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of amounts reclassified to profit or loss form OCI gross of taxes, related to investment debt securities FVOCI.",
        "label": "Disclosure Of Investment Debt Securities FVOCI, Amount Reclassified To Profit Or Loss From Other Comprehensive Income Gross Of Tax [Table Text Block]",
        "terseLabel": "Schedule of Tabular disclosure of amounts reclassified to profit or loss form OCI gross of taxes, related to investment debt securities FVOCI"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentInAssociatesAndJointVenturesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVentures"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of investment in associates and joint ventures.",
        "label": "Disclosure of investment in associates and joint ventures [text block]",
        "terseLabel": "INVESTMENTS IN ASSOCIATES AND JOINT VENTURES"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentInTradingDebtSecuritiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentInTradingDebtSecuritiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of investment in trading debt securities.",
        "label": "Disclosure Of Investment In Trading Debt Securities [Table Text Block]",
        "terseLabel": "Investments in debt securities at fair value through profit or loss held for trading"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentInTradingEquitySecuritiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentInTradingEquitySecuritiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of investment in trading equity securities.",
        "label": "Disclosure Of Investment In Trading Equity Securities [Table Text Block]",
        "terseLabel": "Investments in equity securities at fair value through profit or loss held for trading"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentSecuritiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentSecuritiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of investment securities [abstract]",
        "label": "Disclosure of investment securities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentSecuritiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentSecuritiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecurities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure of investment securities.",
        "label": "Disclosure Of Investment Securities [Text Block]",
        "terseLabel": "INVESTMENT SECURITIES"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentsInAssociatesAndJointVenturesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentsInAssociatesAndJointVenturesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of investments in associates and joint ventures [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentsInDebtSecuritiesAtFairValueThroughOCITableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentsInDebtSecuritiesAtFairValueThroughOCITableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of investment in debt securities at fair value through other comprehensive income.",
        "label": "Disclosure Of Investments In Debt Securities At Fair Value Through O C I [Table Text Block]",
        "terseLabel": "Investments in debt securities at fair value through OCI"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentsInDebtSecuritiesAtFairValueThroughProfitOrLossTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentsInDebtSecuritiesAtFairValueThroughProfitOrLossTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of investment in debt securities at fair value through profit or loss.",
        "label": "Disclosure Of Investments In Debt Securities At Fair Value Through Profit Or Loss [Table Text Block]",
        "terseLabel": "Investments in debt securities at fair value through profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfInvestmentsInEquitySecuritiesAtFairValueThroughOCITableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfInvestmentsInEquitySecuritiesAtFairValueThroughOCITableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of investment in equity securities at fair value through other comprehensive income.",
        "label": "Disclosure Of Investments In Equity Securities At Fair Value Through O C I [Table Text Block]",
        "terseLabel": "Investments in equity securities at fair value through OCI"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfJointVenturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of joint ventures [text block]",
        "terseLabel": "Disclosure of condensed financial information of the joint ventures accounted for under the equity method"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of joint ventures. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r237"
     ]
    },
    "ifrs-full_DisclosureOfJointVenturesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of joint ventures [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfJointVenturesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of joint ventures [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to joint ventures."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r237"
     ]
    },
    "aval_DisclosureOfLegalRelatedAndNonLegalRelatedProvisionAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfLegalRelatedAndNonLegalRelatedProvisionAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of legal-related and non legal-related provision [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfLiquidityRequirementTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfLiquidityRequirementTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of liquidity requirement.",
        "label": "Disclosure of Liquidity Requirement [Table Text Block]",
        "terseLabel": "Disclosure of IRL ratio amounts"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfLoansAndAdvancesByRangeOfLoanToValueRatioTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfLoansAndAdvancesByRangeOfLoanToValueRatioTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of loans and advances by range of loan-to-value ratio.",
        "label": "Disclosure Of Loans And Advances By Range Of Loan To Value Ratio Table Text Block",
        "verboseLabel": "Disclosure of mortgage loans and advances by range of lone-to-value (LTV) ratio"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfLoansAndAdvancesToCustomersExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfLoansAndAdvancesToCustomersExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoans"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of loans and advances to customers [text block]",
        "terseLabel": "LOANS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of loans and advances to customers. [Refer: Loans and advances to customers]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfLoansAndReceivablesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfLoansAndReceivablesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of loans and receivables [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfMacroeconomicVariablesUsedExpectedCreditLossCalculationTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfMacroeconomicVariablesUsedExpectedCreditLossCalculationTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure for macroeconomic variables used in the expected credit loss calculation.",
        "label": "Disclosure of Macroeconomic Variables used Expected Credit Loss Calculation [Table Text Block]",
        "terseLabel": "Disclosure of macroeconomic variables used expected credit loss calculation"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for financial assets held for managing liquidity risk [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the maturity analysis for financial assets held for managing liquidity risk."
       }
      }
     },
     "auth_ref": [
      "r350"
     ]
    },
    "ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of nature and extent of risks arising from financial instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of nature and extent of risks arising from financial instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the nature and extent of risks arising from financial instruments."
       }
      }
     },
     "auth_ref": [
      "r325",
      "r326"
     ]
    },
    "ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net defined benefit liability (asset) [text block]",
        "terseLabel": "Schedule of post-employment and long-term benefits movements"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of a net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r89"
     ]
    },
    "ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNetDefinedBenefitLiabilityAssetLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net defined benefit liability (asset) [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNetDefinedBenefitLiabilityAssetTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net defined benefit liability (asset) [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the net defined benefit liability (asset)."
       }
      }
     },
     "auth_ref": [
      "r89"
     ]
    },
    "aval_DisclosureOfNetTradingIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNetTradingIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net trading income [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfNetTradingIncomeLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNetTradingIncomeLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net trading income [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfNetTradingIncomeTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNetTradingIncomeTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net trading income [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of non-adjusting events after reporting period [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfNoncontrollingInterestAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNoncontrollingInterestAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of noncontrolling interest [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfNoncontrollingInterestLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNoncontrollingInterestLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of noncontrolling interest [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfNoncontrollingInterestTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNoncontrollingInterestTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of noncontrolling interest [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfNoncurrentAssetsHeldForSaleAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNoncurrentAssetsHeldForSaleAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of noncurrent assets held-for-sale [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSale"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of non-current assets held for sale and discontinued operations [text block]",
        "terseLabel": "NON-CURRENT ASSETS HELD FOR SALE"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for non-current assets held for sale and discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r299"
     ]
    },
    "aval_DisclosureOfNoncurrentAssetsHeldForSaleLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNoncurrentAssetsHeldForSaleLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of noncurrent assets held-for-sale [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfNoncurrentAssetsHeldForSaleTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfNoncurrentAssetsHeldForSaleTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of noncurrent assets held-for-sale [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of non-current assets or disposal groups classified as held for sale [text block]",
        "terseLabel": "Schedule of the detail of non-current assets held for sale"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of non-current assets or disposal groups classified as held for sale. [Refer: Non-current assets or disposal groups classified as held for sale]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfOffsettingOfFinancialAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOffsettingOfFinancialAssetsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of offsetting of financial assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOffsettingOfFinancialAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOffsettingOfFinancialAssetsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of offsetting of financial assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the offsetting of financial assets."
       }
      }
     },
     "auth_ref": [
      "r303"
     ]
    },
    "ifrs-full_DisclosureOfOffsettingOfFinancialLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOffsettingOfFinancialLiabilitiesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of offsetting of financial liabilities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOffsettingOfFinancialLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOffsettingOfFinancialLiabilitiesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of offsetting of financial liabilities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the offsetting of financial liabilities."
       }
      }
     },
     "auth_ref": [
      "r303"
     ]
    },
    "ifrs-full_DisclosureOfOperatingSegmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of operating segments [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOperatingSegmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegments"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of operating segments [text block]",
        "terseLabel": "ANALYSIS OF OPERATING SEGMENTS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of operating segments. [Refer: Operating segments [member]]"
       }
      }
     },
     "auth_ref": [
      "r364"
     ]
    },
    "ifrs-full_DisclosureOfOperatingSegmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of operating segments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOperatingSegmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of operating segments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to operating segments."
       }
      }
     },
     "auth_ref": [
      "r364"
     ]
    },
    "aval_DisclosureOfOtherAccountsReceivablesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfOtherAccountsReceivablesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other accounts receivables [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfOtherExpenseTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfOtherExpenseTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of other expense.",
        "label": "Disclosure of other expense [table text block]",
        "terseLabel": "Schedule of other expense"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfOtherIncomeAndExpenseAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfOtherIncomeAndExpenseAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other income and expense [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfOtherIncomeTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfOtherIncomeTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of other income.",
        "label": "Disclosure of other income [table text block]",
        "terseLabel": "Schedule of other income"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOtherLiabilitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other liabilities [text block]",
        "terseLabel": "OTHER LIABILITIES"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other liabilities. [Refer: Other liabilities]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfOtherLiabilitiesToBeCancelledTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfOtherLiabilitiesToBeCancelledTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of other liabilities to be cancelled.",
        "label": "Disclosure Of Other Liabilities To Be Cancelled [Table Text Block]",
        "terseLabel": "Disclosure of other liabilities to be cancelled"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOtherOperatingIncomeExpenseExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpense"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other operating income (expense) [text block]",
        "terseLabel": "OTHER INCOME AND EXPENSE"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other operating income or expense. [Refer: Other operating income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfOtherProvisionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other provisions [text block]",
        "terseLabel": "Disclosure of legal related and non legal related provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r160"
     ]
    },
    "ifrs-full_DisclosureOfOtherProvisionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other provisions [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherProvisionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other provisions [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to other provisions."
       }
      }
     },
     "auth_ref": [
      "r160"
     ]
    },
    "aval_DisclosureOfOtherReceivablesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfOtherReceivablesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of other receivables.",
        "label": "Disclosure Of Other Receivables [Table Text block]",
        "terseLabel": "Disclosure of other receivables"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfPercentageOfLiquidityRequirementTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfPercentageOfLiquidityRequirementTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of percentage of liquidity requirement.",
        "label": "Disclosure of Percentage of Liquidity Requirement [Table Text Block]",
        "terseLabel": "Disclosure of IRL ration percentage"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfPropertyPlantAndEquipmentExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of property, plant and equipment [text block]",
        "terseLabel": "TANGIBLE ASSETS"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for property, plant and equipment."
       }
      }
     },
     "auth_ref": [
      "r85"
     ]
    },
    "ifrs-full_DisclosureOfProvisionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfProvisionsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisions"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of provisions [text block]",
        "terseLabel": "PROVISIONS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of provisions. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of quantitative information about right-of-use assets [text block]",
        "terseLabel": "Schedule of right of use assets by type"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of quantitative information about right-of-use assets. [Refer: Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r268"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInGoodwillAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in goodwill [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInGoodwillExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in goodwill [text block]",
        "terseLabel": "Schedule of movement of the goodwill"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of changes in goodwill. [Refer: Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r290"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInGoodwillLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in goodwill [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInGoodwillTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in goodwill [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of changes in goodwill."
       }
      }
     },
     "auth_ref": [
      "r290"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of changes in the loss allowance and explanation of changes in the gross carrying amount for financial instruments."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r331"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [text block]",
        "terseLabel": "Schedule of the movement of the carrying value amounts of tangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of changes in property, plant and equipment, including right-of-use assets."
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInPropertyPlantAndEquipmentIncludingRightofuseAssetsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing the reconciliation of changes in property, plant and equipment, including right-of-use assets."
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "aval_DisclosureOfReconciliationOfLossAllowanceTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfReconciliationOfLossAllowanceTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of reconciliation of loss allowance.",
        "label": "Disclosure of Reconciliation of Loss Allowance [Table Text Block]",
        "terseLabel": "Disclosure of reconciliations of loan allowance"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfRelatedPartyExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfRelatedPartyExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedParties"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of related party [text block]",
        "terseLabel": "RELATED PARTIES"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for related parties."
       }
      }
     },
     "auth_ref": [
      "r119"
     ]
    },
    "aval_DisclosureOfRelatedPartyLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRelatedPartyLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of related party [Line Items]",
        "verboseLabel": "Disclosure of Related Party [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfRelatedPartyTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRelatedPartyTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of related party [Table]",
        "verboseLabel": "Disclosure Of Related Party [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReservesAndOtherEquityInterestExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfReservesAndOtherEquityInterestExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reserves within equity [text block]",
        "terseLabel": "Schedule of appropriation of retained earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of reserves within equity. [Refer: Other reserves [member]]"
       }
      }
     },
     "auth_ref": [
      "r40"
     ]
    },
    "ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfRevenueFromContractsWithCustomersExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomers"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of revenue from contracts with customers [text block]",
        "terseLabel": "NET INCOME FROM CONTRACTS WITH CUSTOMERS"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for revenue from contracts with customers."
       }
      }
     },
     "auth_ref": [
      "r258",
      "r259"
     ]
    },
    "aval_DisclosureOfRiskManagementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRiskManagementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of risk management [abstract]",
        "label": "Disclosure of risk management [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfRiskManagementCreditRiskTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRiskManagementCreditRiskTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagement"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of the entity's risk management practices and policies, credit risk.",
        "label": "Disclosure of risk management, credit risk [text block]",
        "terseLabel": "Disclosure of risk management, credit risk [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfRiskManagementLiquidityRiskTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRiskManagementLiquidityRiskTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagement"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of the entity's risk management practices and policies, liquidity risk.",
        "label": "Disclosure of risk management, liquidity risk [text block]",
        "terseLabel": "Disclosure of risk management, liquidity risk [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfRiskManagementMarketRiskTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRiskManagementMarketRiskTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagement"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of the entity's risk management practices and policies, market risk.",
        "label": "Disclosure of risk management, market risk [text block]",
        "terseLabel": "Disclosure of risk management, market risk [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfRiskManagementRegulatoryCapitalManagementTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRiskManagementRegulatoryCapitalManagementTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagement"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of the entity's risk management practices and policies, regulatory capital management.",
        "label": "Disclosure of risk management, regulatory capital management [text block]",
        "terseLabel": "Disclosure of risk management, regulatory capital management [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of risk management strategy related to hedge accounting [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of risk management strategy related to hedge accounting [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the risk management strategy in relation to hedge accounting."
       }
      }
     },
     "auth_ref": [
      "r308",
      "r385"
     ]
    },
    "aval_DisclosureOfRiskManagementTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfRiskManagementTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagement"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of the entity's risk management practices and policies.",
        "label": "Disclosure of risk management [text block]",
        "terseLabel": "Disclosure of risk management [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfScenarioOfProbabilityOfWeightingInMeasuringExpectedCreditLossesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfScenarioOfProbabilityOfWeightingInMeasuringExpectedCreditLossesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of scenario of probability weighting in measuring Expected Credit Losses (ECL).",
        "label": "Disclosure Of Scenario Of Probability Of Weighting In Measuring Expected Credit Losses [Table Text Block]",
        "terseLabel": "Disclosure of scenario probability weightings applied in measuring ECL"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfSegmentationOfAccountsReceivableTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfSegmentationOfAccountsReceivableTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of segmentation of accounts receivables.",
        "label": "Disclosure Of Segmentation Of Accounts Receivable [Table Text Block]",
        "terseLabel": "Disclosure of exposure to credit risk by segment for accounts receivable"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis for actuarial assumptions [text block]",
        "terseLabel": "Schedule of sensitivity analysis for post-employment and long-term benefits liabilities due to defined benefits plans to different actuarial and financial variables"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of a sensitivity analysis for significant actuarial assumptions used to determine the present value of a defined benefit obligation. [Refer: Actuarial assumptions [domain]; Defined benefit obligation, at present value]"
       }
      }
     },
     "auth_ref": [
      "r101"
     ]
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis for actuarial assumptions [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis for actuarial assumptions [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the sensitivity analysis for actuarial assumptions."
       }
      }
     },
     "auth_ref": [
      "r101"
     ]
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisOfFairValueMeasurementToChangesInUnobservableInputsAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisOfFairValueMeasurementToChangesInUnobservableInputsAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [text block]",
        "terseLabel": "Schedule of table includes a sensitivity analysis of main equity securities"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the sensitivity analysis of fair value measurement of assets to changes in unobservable inputs."
       }
      }
     },
     "auth_ref": [
      "r250"
     ]
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisOfFairValueMeasurementToChangesInUnobservableInputsAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisOfFairValueMeasurementToChangesInUnobservableInputsAssetsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisOfFairValueMeasurementToChangesInUnobservableInputsAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisOfFairValueMeasurementToChangesInUnobservableInputsAssetsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the sensitivity analysis of fair value measurement of assets to changes in unobservable inputs."
       }
      }
     },
     "auth_ref": [
      "r250"
     ]
    },
    "aval_DisclosureOfSensitivityAnalysisOfForeignExchangeEffectTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfSensitivityAnalysisOfForeignExchangeEffectTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of information about sensitivity analysis of foreign exchange effect.",
        "label": "Disclosure Of Sensitivity Analysis Of Foreign Exchange Effect [Table Text Block]",
        "verboseLabel": "Disclosure of sensitivities of profit or loss before taxes and equity (OCI) to reasonably possible changes in exchange rates"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfServiceConcessionArrangementsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfServiceConcessionArrangementsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about service concession arrangements [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfServiceConcessionArrangementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfServiceConcessionArrangementsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRights"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of service concession arrangements [text block]",
        "terseLabel": "CONCESSION ARRANGEMENTS RIGHTS"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for service concession arrangements."
       }
      }
     },
     "auth_ref": [
      "r382"
     ]
    },
    "ifrs-full_DisclosureOfServiceConcessionArrangementsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfServiceConcessionArrangementsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about service concession arrangements [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfServiceConcessionArrangementsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfServiceConcessionArrangementsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about service concession arrangements [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of service concession arrangements."
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParent"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of share capital, reserves and other equity interest [text block]",
        "terseLabel": "EQUITY ATTRIBUTABLE TO OWNERS OF THE PARENT"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for share capital, reserves and other equity interest."
       }
      }
     },
     "auth_ref": [
      "r41"
     ]
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInAssociatesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of associates [text block]",
        "terseLabel": "Disclosure of condensed financial information of the associates accounted for under the equity method"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of associates. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r238"
     ]
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInAssociatesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of associates [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInAssociatesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of associates [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to associates."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r238"
     ]
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInSubsidiariesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of subsidiaries [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInSubsidiariesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of subsidiaries [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to subsidiaries."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r236"
     ]
    },
    "ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of significant unobservable inputs used in fair value measurement of assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to significant unobservable inputs used in the fair value measurement of assets."
       }
      }
     },
     "auth_ref": [
      "r243"
     ]
    },
    "aval_DisclosureOfSummaryOfInvestmentsInDebtSecuritiesAtAmortizedCostByMaturityDatesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfSummaryOfInvestmentsInDebtSecuritiesAtAmortizedCostByMaturityDatesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tabular disclosure of summary of investments in debt securities at amortized cost by maturity dates.",
        "label": "Disclosure Of Summary Of Investments In Debt Securities At Amortized Cost By Maturity Dates [Table Text Block]",
        "terseLabel": "Summary of investments in debt securities at amortized cost by maturity dates"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DisclosureOfSwapsToReduceExchangeRateRiskOfFinancialLiabilitiesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfSwapsToReduceExchangeRateRiskOfFinancialLiabilitiesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about interest rate swaps and cross currency swaps (\"Cross Currency Swaps\") to reduce the exchange rate risk of financial liabilities.",
        "label": "Disclosure Of Swaps To Reduce Exchange Rate Risk Of Financial Liabilities [Table Text Block]",
        "terseLabel": "Disclosure of hedging of exchange rate risk"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of temporary difference, unused tax losses and unused tax credits [text block]",
        "terseLabel": "Schedule of carrying value of the assets and liabilities and their tax bases give rise to the following temporary differences which result in deferred taxes"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of types of temporary differences, unused tax losses and unused tax credits. [Refer: Unused tax credits [member]; Unused tax losses [member]; Temporary differences [member]]"
       }
      }
     },
     "auth_ref": [
      "r75"
     ]
    },
    "ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTradeAndOtherReceivablesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNet"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of trade and other receivables [text block]",
        "terseLabel": "OTHER ACCOUNTS RECEIVABLE, NET"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of trade and other receivables. [Refer: Trade and other receivables]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "aval_DisclosureOfTradingAssetsInDebtSecuritiesPledgedAsCollateralTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfTradingAssetsInDebtSecuritiesPledgedAsCollateralTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of trading assets in debt securities pledged as collateral.",
        "label": "Disclosure Of Trading Assets In Debt Securities Pledged As Collateral [Table Text Block]",
        "terseLabel": "Trading assets in debt securities pledged as collateral"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTradingIncomeExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTradingIncomeExpenseExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLoss"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of trading income (expense) [text block]",
        "terseLabel": "NET TRADING INCOME (LOSS)"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of trading income (expense). [Refer: Trading income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r587"
     ]
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transactions between related parties [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transactions between related parties [text block]",
        "terseLabel": "Schedule of transactions between related parties"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of transactions between the entity and its related parties. [Refer: Total for all related parties [member]]"
       }
      }
     },
     "auth_ref": [
      "r113"
     ]
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transactions between related parties [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transactions between related parties [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to transactions between related parties."
       }
      }
     },
     "auth_ref": [
      "r118"
     ]
    },
    "aval_DisclosureOfTransfersOfFinancialAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisclosureOfTransfersOfFinancialAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transfers of financial assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTransfersOfFinancialAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfTransfersOfFinancialAssetsExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transfers of financial assets [text block]",
        "terseLabel": "TRANSFERS OF FINANCIAL ASSETS"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of transfers of financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r357"
     ]
    },
    "ifrs-full_DisclosureOfUnconsolidatedStructuredEntitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfUnconsolidatedStructuredEntitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of unconsolidated structured entities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfUnconsolidatedStructuredEntitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfUnconsolidatedStructuredEntitiesExplanatory",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of unconsolidated structured entities [text block]",
        "terseLabel": "UNCONSOLIDATED STRUCTURED ENTITIES"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of unconsolidated structured entities. [Refer: Total for all unconsolidated structured entities [member]]"
       }
      }
     },
     "auth_ref": [
      "r239"
     ]
    },
    "ifrs-full_DisclosureOfUnconsolidatedStructuredEntitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfUnconsolidatedStructuredEntitiesLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of unconsolidated structured entities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfUnconsolidatedStructuredEntitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfUnconsolidatedStructuredEntitiesTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of unconsolidated structured entities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to unconsolidated structured entities."
       }
      }
     },
     "auth_ref": [
      "r239"
     ]
    },
    "ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfVoluntaryChangeInAccountingPolicyAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of voluntary change in accounting policy [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfVoluntaryChangeInAccountingPolicyLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of voluntary change in accounting policy [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisclosureOfVoluntaryChangeInAccountingPolicyTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of voluntary change in accounting policy [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to a voluntary change in accounting policy."
       }
      }
     },
     "auth_ref": [
      "r201"
     ]
    },
    "ifrs-full_DiscontinuedOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DiscontinuedOperationsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discontinued operations [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of an entity that either has been disposed of or is classified as held for sale, and that: (a) represents a separate major line of business or geographical area of operations; (b) is part of a single co-ordinated plan to dispose of a separate major line of business or geographical area of operations; or (c) is a subsidiary acquired exclusively with a view to resale. A component of an entity comprises operations and cash flows that can be clearly distinguished, operationally and for financial reporting purposes, from the rest of the entity. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r299"
     ]
    },
    "ifrs-full_DiscountRateMeasurementInputMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DiscountRateMeasurementInputMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discount rate, measurement input [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a discount rate used as a measurement input used in valuation techniques based on a present value calculation."
       }
      }
     },
     "auth_ref": [
      "r624"
     ]
    },
    "ifrs-full_DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discounted unguaranteed residual value of assets subject to finance lease",
        "verboseLabel": "Plus, estimated residual amount of assets given for rental (without guarantee)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the discounted unguaranteed residual value of assets subject to finance leases. Unguaranteed residual value is the portion of the residual value of the underlying asset, the realisation of which by a lessor is not assured or is guaranteed solely by a party related to the lessor. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset."
       }
      }
     },
     "auth_ref": [
      "r271"
     ]
    },
    "aval_DisposalGroupBeforeSaleTransactionShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisposalGroupBeforeSaleTransactionShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disposal Group, Before Sale Transaction, Shares",
        "label": "Disposal Group, Before Sale Transaction, Shares",
        "terseLabel": "BAC shares before the sale"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisposalsAndRetirementsIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisposalsAndRetirementsIntangibleAssetsOtherThanGoodwill",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposals and retirements, intangible assets other than goodwill",
        "negatedLabel": "Withdrawals"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in intangible assets other than goodwill resulting from disposals and retirements. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "aval_DisposalsAndRetirementsTangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DisposalsAndRetirementsTangibleAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The decrease in tangible assets resulting from disposals and retirements.",
        "label": "Disposals and retirements, tangible assets",
        "negatedLabel": "Withdrawals / Sales"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisposalsInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisposalsInvestmentProperty",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposals, investment property",
        "negatedLabel": "Disposals, investment property"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in investment property resulting from disposals. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r183",
      "r186"
     ]
    },
    "ifrs-full_DisposalsPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DisposalsPropertyPlantAndEquipment",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposals, property, plant and equipment",
        "negatedLabel": "Disposals, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r80"
     ]
    },
    "aval_DividendWithholdingTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DividendWithholdingTaxRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividend withholding tax rate",
        "label": "Dividend withholding tax rate",
        "terseLabel": "Dividend withholding tax rate"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DividendsPaid": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsPaid",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends recognised as distributions to owners",
        "negatedLabel": "Dividends declared",
        "negatedTerseLabel": "Dividends declared in cash"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends recognised as distributions to owners."
       }
      }
     },
     "auth_ref": [
      "r8"
     ]
    },
    "ifrs-full_DividendsPaidClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsPaidClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends paid, classified as financing activities",
        "negatedLabel": "Dividends paid to shareholders"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for dividends paid by the entity, classified as financing activities."
       }
      }
     },
     "auth_ref": [
      "r194"
     ]
    },
    "ifrs-full_DividendsPaidOrdinaryShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsPaidOrdinaryShares",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends paid, ordinary shares",
        "negatedLabel": "Declared dividends in shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends paid by the entity on ordinary shares. [Refer: Ordinary shares [member]]"
       }
      }
     },
     "auth_ref": [
      "r137"
     ]
    },
    "ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends paid to non-controlling interests, classified as financing activities",
        "negatedLabel": "Dividends paid to non-controlling interest"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for dividends paid to non-controlling interests, classified as financing activities. [Refer: Non-controlling interests; Dividends paid to non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r619"
     ]
    },
    "aval_DividendsPaidToNoncontrollingInterestsPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DividendsPaidToNoncontrollingInterestsPerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends paid to non-controlling interests, per share",
        "label": "Dividends paid to noncontrolling interests, per share",
        "terseLabel": "Dividends paid to non-controlling interests, per share"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DividendsPayable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsPayable",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends payable, non-cash assets distributions",
        "verboseLabel": "Dividends payable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends payable by means of the distribution of non-cash assets to owners."
       }
      }
     },
     "auth_ref": [
      "r203"
     ]
    },
    "aval_DividendsPayableMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DividendsPayableMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to dividends payable.",
        "label": "Dividends Payable [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DividendsPayableSharesRatio": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DividendsPayableSharesRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends payable, shares, ratio",
        "label": "Dividends payable, shares, ratio",
        "terseLabel": "Dividends payable, shares, ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DividendsPayableSharesToBeIssuedMaximum": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DividendsPayableSharesToBeIssuedMaximum",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends payable, shares to be issued, maximum",
        "label": "Dividends payable, shares to be issued, maximum",
        "terseLabel": "Dividends payable, shares to be issued, maximum"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DividendsPayableSharesToBeIssuedUnitPrice": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DividendsPayableSharesToBeIssuedUnitPrice",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends payable, shares to be issued, unit price",
        "label": "Dividends payable, shares to be issued, unit price",
        "terseLabel": "Dividends payable, shares to be issued, unit price"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails",
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners",
        "verboseLabel": "Total declared dividends"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends proposed or declared after the reporting period but before financial statements are authorised for issue. Such dividends are not recognised as a liability at the end of the reporting period because no obligation exists at that time."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r64"
     ]
    },
    "ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share",
        "terseLabel": "Declared dividends"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners."
       }
      }
     },
     "auth_ref": [
      "r10"
     ]
    },
    "aval_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerSharePerInstallment": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerSharePerInstallment",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails",
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share, per installment",
        "label": "Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share, per installment",
        "terseLabel": "Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share, per installment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DividendsReceivedClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DividendsReceivedClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends received, classified as investing activities",
        "verboseLabel": "Dividends received from investments"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from dividends received, classified as investing activities. [Refer: Dividends received]"
       }
      }
     },
     "auth_ref": [
      "r194"
     ]
    },
    "dei_DocumentAccountingStandard": {
     "xbrltype": "accountingStandardItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentAccountingStandard",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Accounting Standard",
        "documentation": "The basis of accounting the registrant has used to prepare the financial statements included in this filing This can either be 'U.S. GAAP', 'International Financial Reporting Standards', or 'Other'."
       }
      }
     },
     "auth_ref": [
      "r479"
     ]
    },
    "dei_DocumentAnnualReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentAnnualReport",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Annual Report",
        "documentation": "Boolean flag that is true only for a form used as an annual report."
       }
      }
     },
     "auth_ref": [
      "r478",
      "r479",
      "r502"
     ]
    },
    "dei_DocumentFinStmtErrorCorrectionFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentFinStmtErrorCorrectionFlag",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Financial Statement Error Correction [Flag]",
        "documentation": "Indicates whether any of the financial statement period in the filing include a restatement due to error correction."
       }
      }
     },
     "auth_ref": [
      "r478",
      "r479",
      "r502",
      "r545"
     ]
    },
    "dei_DocumentFiscalPeriodFocus": {
     "xbrltype": "fiscalPeriodItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentFiscalPeriodFocus",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Fiscal Period Focus",
        "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentFiscalYearFocus": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentFiscalYearFocus",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Fiscal Year Focus",
        "documentation": "This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentInformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentInformationLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Information [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentInformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentInformationTable",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Information [Table]",
        "documentation": "Container to support the formal attachment of each official or unofficial, public or private document as part of a submission package."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentPeriodEndDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentPeriodEndDate",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Period End Date",
        "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentRegistrationStatement": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentRegistrationStatement",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Registration Statement",
        "documentation": "Boolean flag that is true only for a form used as a registration statement."
       }
      }
     },
     "auth_ref": [
      "r473"
     ]
    },
    "dei_DocumentShellCompanyReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentShellCompanyReport",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Shell Company Report",
        "documentation": "Boolean flag that is true for a Shell Company Report pursuant to section 13 or 15(d) of the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r479"
     ]
    },
    "dei_DocumentTransitionReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentTransitionReport",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Transition Report",
        "documentation": "Boolean flag that is true only for a form used as a transition report."
       }
      }
     },
     "auth_ref": [
      "r523"
     ]
    },
    "dei_DocumentType": {
     "xbrltype": "submissionTypeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentType",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Type",
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DonationsAndSubsidiesExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "DonationsAndSubsidiesExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Donations and subsidies expense",
        "negatedLabel": "Donations expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense arising from donations and subsidies."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_DonationsExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DonationsExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 23.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to the donations expenses.",
        "label": "Donations Expense",
        "negatedLabel": "Donations expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DtfInterestRatePercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DtfInterestRatePercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "DTF interest rate percentage",
        "label": "DTF interest rate percentage",
        "terseLabel": "DTF Interest rate"
       }
      }
     },
     "auth_ref": []
    },
    "aval_DtfInterestRatePercentageOnOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "DtfInterestRatePercentageOnOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "DTF interest rate percentage on one year projection",
        "label": "DTF interest rate percentage on one year projection",
        "terseLabel": "DTF Interest rate, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]",
        "terseLabel": "Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year"
       }
      }
     },
     "auth_ref": [
      "r534"
     ]
    },
    "currency_EUR": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2024",
     "localname": "EUR",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Euro Member Countries, Euro"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EasementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EasementsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Easements [member]",
        "label": "Easements [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EconomicSectorDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EconomicSectorDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Economic Sector [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EducationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EducationMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Education [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EffectOfExchangeRateChangesOnCashAndCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect of exchange rate changes on cash and cash equivalents",
        "terseLabel": "Effect of foreign currency changes on cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The effect of exchange rate changes on cash and cash equivalents held or due in a foreign currency. [Refer: Cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r192",
      "r193"
     ]
    },
    "aval_EffectOfMovementsInExchangeRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EffectOfMovementsInExchangeRates",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Effect of movements In exchange rates",
        "label": "Effect of movements In exchange rates",
        "terseLabel": "Effect of movements in exchange rates"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EffectOfSpinOffOnNoncontrollingInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EffectOfSpinOffOnNoncontrollingInterest",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Effect of Spin Off on Noncontrolling Interest",
        "label": "Effect of Spin Off on Noncontrolling Interest",
        "terseLabel": "Effect of the spin-off on non-controlling interest"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EffectOfSpinOffOnOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EffectOfSpinOffOnOwnersOfParent",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Effect of Spin Off on Owners of Parent",
        "label": "Effect of Spin Off on Owners of Parent",
        "terseLabel": "Effect of the spin-off on owners of the parent"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EffectOnFairValueOfUnconditionalTransferRightsOfGasPipelinesToGovernmentEntitiesDueToDecreaseInBasisPoint": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EffectOnFairValueOfUnconditionalTransferRightsOfGasPipelinesToGovernmentEntitiesDueToDecreaseInBasisPoint",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The effect on fair value of assets due to decrease in basis point.",
        "label": "Effect on fair value of unconditional transfer rights of gas pipelines to Government entities due to decrease in basis point",
        "terseLabel": "-100 bps"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EffectOnFairValueOfUnconditionalTransferRightsOfGasPipelinesToGovernmentEntitiesDueToIncreaseInBasisPoint": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EffectOnFairValueOfUnconditionalTransferRightsOfGasPipelinesToGovernmentEntitiesDueToIncreaseInBasisPoint",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The effect on fair value of assets due to increase in basis point.",
        "label": "Effect on Fair Value of Unconditional Transfer Rights Of Gas Pipelines to Government entities due to increase in basis point",
        "terseLabel": "+100 bps"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ElectronicDataProcessingExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ElectronicDataProcessingExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to electronic data processing.",
        "label": "Electronic data processing expense",
        "negatedLabel": "Data processing"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EliminationOfIntersegmentAmountsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EliminationOfIntersegmentAmountsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Elimination of intersegment amounts [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the elimination of intersegment amounts in the reconciliations of total segment amounts to amounts recognised in the entity's financial statements."
       }
      }
     },
     "auth_ref": [
      "r471",
      "r472"
     ]
    },
    "aval_EmployeeBenefitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EmployeeBenefitsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee benefits [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_EmployeeStockOptionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2024",
     "localname": "EmployeeStockOptionMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Option [Member]",
        "terseLabel": "Employee Stock Option"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EnergiaEficienteSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EnergiaEficienteSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Energia Eficiente S.A. [member]",
        "label": "Energia Eficiente SA [member]",
        "terseLabel": "Energia Eficiente S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_EnergyAndGasConcessionArrangementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EnergyAndGasConcessionArrangementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Energy and Gas concession arrangement [member]",
        "label": "Energy and Gas concession arrangement [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EnergyAndGasEGMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EnergyAndGasEGMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Energy and gas [member]",
        "label": "Energy and gas [member]",
        "terseLabel": "Energy and Gas"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EntitiesControlledbyIndividualsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EntitiesControlledbyIndividualsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entities controlled by individuals [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine1": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressAddressLine1",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Address Line One",
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine2": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressAddressLine2",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Address Line Two",
        "documentation": "Address Line 2 such as Street or Suite number"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCityOrTown": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressCityOrTown",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, City or Town",
        "documentation": "Name of the City or Town"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCountry": {
     "xbrltype": "countryCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressCountry",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Country",
        "documentation": "ISO 3166-1 alpha-2 country code."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressPostalZipCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressPostalZipCode",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Postal Zip Code",
        "documentation": "Code for the postal or zip code"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressStateOrProvince": {
     "xbrltype": "stateOrProvinceItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressStateOrProvince",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, State or Province",
        "documentation": "Name of the state or province."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressesAddressTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressesAddressTypeAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Addresses, Address Type [Axis]",
        "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCentralIndexKey": {
     "xbrltype": "centralIndexKeyItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityCentralIndexKey",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Central Index Key",
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
       }
      }
     },
     "auth_ref": [
      "r475"
     ]
    },
    "dei_EntityCommonStockSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityCommonStockSharesOutstanding",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Common Stock, Shares Outstanding",
        "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCurrentReportingStatus": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityCurrentReportingStatus",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Current Reporting Status",
        "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Entities [Member]",
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityEmergingGrowthCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityEmergingGrowthCompany",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Emerging Growth Company",
        "documentation": "Indicate if registrant meets the emerging growth company criteria."
       }
      }
     },
     "auth_ref": [
      "r475"
     ]
    },
    "dei_EntityFileNumber": {
     "xbrltype": "fileNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityFileNumber",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities Act File Number",
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityFilerCategory": {
     "xbrltype": "filerCategoryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityFilerCategory",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Filer Category",
        "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure."
       }
      }
     },
     "auth_ref": [
      "r475"
     ]
    },
    "dei_EntityIncorporationStateCountryCode": {
     "xbrltype": "edgarStateCountryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityIncorporationStateCountryCode",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Incorporation, State or Country Code",
        "documentation": "Two-character EDGAR code representing the state or country of incorporation."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityInteractiveDataCurrent": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityInteractiveDataCurrent",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Interactive Data Current",
        "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files)."
       }
      }
     },
     "auth_ref": [
      "r585"
     ]
    },
    "aval_EntityLiquidation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EntityLiquidation",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of decrease in investments due to entity liquidation.",
        "label": "Entity liquidation",
        "terseLabel": "Entity liquidation"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityListingDepositoryReceiptRatio": {
     "xbrltype": "pureItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityListingDepositoryReceiptRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Listing, Depository Receipt Ratio",
        "documentation": "The number of underlying shares represented by one American Depository Receipt (ADR) or Global Depository Receipt (GDR). A value of '3' means that one ADR represents 3 underlying shares. If one underlying share represents 2 ADR's then the value would be represented as '0.5'."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityListingParValuePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityListingParValuePerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Listing, Par Value Per Share",
        "documentation": "The par value per share of security quoted in same currency as Trading currency. Example: '0.01'."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityRegistrantName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityRegistrantName",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Registrant Name",
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
       }
      }
     },
     "auth_ref": [
      "r475"
     ]
    },
    "dei_EntityShellCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityShellCompany",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Shell Company",
        "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r475"
     ]
    },
    "dei_EntityVoluntaryFilers": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityVoluntaryFilers",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Voluntary Filers",
        "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityWellKnownSeasonedIssuer": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityWellKnownSeasonedIssuer",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Well-known Seasoned Issuer",
        "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A."
       }
      }
     },
     "auth_ref": [
      "r586"
     ]
    },
    "ecd_EqtyAwrdsAdjFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "EqtyAwrdsAdjFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments, Footnote [Text Block]",
        "terseLabel": "Equity Awards Adjustments, Footnote"
       }
      }
     },
     "auth_ref": [
      "r528"
     ]
    },
    "ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]",
        "terseLabel": "Equity Awards Adjustments, Excluding Value Reported in Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r581"
     ]
    },
    "ecd_EqtyAwrdsAdjsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "EqtyAwrdsAdjsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments [Member]",
        "terseLabel": "Equity Awards Adjustments"
       }
      }
     },
     "auth_ref": [
      "r581"
     ]
    },
    "ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "EqtyAwrdsInSummryCompstnTblForAplblYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]",
        "terseLabel": "Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r581"
     ]
    },
    "ifrs-full_Equity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Equity",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_EquityAndLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity",
        "periodEndLabel": "Balance",
        "periodStartLabel": "Balance",
        "terseLabel": "Equity",
        "totalLabel": "Total equity",
        "verboseLabel": "Total equity"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of residual interest in the assets of the entity after deducting all its liabilities."
       }
      }
     },
     "auth_ref": [
      "r27",
      "r34",
      "r205",
      "r208",
      "r241",
      "r242",
      "r248"
     ]
    },
    "ifrs-full_EquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EquityAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity [abstract]",
        "verboseLabel": "Equity"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EquityAndLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EquityAndLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity and liabilities",
        "totalLabel": "Total liabilities and equity",
        "verboseLabel": "Total liabilities and equity"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the entity's equity and liabilities. [Refer: Equity; Liabilities]"
       }
      }
     },
     "auth_ref": [
      "r27"
     ]
    },
    "ifrs-full_EquityAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EquityAndLiabilitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity and liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EquityAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EquityAttributableToOwnersOfParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity attributable to owners of parent",
        "terseLabel": "Equity attributable to owners of the parent",
        "totalLabel": "Equity attributable to owners of the parent"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of equity attributable to the owners of the parent. This specifically excludes non-controlling interest."
       }
      }
     },
     "auth_ref": [
      "r26"
     ]
    },
    "ifrs-full_EquityAttributableToOwnersOfParentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EquityAttributableToOwnersOfParentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity attributable to owners of parent [member]",
        "verboseLabel": "Equity attributable to owners of the parent"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity attributable to the owners of the parent."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    },
    "ifrs-full_EquityInvestmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EquityInvestmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity investments [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for investments in equity instruments."
       }
      }
     },
     "auth_ref": [
      "r448",
      "r467"
     ]
    },
    "ifrs-full_EquityPriceRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EquityPriceRiskMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity price risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of other price risk that represents the type of risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in equity prices. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r447",
      "r466"
     ]
    },
    "aval_EquitySecuritiesAtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EquitySecuritiesAtFairValueMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity securities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_EquityValuationAssumptionDifferenceFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "EquityValuationAssumptionDifferenceFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Valuation Assumption Difference, Footnote [Text Block]",
        "terseLabel": "Equity Valuation Assumption Difference, Footnote"
       }
      }
     },
     "auth_ref": [
      "r538"
     ]
    },
    "ecd_ErrCompAnalysisTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ErrCompAnalysisTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Erroneous Compensation Analysis [Text Block]",
        "terseLabel": "Erroneous Compensation Analysis"
       }
      }
     },
     "auth_ref": [
      "r495",
      "r506",
      "r516",
      "r549"
     ]
    },
    "ecd_ErrCompRecoveryTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ErrCompRecoveryTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Erroneously Awarded Compensation Recovery [Table]",
        "terseLabel": "Erroneously Awarded Compensation Recovery"
       }
      }
     },
     "auth_ref": [
      "r492",
      "r503",
      "r513",
      "r546"
     ]
    },
    "ifrs-full_EstimateOfContributionsExpectedToBePaidToPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EstimateOfContributionsExpectedToBePaidToPlan",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimate of contributions expected to be paid to plan for next annual reporting period"
       }
      },
      "en": {
       "role": {
        "documentation": "The estimate of the expected contributions to be made to a defined benefit plan for the next annual reporting period. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r102",
      "r104"
     ]
    },
    "ifrs-full_EstimatedFinancialEffectOfContingentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "EstimatedFinancialEffectOfContingentLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimated financial effect of contingent liabilities",
        "terseLabel": "Estimated financial effect of contingent liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]]"
       }
      }
     },
     "auth_ref": [
      "r161"
     ]
    },
    "aval_EstudiosProyectosEInversionesDeLosAndesS.a.s.YSubsidiariasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EstudiosProyectosEInversionesDeLosAndesS.a.s.YSubsidiariasMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Estudios, Proyectos e Inversiones de los Andes S.A.S. y subsidiarias [member]",
        "label": "Estudios, Proyectos e Inversiones de los Andes S.A.S. y subsidiarias [member]",
        "terseLabel": "Estudios, Proyectos e Inversiones de los Andes S.A.S. y subsidiarias"
       }
      }
     },
     "auth_ref": []
    },
    "aval_EstudiosYProyectosDelSolSasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "EstudiosYProyectosDelSolSasMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estudios y Proyectos del Sol S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ExceedsBookValueOfCashGeneratingUnit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ExceedsBookValueOfCashGeneratingUnit",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Exceeds the book value of cash generating-unit",
        "label": "Exceeds the book value of cash generating-unit",
        "terseLabel": "Exceeds the book value of cash generating-unit"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ExecutiveCategoryAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ExecutiveCategoryAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Executive Category [Axis]",
        "terseLabel": "Executive Category:"
       }
      }
     },
     "auth_ref": [
      "r544"
     ]
    },
    "aval_ExpectedCreditLossAllowancesReclassifiedFromOCIBeforeTaxToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ExpectedCreditLossAllowancesReclassifiedFromOCIBeforeTaxToProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesAmountsReclassifiedToProfitOrLossFromOciBeforeTaxesDetails": {
       "parentTag": "aval_AmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeBeforeTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesAmountsReclassifiedToProfitOrLossFromOciBeforeTaxesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expected credit loss allowance reclassified from other comprehensive income before tax to profit or loss.",
        "label": "Expected Credit Loss Allowances Reclassified From O C I Before Tax to Profit Or Loss",
        "terseLabel": "ECL allowance"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpectedCreditLossRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExpectedCreditLossRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expected credit loss rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights."
       }
      }
     },
     "auth_ref": [
      "r446",
      "r464"
     ]
    },
    "aval_ExpectedCreditLossesAllowanceAccountForCreditLossesOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ExpectedCreditLossesAllowanceAccountForCreditLossesOfFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expected credit losses allowance account for credit losses of financial assets.",
        "label": "Expected Credit Losses Allowance Account For Credit Losses Of Financial Assets",
        "terseLabel": "ECL"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpectedCreditLossesIndividuallyAssessedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExpectedCreditLossesIndividuallyAssessedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expected credit losses individually assessed [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for expected credit losses that are individually assessed. [Refer: Method of assessment of expected credit losses [domain]]"
       }
      }
     },
     "auth_ref": [
      "r441",
      "r444",
      "r462"
     ]
    },
    "ifrs-full_ExpenseByNature": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExpenseByNature",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expenses, by nature",
        "negatedTotalLabel": "Total Expenses",
        "terseLabel": "Expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expenses aggregated according to their nature (for example, depreciation, purchases of materials, transport costs, employee benefits and advertising costs), and not reallocated among functions within the entity."
       }
      }
     },
     "auth_ref": [
      "r63"
     ]
    },
    "ifrs-full_ExpenseByNatureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExpenseByNatureAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expenses by nature [abstract]",
        "verboseLabel": "Expenses"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpenseRelatingToLeasesOfLowvalueAssetsForWhichRecognitionExemptionHasBeenUsed": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExpenseRelatingToLeasesOfLowvalueAssetsForWhichRecognitionExemptionHasBeenUsed",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expense relating to leases of low-value assets for which recognition exemption has been used",
        "negatedLabel": "Leases (Rent)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the expense relating to leases of low-value assets accounted for applying paragraph 6 of IFRS 16. This expense shall not include the expense relating to short-term leases of low-value assets."
       }
      }
     },
     "auth_ref": [
      "r265"
     ]
    },
    "ifrs-full_ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExplanationOfFinancialEffectOfNonadjustingEventAfterReportingPeriod",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Explanation of financial effect of non-adjusting event after reporting period [text block]",
        "terseLabel": "Schedule for the effects of the previous transaction"
       }
      },
      "en": {
       "role": {
        "documentation": "The explanation of either an estimate of the financial effect of a non-adjusting event after the reporting period or a statement that such an estimate cannot be made."
       }
      }
     },
     "auth_ref": [
      "r65"
     ]
    },
    "ifrs-full_ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Explanation of period over which management has projected cash flows"
       }
      },
      "en": {
       "role": {
        "documentation": "The explanation of the period over which management has projected cash flows based on financial budgets/forecasts approved by management including, when a period greater than five years is used for a cash-generating unit (group of units), an explanation of why that longer period is justified. [Refer: Total for all cash-generating units [member]]"
       }
      }
     },
     "auth_ref": [
      "r145",
      "r149"
     ]
    },
    "aval_ExplanationOfPeriodOverWhichManagementHasProjectedCashFlowsPeriod": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ExplanationOfPeriodOverWhichManagementHasProjectedCashFlowsPeriod",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Explanation of period over which management has projected cash flows, period",
        "label": "Explanation of period over which management has projected cash flows, period",
        "terseLabel": "Explanation of period over which management has projected cash flows, period"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ExploitationOfMinesAndQuarriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ExploitationOfMinesAndQuarriesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Exploitation of mines and quarries [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails": {
       "parentTag": "ifrs-full_MaximumExposureToCreditRisk",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Exposure to credit risk on loan commitments and financial guarantee contracts",
        "terseLabel": "Exposure to credit risk outside of the statement of financial position"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the exposure to credit risk on loan commitments and financial guarantee contracts. [Refer: Loan commitments [member]; Financial guarantee contracts [member]; Credit risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r330",
      "r331",
      "r337"
     ]
    },
    "aval_ExternalIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ExternalIncomeAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "External Income [Abstract]",
        "terseLabel": "Income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FairValueAdjustmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FairValueAdjustmentsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "na",
        "label": "Fair Value adjustments [Abstract]",
        "terseLabel": "Net (gains) or losses on fair value adjustments of:"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FairValueAssetsTransfersFromLevel2ToLevel3": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FairValueAssetsTransfersFromLevel2ToLevel3",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of fair value asset, transfers from level 2 to level 3.",
        "label": "Fair Value, Assets, Transfers From Level 2 To Level 3",
        "terseLabel": "Transfers from level 2 to level 3"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FairValueMeasurementAssetsDisposedDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FairValueMeasurementAssetsDisposedDiscontinuedOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value measurement assets disposed discontinued operations",
        "label": "Fair value measurement, assets, disposed, discontinued operations",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FairValueMeasurementAssetsLossOfControlInSubsidiary": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FairValueMeasurementAssetsLossOfControlInSubsidiary",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value measurement assets loss of control in subsidiary",
        "label": "Fair value measurement, assets, loss of control in subsidiary",
        "terseLabel": "Loss of control in subsidiary"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FavorableScenarioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FavorableScenarioMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Favorable scenario"
       }
      }
     },
     "auth_ref": []
    },
    "srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Federal Home Loan Bank Branch [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Federal Home Loan Bank Branch [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FeeAndCommissionExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FeeAndCommissionExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_FeeAndCommissionIncomeExpense",
       "weight": -1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 6.0
      },
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee and commission expense",
        "negatedLabel": "Expenses from commissions and fees",
        "negatedTerseLabel": "Fee expenses and commissions",
        "negatedTotalLabel": "Total expenses from commissions and fees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense relating to fees and commissions."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "ifrs-full_FeeAndCommissionIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FeeAndCommissionIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_FeeAndCommissionIncomeExpense",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee and commission income",
        "terseLabel": "Fee income and commissions",
        "totalLabel": "Total income from commissions and fees",
        "verboseLabel": "Income from commissions and fees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income relating to fees and commissions."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "ifrs-full_FeeAndCommissionIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FeeAndCommissionIncomeExpense",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee and commission income (expense)",
        "totalLabel": "Net income from commissions and fees",
        "verboseLabel": "Net income from commissions and fees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income or expense relating to fees and commissions."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "aval_FeesPaidToPensionFundsSalesForces": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FeesPaidToPensionFundsSalesForces",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionExpense",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fees paid to pension funds sales force",
        "label": "Fees paid to pension funds sales forces",
        "negatedLabel": "Fees paid to pension funds sales force"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FiduciariaBogotaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FiduciariaBogotaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fiduciaria Bogota S.A"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FiduciariaCorficolombianaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FiduciariaCorficolombianaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fiduciaria Corficolombiana S.A. [member]",
        "label": "Fiduciaria Corficolombiana SA [member]",
        "terseLabel": "Fiduciaria Corficolombiana S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_FiduciariaDeOccidenteSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FiduciariaDeOccidenteSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fiduciaria de Occidente S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_FiduciariaPopularSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FiduciariaPopularSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fiduciaria Popular S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinanceAssetsLiabilitiesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinanceAssetsLiabilitiesNet",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the amount of net financial asset (liability)",
        "label": "Finance Assets Liabilities Net",
        "terseLabel": "Net financial asset (liability) position",
        "totalLabel": "Net position"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinanceCosts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinanceCosts",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finance costs",
        "negatedTerseLabel": "Finance expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of costs associated with financing activities of the entity."
       }
      }
     },
     "auth_ref": [
      "r50"
     ]
    },
    "aval_FinancialAndInsuranceActivitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAndInsuranceActivitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to Financial and insurance activities.",
        "label": "Financial And Insurance Activities [member]",
        "terseLabel": "Financial and insurance activities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails": {
       "parentTag": "aval_FinanceAssetsLiabilitiesNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets",
        "negatedLabel": "Financial assets",
        "negatedPeriodEndLabel": "Ending balance",
        "negatedPeriodStartLabel": "Beginning balance",
        "periodEndLabel": "Financial assets at end of period",
        "periodStartLabel": "Financial assets at beginning of period",
        "terseLabel": "Financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity\u2019s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity\u2019s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity\u2019s own equity instruments. For this purpose the entity\u2019s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity\u2019s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r323",
      "r330",
      "r331",
      "r337",
      "r446"
     ]
    },
    "ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtAmortisedCostCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at amortised cost, category [member]",
        "terseLabel": "Financial assets at amortised cost, category"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at amortised cost category. [Refer: Financial assets at amortised cost]"
       }
      }
     },
     "auth_ref": [
      "r345"
     ]
    },
    "ifrs-full_FinancialAssetsAtAmortisedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtAmortisedCostMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at amortised cost, class [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets measured at amortised cost class. [Refer: Financial assets at amortised cost]"
       }
      }
     },
     "auth_ref": [
      "r351"
     ]
    },
    "aval_FinancialAssetsAtCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsAtCost",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets at cost",
        "label": "Financial assets at cost",
        "terseLabel": "Cost"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets, at fair value",
        "terseLabel": "Fair Value",
        "verboseLabel": "Financial assets at fair value"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of financial assets. [Refer: At fair value [member]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r323"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value, class [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets measured at fair value class. [Refer: Financial assets; At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r351"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through other comprehensive income, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at fair value through other comprehensive income category. [Refer: Financial assets at fair value through other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r347"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r343"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at fair value through profit or loss category. [Refer: Financial assets at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r343"
     ]
    },
    "aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldEquitySecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldEquitySecurities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of financial assets at fair value through profit or loss classified as held for trading. A financial asset is classified as held for trading if: (a) it is acquired principally for the purpose of selling it in the near term; (b) on initial recognition it is part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking; or (c) it is a derivative (except for a derivative that is a financial guarantee contract or a designated and effective hedging instrument). [Refer: At fair value [member]; Financial assets at fair value through profit or loss]",
        "label": "Financial assets at fair value through profit or loss classified as held equity securities",
        "terseLabel": "Financial assets at fair value through profit or loss classified as held equity securities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, classified as held for trading",
        "terseLabel": "Trading assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets at fair value through profit or loss classified as held for trading. A financial asset is classified as held for trading if: (a) it is acquired principally for the purpose of selling it in the near term; (b) on initial recognition it is part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking; or (c) it is a derivative (except for a derivative that is a financial guarantee contract or a designated and effective hedging instrument). [Refer: At fair value [member]; Financial assets at fair value through profit or loss, mandatorily measured at fair value]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryInternationalFinancialReportingStandards9Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]",
        "label": "Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member]",
        "terseLabel": "Held for trading"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]",
        "terseLabel": "Financial assets at fair value through profit or loss, mandatorily measured at fair value, category"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets mandatorily measured at fair value through profit or loss category. [Refer: Financial assets at fair value through profit or loss, mandatorily measured at fair value]"
       }
      }
     },
     "auth_ref": [
      "r343"
     ]
    },
    "ifrs-full_FinancialAssetsHeldForManagingLiquidityRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsHeldForManagingLiquidityRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets held for managing liquidity risk",
        "terseLabel": "Liquid assets",
        "verboseLabel": "Liquidity management"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets held for managing liquidity risk (for example, financial assets that are readily saleable or expected to generate cash inflows to meet cash outflows on financial liabilities). [Refer: Liquidity risk [member]; Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r350"
     ]
    },
    "aval_FinancialAssetsHeldForManagingLiquidityRiskLiabilityBalance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsHeldForManagingLiquidityRiskLiabilityBalance",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets held for managing liquidity risk, liability balance",
        "label": "Financial assets held for managing liquidity risk, liability balance",
        "negatedLabel": "Liquid assets (liabilities)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsIdentifiableCollateralCarryingAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsIdentifiableCollateralCarryingAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets, identifiable collateral, carrying amount",
        "label": "Financial assets, identifiable collateral, carrying amount",
        "terseLabel": "Financial assets, identifiable collateral, carrying amount"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsIdentifiableCollateralFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsIdentifiableCollateralFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets, identifiable collateral, fair value",
        "label": "Financial assets, identifiable collateral, fair value",
        "terseLabel": "Financial assets, identifiable collateral, fair value"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsInConcessionArrangementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsInConcessionArrangementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets in concession arrangements.",
        "label": "Financial Assets In Concession Arrangement [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsInConcessionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsInConcessionMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Financial Assets In Concession [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsInInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsInInvestments",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of financial assets in investments in subsidiaries, joint ventures and associates, individuals in an entity's separate financial statements.",
        "label": "Financial assets in investments",
        "verboseLabel": "Financial assets in investments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsInWorkInProgress": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsInWorkInProgress",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets in work in progress",
        "label": "Financial assets, in work in progress",
        "terseLabel": "Financial assets, in work in progress"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsLoansCollateralGuarantees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsLoansCollateralGuarantees",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets, loans, collateral guarantees",
        "label": "Financial assets, loans, collateral guarantees",
        "terseLabel": "Financial assets, loans, collateral guarantees"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsLoansGrossCarryingAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsLoansGrossCarryingAmount",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_LoansAndReceivablesNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets, loans, gross carrying amount",
        "label": "Financial assets, loans, gross carrying amount",
        "totalLabel": "Loans"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsLoansLossAllowance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsLoansLossAllowance",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_LoansAndReceivablesNet",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial assets, loans, loss allowance",
        "label": "Financial assets, loans, loss allowance",
        "negatedLabel": "Loss allowance"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets measured at fair value through other comprehensive income, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at fair value through other comprehensive income category. [Refer: Financial assets measured at fair value through other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r347"
     ]
    },
    "ifrs-full_FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets pledged as collateral for liabilities or contingent liabilities",
        "terseLabel": "Financial assets pledged as collateral",
        "verboseLabel": "Financial assets pledged as collateral"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r304"
     ]
    },
    "aval_FinancialAssetsUnrealisedGains": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsUnrealisedGains",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of unrealized gain on investment securities measured at fair value recognized in other comprehensive income.",
        "label": "Financial assets, unrealised gains",
        "terseLabel": "Unrealized Gain"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialAssetsUnrealisedLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialAssetsUnrealisedLosses",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of unrealized loss on investment securities measured at fair value recognized in other comprehensive income.",
        "label": "Financial assets, unrealised losses",
        "negatedLabel": "Unrealized Losses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialEntitiesDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialEntitiesDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Entities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialGuaranteeContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialGuaranteeContractsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial guarantee contracts [member]",
        "terseLabel": "Guarantees"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for contracts that require the issuer to make specified payments to reimburse the holder for a loss it incurs because a specified debtor fails to make payment when due in accordance with the original or modified terms of a debt instrument."
       }
      }
     },
     "auth_ref": [
      "r337",
      "r353"
     ]
    },
    "ifrs-full_FinancialInstrumentsCreditimpairedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialInstrumentsCreditimpairedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments credit-impaired [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments that are credit-impaired. [Refer: Credit impairment of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337"
     ]
    },
    "ifrs-full_FinancialInstrumentsNotCreditimpairedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialInstrumentsNotCreditimpairedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments not credit-impaired [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments that are not credit-impaired. [Refer: Credit impairment of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337"
     ]
    },
    "ifrs-full_FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial assets",
        "negatedLabel": "Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r438",
      "r468"
     ]
    },
    "ifrs-full_FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities",
        "negatedLabel": "Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r438",
      "r468"
     ]
    },
    "ifrs-full_FinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails": {
       "parentTag": "aval_FinanceAssetsLiabilitiesNet",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities",
        "terseLabel": "Financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity\u2019s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity\u2019s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity\u2019s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity\u2019s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity\u2019s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity\u2019s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Classes of financial instruments [domain]; Financial assets; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r323"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtAmortisedCostCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at amortised cost, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial liabilities at amortised cost category. [Refer: Financial liabilities at amortised cost]"
       }
      }
     },
     "auth_ref": [
      "r346"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtAmortisedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtAmortisedCostMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at amortised cost, class [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial liabilities measured at amortised cost class. [Refer: Financial liabilities at amortised cost]"
       }
      }
     },
     "auth_ref": [
      "r351"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities, at fair value",
        "terseLabel": "Financial liabilities at fair value"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r323"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValueMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at fair value, class [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial liabilities measured at fair value class. [Refer: Financial liabilities; At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r351"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at fair value through profit or loss, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial liabilities at fair value through profit or loss category. [Refer: Financial liabilities at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r344"
     ]
    },
    "aval_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for financial liabilities at fair value through profit or loss, classified as held for trading, category.",
        "label": "Financial liabilities at fair value through profit or loss, classified as held for trading, category [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialLiabilitiesAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialLiabilitiesAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial liabilities at fair value through profit or loss, mandatorily measured at fair value, category [member]",
        "label": "Financial liabilities at fair value through profit or loss, mandatorily measured at fair value, category [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialObligationsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialObligationsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial obligations [Abstract]",
        "terseLabel": "Financial obligations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialObligationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialObligationsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialLiabilitiesRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial obligation.",
        "label": "Financial obligations [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialObligationsSimultaneousAndRepoOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialObligationsSimultaneousAndRepoOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of financial obligations associated with simultaneous and repo operation.",
        "label": "Financial Obligations, Simultaneous and Repo Operations",
        "terseLabel": "Simultaneous and repo operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialSubsidiariesBasisPointsOfRegulatoryCapital": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialSubsidiariesBasisPointsOfRegulatoryCapital",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Basis point refers to a common unit of measure for interest rates and other percentages in finance.",
        "label": "Financial Subsidiaries, Basis Points of Regulatory Capital",
        "verboseLabel": "Basis points of regulatory capital (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancialTransactionTaxLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancialTransactionTaxLiability",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial transaction tax liability",
        "label": "Financial transaction tax liability",
        "terseLabel": "Financial transactions tax"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancieraDeDesarrolloTerritorialFindeterMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancieraDeDesarrolloTerritorialFindeterMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financiera de Desarrollo Territorial, FINDETER [member]",
        "label": "Financiera de Desarrollo Territorial, FINDETER [member]",
        "terseLabel": "Financiera de Desarrollo Territorial \"FINDETER\""
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancingReceivablesByEconomicSectorAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancingReceivablesByEconomicSectorAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Receivables by Economic Sector [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancingReceivablesByObjectiveAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancingReceivablesByObjectiveAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing receivables by objective [axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FinancingReceivablesByObjectiveDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FinancingReceivablesByObjectiveDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing receivables by objective [domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FixedInterestRateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FixedInterestRateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fixed interest rate [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a fixed interest rate. [Refer: Interest rate risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r628"
     ]
    },
    "aval_FlattenerShockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FlattenerShockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for flattener shock, where there is a flattening shift of the yield curve, with positive interest rate shocks for shorter maturities and negative interest rate shocks for longer maturities.",
        "label": "Flattener Shock [Member]",
        "terseLabel": "Flattening shock (short-term rates up, long-term rates down)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FloatingInterestRateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FloatingInterestRateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Floating interest rate [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a non-fixed interest rate. [Refer: Interest rate risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r628"
     ]
    },
    "aval_FondoParaElFinanciamientoDelSectorAgropecuarioFinagroMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FondoParaElFinanciamientoDelSectorAgropecuarioFinagroMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fondo para el Financiamiento del Sector Agropecuario - FINAGRO [member]",
        "label": "Fondo para el Financiamiento del Sector Agropecuario - FINAGRO [member]",
        "terseLabel": "Fondo para el Financiamiento del Sector Agropecuario - \"FINAGRO\""
       }
      }
     },
     "auth_ref": []
    },
    "aval_FoodBeverageAndTobaccoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FoodBeverageAndTobaccoMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Food, beverage and tobacco"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForeclosedAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForeclosedAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Foreclosed assets [member]",
        "label": "Foreclosed assets [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForeclosedFinancialAssetsReceived": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForeclosedFinancialAssetsReceived",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsForeclosedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of foreclosed financial assets received",
        "label": "Foreclosed Financial Assets Received",
        "terseLabel": "Foreclosed assets received"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForeclosedFinancialAssetsSold": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForeclosedFinancialAssetsSold",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsForeclosedAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Foreclosed Financial Assets Sold",
        "label": "Foreclosed Financial Assets Sold",
        "terseLabel": "Foreclosed assets sold"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ForeignCountriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ForeignCountriesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign countries [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for countries outside the entity's country of domicile. [Refer: Country of domicile [member]]"
       }
      }
     },
     "auth_ref": [
      "r373",
      "r374"
     ]
    },
    "aval_ForeignCurrencyBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForeignCurrencyBondsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Foreign currency bonds",
        "label": "Foreign currency bonds [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForeignCurrencyFinancialLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForeignCurrencyFinancialLiabilitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Foreign currency financial liabilities.",
        "label": "Foreign Currency Financial Liabilities [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForeignCurrencyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForeignCurrencyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign currency [member]",
        "terseLabel": "Foreign currency"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForeignGovernmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForeignGovernmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign governments [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Disqualification of Tax Benefits, Amount",
        "terseLabel": "Forgone Recovery due to Disqualification of Tax Benefits, Amount"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r553"
     ]
    },
    "ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ForgoneRecoveryDueToExpenseOfEnforcementAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Expense of Enforcement, Amount",
        "terseLabel": "Forgone Recovery due to Expense of Enforcement, Amount"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r553"
     ]
    },
    "ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ForgoneRecoveryDueToViolationOfHomeCountryLawAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Violation of Home Country Law, Amount",
        "terseLabel": "Forgone Recovery due to Violation of Home Country Law, Amount"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r553"
     ]
    },
    "ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ForgoneRecoveryExplanationOfImpracticabilityTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery, Explanation of Impracticability [Text Block]",
        "terseLabel": "Forgone Recovery, Explanation of Impracticability"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r553"
     ]
    },
    "ecd_ForgoneRecoveryIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "ForgoneRecoveryIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r553"
     ]
    },
    "aval_ForwardContractDebtSecuritiesToBuyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForwardContractDebtSecuritiesToBuyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to forward contracts, debt securities to buy.",
        "label": "Forward contracts, Debt securities to buy"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForwardContractDebtSecuritiesToSellMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForwardContractDebtSecuritiesToSellMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to forward contracts, debt securities to sell.",
        "label": "Forward contracts, Debt securities to sell"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForwardContractForeignCurrencyToBuyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForwardContractForeignCurrencyToBuyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to forward contracts, foreign currency to buy.",
        "label": "Forward contracts, Foreign currency to buy"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ForwardContractForeignCurrencyToSellMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ForwardContractForeignCurrencyToSellMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to forward contracts, foreign currency to sell.",
        "label": "Forward contracts, Foreign currency to sell"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ForwardContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ForwardContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forward contract [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a contract between two parties for the purchase or sale of an underlying asset at a specified future date for a settlement price determined in advance."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]",
        "terseLabel": "Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year"
       }
      }
     },
     "auth_ref": [
      "r533"
     ]
    },
    "aval_FundsManagedByOtherEntitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FundsManagedByOtherEntitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Funds managed by other entities",
        "label": "Funds managed by other entities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FutureFinanceChargeOnFinanceLeaseIFRS16": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FutureFinanceChargeOnFinanceLeaseIFRS16",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount representing the difference between the future minimum finance lease payments and their present value. Minimum lease payments are payments over the lease term that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee as per IFRS 16.",
        "label": "Future Finance Charge On Finance Lease I F R S 16",
        "negatedLabel": "Less amounts representing running costs (such as taxes, maintenance, insurances ,etc.,)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_FuturesContractInterestRateToSellMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "FuturesContractInterestRateToSellMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to future contracts, interest rate to sell",
        "label": "Futures Contract, Interest rate to sell"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FuturesContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "FuturesContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Futures contract [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a standardised, exchange-traded contract for the purchase or sale of an underlying asset at a specified future date for a settlement price determined in advance."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "country_GT": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "GT",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "GUATEMALA"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainLossOnAssetValuationNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainLossOnAssetValuationNet",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gain (loss) on asset valuation, net",
        "label": "Gain (loss) on asset valuation, net",
        "terseLabel": "Net gain on asset valuation",
        "verboseLabel": "Net gain in asset valuation"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainLossOnChangeInFairValueOfHedgingInstrumentUsedAsBasisForRecognisingHedgeIneffectiveness": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainLossOnChangeInFairValueOfHedgingInstrumentUsedAsBasisForRecognisingHedgeIneffectiveness",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (loss) on change in fair value of hedging instrument used as basis for recognising hedge ineffectiveness",
        "terseLabel": "Change in fair value"
       }
      },
      "en": {
       "role": {
        "documentation": "The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item."
       }
      }
     },
     "auth_ref": [
      "r313"
     ]
    },
    "aval_GainLossOnDiscontinuanceNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainLossOnDiscontinuanceNetOfTax",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gain (loss) on discontinuance, net of tax",
        "label": "Gain (Loss) on Discontinuance, Net of Tax",
        "verboseLabel": "Net income net, tax expense"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income",
        "totalLabel": "Total changes in actuarial assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r95"
     ]
    },
    "ifrs-full_GainOnRecoveryOfLoansAndAdvancesPreviouslyWrittenOff": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainOnRecoveryOfLoansAndAdvancesPreviouslyWrittenOff",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ImpairmentLoss",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain on recovery of loans and advances previously written off",
        "terseLabel": "Recovery of charged-off financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The gain on the recovery of loans and advances previously written off."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "aval_GainOrLossThroughExchangeDifference": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainOrLossThroughExchangeDifference",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of gain or loss due to exchange difference.",
        "label": "Gain or Loss through exchange difference",
        "verboseLabel": "Exchange difference"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnCashFlowHedgesBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on cash flow hedges, before tax",
        "terseLabel": "Cash flow hedges"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on cash flow hedges, before tax, before reclassification adjustments. [Refer: Cash flow hedges [member]]"
       }
      }
     },
     "auth_ref": [
      "r57"
     ]
    },
    "ifrs-full_GainsLossesOnCashFlowHedgesNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnCashFlowHedgesNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on cash flow hedges, net of tax",
        "terseLabel": "Cash flow hedges"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on cash flow hedges, net of tax, before reclassification adjustments. [Refer: Cash flow hedges [member]]"
       }
      }
     },
     "auth_ref": [
      "r56",
      "r318",
      "r321"
     ]
    },
    "ifrs-full_GainsLossesOnDisposalsOfInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnDisposalsOfInvestments",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on disposals of investments",
        "terseLabel": "Net gain on sale of debt and equity securities",
        "verboseLabel": "Net gain (loss) on sale of debt and equity securities"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) on disposals of investments."
       }
      }
     },
     "auth_ref": [
      "r61"
     ]
    },
    "ifrs-full_GainsLossesOnDisposalsOfNoncurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnDisposalsOfNoncurrentAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on disposals of non-current assets",
        "verboseLabel": "Gains on the sale of non-current assets held for sale"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) on disposals of non-current assets. [Refer: Non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails": {
       "parentTag": "ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on exchange differences on translation of foreign operations, hedged, before tax",
        "label": "Gains (losses) on exchange differences on translation of foreign operations, hedged, before tax",
        "terseLabel": "Net gain (loss) on hedges of net investments in foreign operations - Hedged items",
        "verboseLabel": "Hedged Items"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsHedgedNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on exchange differences on translation of foreign operations, hedged, net of tax",
        "label": "Gains (losses) on exchange differences on translation of foreign operations, hedged, net of tax",
        "terseLabel": "Net gain (loss) on hedges of net investments in foreign operations - Foreign currency translation differences from hedged foreign operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsUnhedgedBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsUnhedgedBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 4.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on exchange differences on translation of foreign operations, unhedged, before tax",
        "label": "Gains (losses) on exchange differences on translation of foreign operations, unhedged, before tax",
        "terseLabel": "Foreign currency translation differences from unhedged foreign operations",
        "verboseLabel": "Foreign currency translation differences for foreign operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsUnhedgedNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationOfForeignOperationsUnhedgedNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on exchange differences on translation of foreign operations, unhedged, net of tax",
        "label": "Gains (losses) on exchange differences on translation of foreign operations, unhedged, net of tax",
        "terseLabel": "Foreign currency translation differences for foreign operations"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign exchange gain (loss)",
        "terseLabel": "Foreign exchange gain (loss), net",
        "verboseLabel": "Foreign exchange gains (losses), net"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r11",
      "r106"
     ]
    },
    "aval_GainsLossesOnFairValueAdjustmentTangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnFairValueAdjustmentTangibleAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to gains losses on fair value adjustment of tangible assets.",
        "label": "Gains (losses) on fair value adjustment, tangible assets",
        "terseLabel": "Change in fair value"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 5.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on financial assets measured at fair value through other comprehensive income, before tax",
        "terseLabel": "Unrealized (losses) gains on securities at FVOCI - Debt financial instruments",
        "verboseLabel": "Unrealized gains on debt securities at FVOCI"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9, before tax, before reclassification adjustments. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r57",
      "r306"
     ]
    },
    "ifrs-full_GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax",
        "terseLabel": "Debt financial instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9, net of tax, before reclassification adjustments. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r56"
     ]
    },
    "ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on hedges of net investments in foreign operations, before tax",
        "totalLabel": "Net OCI account"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on hedges of net investments in foreign operations, before tax, before reclassification adjustments. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r57",
      "r176",
      "r378"
     ]
    },
    "aval_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails": {
       "parentTag": "ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on hedges of net investments in foreign operations, derivative instruments, before tax",
        "label": "Gains (losses) on hedges of net investments in foreign operations, derivative instruments, before tax",
        "netLabel": "Hedging derivative instruments",
        "terseLabel": "Net gain (loss) on hedges of net investments in foreign operations - Hedging derivative instrument",
        "verboseLabel": "Hedging derivatives in foreign currency"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on hedges of net investments in foreign operations, derivative instruments, net of tax",
        "label": "Gains (losses) on hedges of net investments in foreign operations, derivative instruments, net of tax",
        "terseLabel": "Net gain (loss) on hedges of net investments in foreign operations - Hedging derivative instrument"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsHedgedItemCurrentAmountBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsHedgedItemCurrentAmountBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails": {
       "parentTag": "ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on hedges of net investments in foreign operations, hedged item, current amount, before tax",
        "label": "Gains (losses) on hedges of net investments in foreign operations, hedged item, current amount, before tax",
        "terseLabel": "Current amount hedged item"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsHedgingDerivativeInstrumentCurrentAmountBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsHedgingDerivativeInstrumentCurrentAmountBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails": {
       "parentTag": "ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on hedges of net investments in foreign operations, hedging derivative instrument, current amount, before tax",
        "label": "Gains (losses) on hedges of net investments in foreign operations, hedging derivative instrument, current amount, before tax",
        "terseLabel": "Current amount hedging derivative instrument"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsHedgingNonDerivativeInstrumentCurrentAmountBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsHedgingNonDerivativeInstrumentCurrentAmountBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails": {
       "parentTag": "ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on hedges of net investments in foreign operations, hedging non-derivative instrument, current amount, before tax",
        "label": "Gains (losses) on hedges of net investments in foreign operations, hedging non-derivative instrument, current amount, before tax",
        "terseLabel": "Current amount hedging non-derivative instrument"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNonDerivativeInstrumentsBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNonDerivativeInstrumentsBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails": {
       "parentTag": "ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on hedges of net investments in foreign operations, non-derivative instruments, before tax",
        "label": "Gains (losses) on hedges of net investments in foreign operations, non-derivative instruments, before tax",
        "netLabel": "Hedging non-derivative instruments",
        "terseLabel": "Net gain (loss) on hedges of net investments in foreign operations - Hedging non-derivative instrument",
        "verboseLabel": "Hedging financial liabilities in foreign currency"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNonDerivativeInstrumentsNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNonDerivativeInstrumentsNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gains (losses) on hedges of net investments in foreign operations, non-derivative instruments, net of tax",
        "label": "Gains (losses) on hedges of net investments in foreign operations, non-derivative instruments, net of tax",
        "terseLabel": "Net gain (loss) on hedges of net investments in foreign operations - Hedging non-derivative instrument"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementAssets",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) recognised in other comprehensive income including exchange differences, fair value measurement, assets",
        "verboseLabel": "Changes in fair value recognised in OCI"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) including exchange differences recognised in other comprehensive income on the fair value measurement of assets. [Refer: At fair value [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r245"
     ]
    },
    "ifrs-full_GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets",
        "netLabel": "Adjustment to fair value",
        "terseLabel": "Net income from other financial instruments mandatorily at fair value through profit or loss",
        "verboseLabel": "Changes in fair value recognised in profit or loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) including exchange differences recognised in profit or loss on the fair value measurement of assets. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r244"
     ]
    },
    "ifrs-full_GainsOnDisposalsOfPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GainsOnDisposalsOfPropertyPlantAndEquipment",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains on disposals of property, plant and equipment",
        "terseLabel": "Gains on sale of properties, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The gain on the disposal of property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r60"
     ]
    },
    "aval_GasNaturalDeLimaYCallaoSaCaliddaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GasNaturalDeLimaYCallaoSaCaliddaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gas Natural de Lima y Callao S.A. - Calidda [member]",
        "label": "Gas Natural de Lima y Callao SA - Calidda [member]",
        "terseLabel": "Gas Natural de Lima y Callao S.A. - Calidda"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GasNaturalDeLimaYCallaoSacCaliddaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GasNaturalDeLimaYCallaoSacCaliddaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gas Natural de Lima y Callao S.A.C. - Calidda [member]",
        "label": "Gas Natural de Lima y Callao SAC - Calidda [member]",
        "terseLabel": "Gas Natural de Lima y Callao S.A.C. - Calidda"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GasPipelinesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GasPipelinesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gas pipelines.",
        "label": "Gas Pipelines [Member]",
        "terseLabel": "Gas pipelines"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GasesDeOccidenteS.a.E.s.pMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GasesDeOccidenteS.a.E.s.pMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Gases de Occidente S.A. E.S.P.",
        "label": "Gases de Occidente S.A. E.S.P"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GasesDelCaribeSaEspMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GasesDelCaribeSaEspMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gases del Caribe S.A. E.S.P. [member]",
        "label": "Gases del Caribe SA ESP [member]",
        "terseLabel": "Gases del Caribe S.A. E.S.P."
       }
      }
     },
     "auth_ref": []
    },
    "aval_GasesDelNorteDelPeruS.a.c.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GasesDelNorteDelPeruS.a.c.Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Gases del Norte del Peru S.A.C."
       }
      }
     },
     "auth_ref": []
    },
    "aval_GasesDelPacificoSacMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GasesDelPacificoSacMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gases del Pacifico S.A.C. [member]",
        "label": "Gases del Pacifico SAC [member]",
        "terseLabel": "Gases del Pacifico S.A.C."
       }
      }
     },
     "auth_ref": []
    },
    "aval_GdpGrowthPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GdpGrowthPercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "GDP growth, percentage",
        "label": "GDP growth, percentage",
        "terseLabel": "GDP Growth"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GdpGrowthPercentageOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GdpGrowthPercentageOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "GDP growth, percentage, one-year projection",
        "label": "GDP growth, percentage, one-year projection",
        "terseLabel": "GDP Growth, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GeneralAndAdministrativeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GeneralAndAdministrativeExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "General and administrative expense",
        "negatedLabel": "General and administrative expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense relating to general and administrative activities of the entity."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_GeneralPurposeLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GeneralPurposeLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "General purpose loans [member]",
        "terseLabel": "General purpose loans"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GeographicalAreasAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GeographicalAreasAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Geographical areas [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r375",
      "r401",
      "r429",
      "r434"
     ]
    },
    "ifrs-full_GeographicalAreasDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GeographicalAreasDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Geographical areas [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated geographical areas. It also represents the standard value for the 'Geographical areas' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r375",
      "r401",
      "r429",
      "r434"
     ]
    },
    "ifrs-full_GoodsOrServicesTransferredAtPointInTimeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GoodsOrServicesTransferredAtPointInTimeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goods or services transferred at point in time [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for goods or services transferred to customers at a point in time. [Refer: Performance obligations satisfied at point in time [member]]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_GoodsOrServicesTransferredOverTimeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GoodsOrServicesTransferredOverTimeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goods or services transferred over time [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for goods or services transferred to customers over time. [Refer: Performance obligations satisfied over time [member]]"
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_Goodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Goodwill",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_IntangibleAssetsAndGoodwill",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillRollForwardTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill",
        "periodEndLabel": "Balance at the end of the year",
        "periodStartLabel": "Balance at the beginning of the year",
        "terseLabel": "Goodwill carrying amount",
        "verboseLabel": "Goodwill"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r15",
      "r144",
      "r154",
      "r290"
     ]
    },
    "aval_GoodwillAndOtherIntangiblesDeductionsFromRegulatoryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GoodwillAndOtherIntangiblesDeductionsFromRegulatoryCapital",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Goodwill and other intangibles, deductions from regulatory capital",
        "label": "Goodwill and other intangibles, deductions from regulatory capital",
        "negatedLabel": "Goodwill and other intangibles"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GoodwillMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GoodwillMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for goodwill. [Refer: Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r404"
     ]
    },
    "aval_GoodwillSensitivityRecoverableValueIfDiscountRate0.5PercentHigher": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GoodwillSensitivityRecoverableValueIfDiscountRate0.5PercentHigher",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Goodwill sensitivity recoverable value if discount rate 0.5 percent higher",
        "label": "Goodwill sensitivity recoverable value if discount rate 0.5 percent higher",
        "terseLabel": "Recoverable value if discount rate was 0.5% higher"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GovernmentAndColombianGovernmentEntitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GovernmentAndColombianGovernmentEntitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Government and Colombian Government entities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GovernmentDebtInstrumentsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GovernmentDebtInstrumentsHeld",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Government debt instruments held",
        "verboseLabel": "Central Government debt instruments held"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of debt instruments, including instruments called debt securities, held by the entity that were issued by a government. [Refer: Debt instruments held; Government [member]]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_GovernmentDebtInstrumentsHeldPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GovernmentDebtInstrumentsHeldPercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of government issued debt instruments held by entity.",
        "label": "Government debt instruments held, Percentage",
        "verboseLabel": "Central Government debt instruments held, Percentage"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GovernmentReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GovernmentReceivable",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of receivables that are derived from government contracts.",
        "label": "Government Receivable",
        "terseLabel": "Government"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GradientMethodMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GradientMethodMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gradient method.",
        "label": "Gradient Method [Member]",
        "terseLabel": "Gradient"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GrossCarryingAmountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GrossCarryingAmountMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross carrying amount [member]",
        "terseLabel": "Gross carrying amount",
        "verboseLabel": "Cost"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the amount at which an asset is recognised before deducting any accumulated depreciation (amortisation) and accumulated impairment losses thereon. [Refer: Depreciation and amortisation expense; Impairment loss]"
       }
      }
     },
     "auth_ref": [
      "r79",
      "r165",
      "r185",
      "r189",
      "r290",
      "r331",
      "r337",
      "r446"
     ]
    },
    "aval_GrossEmployeeBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrossEmployeeBenefits",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails": {
       "parentTag": "ifrs-full_RecognisedLiabilitiesDefinedBenefitPlan",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of gross deficit in a defined benefit plan.",
        "label": "Gross Employee Benefits",
        "terseLabel": "Gross employee benefits"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross financial assets subject to offsetting, enforceable master netting arrangements or similar agreements",
        "terseLabel": "Gross financial assets subject to offsetting, enforceable master netting arrangements or similar agreements"
       }
      },
      "en": {
       "role": {
        "documentation": "The gross amount of recognised financial assets that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r300"
     ]
    },
    "ifrs-full_GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements",
        "terseLabel": "Gross financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements"
       }
      },
      "en": {
       "role": {
        "documentation": "The gross amount of recognised financial liabilities that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r300"
     ]
    },
    "aval_GrossInvestmentInFinanceLease": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrossInvestmentInFinanceLease",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gross investment in finance lease",
        "label": "Gross investment in finance lease",
        "terseLabel": "Gross investment in contracts of financial leasing",
        "verboseLabel": "Gross investment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GrossLoanCommitments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GrossLoanCommitments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross loan commitments",
        "terseLabel": "Commitments loans"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of contractual undiscounted cash flows for gross commitments to receive a loan."
       }
      }
     },
     "auth_ref": [
      "r454"
     ]
    },
    "ifrs-full_GrossProfit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "GrossProfit",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross profit",
        "totalLabel": "Gross profit from sales of goods and services"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of revenue less cost of sales. [Refer: Cost of sales; Revenue]"
       }
      }
     },
     "auth_ref": [
      "r387"
     ]
    },
    "aval_GrowthInResidualValuesAfterFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrowthInResidualValuesAfterFiveYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Growth in residual values after five years [member]",
        "label": "Growth in residual values after five years [member]",
        "terseLabel": "Growth in residual values after five years"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GrowthRateInExpenses": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrowthRateInExpenses",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Growth rate in expenses",
        "label": "Growth rate in expenses",
        "terseLabel": "Growth in expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GrowthRateInIncomeFromCommissions": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrowthRateInIncomeFromCommissions",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The growth rate in income from commissions.",
        "label": "Growth rate in income from commissions",
        "terseLabel": "Growth in income from commissions"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GrowthRateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrowthRateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Growth rate"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GrupoAvalLimitedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrupoAvalLimitedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Grupo Aval Limited"
       }
      }
     },
     "auth_ref": []
    },
    "aval_GrupoEnergiaBogotaSaEspMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GrupoEnergiaBogotaSaEspMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Grupo Energia Bogota S.A. E.S.P. [member]",
        "label": "Grupo Energia Bogota SA ESP [member]",
        "terseLabel": "Grupo Energia Bogota S.A. E.S.P."
       }
      }
     },
     "auth_ref": []
    },
    "aval_GuaranteedWithInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "GuaranteedWithInvestments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of guaranteed with investments.",
        "label": "Guaranteed with Investments"
       }
      }
     },
     "auth_ref": []
    },
    "country_HN": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "HN",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "HONDURAS"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_HedgedItemLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "HedgedItemLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedged item, liabilities",
        "negatedLabel": "Amount of hedge by financial liabilities in foreign currency"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a hedged item, recognised as a liability. [Refer: Hedged items [domain]]"
       }
      }
     },
     "auth_ref": [
      "r316"
     ]
    },
    "ifrs-full_HedgesOfNetInvestmentInForeignOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "HedgesOfNetInvestmentInForeignOperationsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedges of net investment in foreign operations [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedges of the entity's monetary items that are receivable from or payable to a foreign operation, for which settlement is neither planned nor likely to occur in the foreseeable future. A foreign operation is an entity that is a subsidiary, associate, joint venture or branch of a reporting entity, the activities of which are based or conducted in a country or currency other than those of the reporting entity."
       }
      }
     },
     "auth_ref": [
      "r178",
      "r315",
      "r317",
      "r320"
     ]
    },
    "ifrs-full_HedgesOfNetInvestmentsInForeignOperationsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "HedgesOfNetInvestmentsInForeignOperationsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedges of net investment in foreign operations [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_HedgingInstrumentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "HedgingInstrumentAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instrument, assets",
        "terseLabel": "Assets",
        "verboseLabel": "Hedging derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a hedging instrument, recognised as an asset. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r312"
     ]
    },
    "ifrs-full_HedgingInstrumentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "HedgingInstrumentLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instrument, liabilities",
        "negatedLabel": "Hedging derivatives, liabilities",
        "positiveLabel": "Liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a hedging instrument, recognised as a liability. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r312"
     ]
    },
    "ifrs-full_HedgingInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "HedgingInstrumentsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r309",
      "r315"
     ]
    },
    "ifrs-full_HedgingInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "HedgingInstrumentsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedging instruments. A hedging instrument can be a designated: (a) derivative measured at fair value through profit or loss, except for some written options (see paragraph B6.2.4 of IFRS 9); (b) non-derivative financial asset or non-derivative financial liability measured at fair value through profit or loss, unless it is a financial liability designated as at fair value through profit or loss for which the amount of its change in fair value that is attributable to changes in the credit risk of that liability is presented in other comprehensive income in accordance with paragraph 5.7.7 of IFRS 9. For a hedge of foreign currency risk, the foreign currency risk component of a non-derivative financial asset or a non-derivative financial liability may be designated as a hedging instrument provided that it is not an investment in an equity instrument for which an entity has elected to present changes in fair value in other comprehensive income in accordance with paragraph 5.7.5 of IFRS 9. This member also represents the standard value for the 'Hedging instruments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r309",
      "r315"
     ]
    },
    "aval_HedgingInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "HedgingInstrumentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Hedging instruments [member]",
        "label": "Hedging instruments [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_HoldingBursatilRegionalSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "HoldingBursatilRegionalSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Holding Bursatil Regional S.A. [member]",
        "label": "Holding Bursatil Regional SA [member]",
        "terseLabel": "Holding Bursatil Regional S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_HoldingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "HoldingMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Holding [member]",
        "label": "Holding [member]",
        "terseLabel": "Holding"
       }
      }
     },
     "auth_ref": []
    },
    "srt_HotelMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "HotelMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hotel [Member]",
        "terseLabel": "Hotels"
       }
      }
     },
     "auth_ref": []
    },
    "aval_HotelesEstelarSAMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "HotelesEstelarSAMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hoteles Estelar S. A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_HousingLeasingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "HousingLeasingMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Housing leasing [Member]",
        "terseLabel": "Housing leasing"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IbrRateThreeMMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IbrRateThreeMMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for IBR rate 3M.",
        "label": "IBR Rate Three M [Member]",
        "terseLabel": "IBR rate 3M"
       }
      }
     },
     "auth_ref": []
    },
    "dei_IcfrAuditorAttestationFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "IcfrAuditorAttestationFlag",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "ICFR Auditor Attestation Flag"
       }
      }
     },
     "auth_ref": [
      "r478",
      "r479",
      "r502"
     ]
    },
    "aval_IfrsAccountsPayableMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsAccountsPayableMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "IFRS Accounts Payable [Member]",
        "label": "IFRS Accounts Payable [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsCashAndCashEquivalentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsCashAndCashEquivalentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "IFRS Cash and Cash Equivalents [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsConstructionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsConstructionMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Building or developing real estate. Includes, but is not limited to, improvement to land for drainage, utilities, grading and subdividing.",
        "label": "IFRS Construction [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsCorporateDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsCorporateDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt securities issued by domestic or foreign corporate business, banks and other entities with a promise of repayment.",
        "label": "Corporate"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsDeconsolidationGainLossAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsDeconsolidationGainLossAmount",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer.",
        "label": "Ifrs Deconsolidation, Gain (Loss), Amount",
        "negatedLabel": "Deconsolidation of entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsDiscontinuedOperationsDisposedOfByMeansOtherThanSaleSpinoffMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Component or group of components disposed of in a spinoff and representing a strategic shift that has or will have a major effect on operations and financial results.",
        "label": "Ifrs Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsDiscontinuedOperationsDisposedOfBySaleMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsDiscontinuedOperationsDisposedOfBySaleMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Component or group of components disposed of by sale and representing a strategic shift that has or will have a major effect on operations and financial results.",
        "label": "Ifrs Discontinued Operations, Disposed of by Sale [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsDisposalGroupClassificationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsDisposalGroupClassificationAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by disposal group classification.",
        "label": "Ifrs Disposal Group Classification [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsDisposalGroupClassificationDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsDisposalGroupClassificationDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Component or group of components disposed of, including but not limited to, disposal group held-for-sale or disposed of by sale, disposed of by means other than sale, and discontinued operations.",
        "label": "Ifrs Disposal Group Classification [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsDisposalGroupIncludingDiscontinuedOperationConsideration": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsDisposalGroupIncludingDiscontinuedOperationConsideration",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ifrs Disposal Group Including Discontinued Operation Consideration",
        "label": "Ifrs Disposal Group, Including Discontinued Operation, Consideration",
        "terseLabel": "Consideration received"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsEquitySecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsEquitySecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ownership interest or right to acquire or dispose of ownership interest in corporations and other legal entities for which ownership interest is represented by shares of common or preferred stock, convertible securities, stock rights, or stock warrants.",
        "label": "Equity securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsGovernmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsGovernmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Organization that is the governing authority of a community.",
        "label": "Government"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsLoanToValueAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsLoanToValueAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by loan-to-value (LTV) ratio, for example, but not limited to, 80% to 100%. Element name and standard label in LTV [numeric lower end] to [numeric higher end] Percent [Member] or LTV Greater Than [low end numeric value] Percent [Member] or LTV Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Ifrs Loan to Value [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsLoanToValueDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsLoanToValueDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan-to-value (LTV) ratio, for example, but not limited to, 80% to 100%. Element name and standard label in LTV [numeric lower end] to [numeric higher end] Percent [Member] or LTV Greater Than [low end numeric value] Percent [Member] or LTV Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Ifrs Loan to Value [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsLoansAndLeasesReceivableRelatedParties": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsLoansAndLeasesReceivableRelatedParties",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.",
        "label": "IFRS Loans and Leases Receivable, Related Parties",
        "terseLabel": "Loans receivable, related party"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsLongTermDebtMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsLongTermDebtMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt arrangement having an initial term longer than one year or beyond the normal operating cycle, if longer.",
        "label": "IFRS Long-term Debt [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsNumberOfOperatingSegments": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsNumberOfOperatingSegments",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.",
        "label": "Ifrs Number of operating segments",
        "terseLabel": "Number of operating segments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsOtherDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsOtherDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "IFRS other debt securities [member]",
        "label": "Other debt securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsRealEstateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsRealEstateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Property consisting of land, land improvement and buildings.",
        "label": "IFRS Real Estate [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsRepurchaseAgreementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsRepurchaseAgreementsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investments represented by an agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Such agreements are generally short-term in nature.",
        "label": "IFRS Repurchase Agreements [Member]",
        "terseLabel": "Repurchase agreements"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsResidentialRealEstateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsResidentialRealEstateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Property that is used as a home.",
        "label": "IFRS Residential Real Estate [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsSharePrice": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsSharePrice",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ifrs Share Price",
        "label": "Ifrs Share Price",
        "terseLabel": "Share price (in dollar per share)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsSovereignDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsSovereignDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt security issued by foreign government (not within the country of domicile of the entity).",
        "label": "Sovereign"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IfrsStockholdersEquityNoteSpinoffTransaction": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IfrsStockholdersEquityNoteSpinoffTransaction",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ifrs stockholders' equity note, spinoff transaction",
        "label": "Ifrs stockholders' equity note, spinoff transaction",
        "terseLabel": "Spin Off"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ImpactOfMeasurementOfExpectedCreditLossesDueToChangesMade": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ImpactOfMeasurementOfExpectedCreditLossesDueToChangesMade",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of impact of measurement of ECL due to changes made in PDs/LGDs/EADs and changes made to model assumptions and methodologies.",
        "label": "Impact Of Measurement Of Expected Credit Losses Due To Changes Made",
        "terseLabel": "Impact of the measurement of ECL"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ImpairedCollateralizedLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ImpairedCollateralizedLoans",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of obligation towards Impaired collateralized loans.",
        "label": "Impaired collateralized loans"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ImpairmentAllowanceOfOtherAccountsReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ImpairmentAllowanceOfOtherAccountsReceivables",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesNet",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of impairment allowance of other accounts receivables.",
        "label": "Impairment Allowance Of Other Accounts Receivables",
        "negatedLabel": "Loss allowance"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ImpairmentLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ImpairmentLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "aval_InterestIncomeAfterImpairmentLosses",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss",
        "negatedLabel": "Impairment expense",
        "negatedTotalLabel": "Net impairment loss on financial assets",
        "terseLabel": "Impairment loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]]"
       }
      }
     },
     "auth_ref": [
      "r139",
      "r140"
     ]
    },
    "aval_ImpairmentLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ImpairmentLossAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Loss [Abstract]",
        "terseLabel": "Impairment losses on financial assets",
        "verboseLabel": "Impairment (losses) recoveries on financial assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ImpairmentLossOnLoanAndOtherAccountsReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ImpairmentLossOnLoanAndOtherAccountsReceivable",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ImpairmentLoss",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount.",
        "label": "Impairment loss on loan and other accounts receivable",
        "negatedLabel": "Loans and other accounts receivable"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ImpairmentLossRecognisedInProfitOrLossGoodwill",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillRollForwardTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss recognised in profit or loss, goodwill",
        "negatedLabel": "Impairment charge",
        "terseLabel": "Impairment"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r288"
     ]
    },
    "ifrs-full_ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss recognised in profit or loss, intangible assets other than goodwill",
        "negatedLabel": "Impairment charge",
        "terseLabel": "Impairment loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r167"
     ]
    },
    "ifrs-full_ImpairmentLossRecognisedInProfitOrLossLoansAndAdvances": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ImpairmentLossRecognisedInProfitOrLossLoansAndAdvances",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss recognised in profit or loss, loans and advances",
        "negatedTerseLabel": "Net impairment loss on financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of impairment loss recognised in profit or loss for loans and advances. [Refer: Impairment loss recognised in profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipmentIncludingRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipmentIncludingRightofuseAssets",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss recognised in profit or loss, property, plant and equipment including right-of-use assets",
        "negatedLabel": "Year impairment charge"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of impairment loss recognised in profit or loss for property, plant and equipment including right-of-use assets. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment including right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossLoansAndAdvances": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossLoansAndAdvances",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss (reversal of impairment loss) recognised in profit or loss, loans and advances",
        "terseLabel": "Loss allowance - costs and expenses of sales goods and services"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of impairment loss or reversal of impairment loss recognised in profit or loss for loans and advances. [Refer: Impairment loss recognised in profit or loss; Reversal of impairment loss recognised in profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "aval_ImpairmentLossesOnOtherAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ImpairmentLossesOnOtherAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to the impairment losses on other assets.",
        "label": "Impairment Losses On Other Assets",
        "negatedLabel": "Impairment losses other assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ImpairmentRecoveryOnOtherFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ImpairmentRecoveryOnOtherFinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ImpairmentLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Impairment (recovery) on other financial assets",
        "label": "Impairment (recovery) on other financial assets",
        "negatedLabel": "Other financial assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeApproachMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeApproachMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income approach [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for valuation techniques that convert future amounts (for example, cash flows or income and expenses) to a single current (ie discounted) amount. The fair value measurement is determined on the basis of the value indicated by current market expectations about those future amounts."
       }
      }
     },
     "auth_ref": [
      "r143",
      "r152",
      "r243",
      "r421"
     ]
    },
    "ifrs-full_IncomeFromContinuingOperationsAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeFromContinuingOperationsAttributableToOwnersOfParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfIncomeCalc2": {
       "parentTag": "ifrs-full_ProfitLossAttributableToOwnersOfParent",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income from continuing operations attributable to owners of parent",
        "terseLabel": "Net income attributable to owners of the parent - Net income for the period from continuing operations",
        "verboseLabel": "Net income attributable to owners of the parent"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income from continuing operations attributable to owners of the parent. [Refer: Continuing operations, unless line item indicates otherwise [member]]"
       }
      }
     },
     "auth_ref": [
      "r297"
     ]
    },
    "aval_IncomeFromContractWithCustomersAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeFromContractWithCustomersAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Income from contract with customers [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeFromDiscontinuedOperationsAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeFromDiscontinuedOperationsAttributableToOwnersOfParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfIncomeCalc2": {
       "parentTag": "ifrs-full_ProfitLossAttributableToOwnersOfParent",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails": {
       "parentTag": "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income from discontinued operations attributable to owners of parent",
        "netLabel": "Net income attributable to owners of the parent",
        "terseLabel": "Net income attributable to owners of the parent - Net income for the period from discontinued operations, net of tax",
        "verboseLabel": "Owners of the parent"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income from discontinued operations attributable to owners of the parent. [Refer: Discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r297"
     ]
    },
    "aval_IncomeFromFinancialInstrumentsDesignatedAtFairValueNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeFromFinancialInstrumentsDesignatedAtFairValueNet",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of net income from financial instruments designated at fair value.",
        "label": "Income From Financial Instruments Designated At Fair Value Net",
        "verboseLabel": "Net income from other financial instruments mandatorily at fair value through profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeFromGoodsAndServicesFromNonFinancialSector": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeFromGoodsAndServicesFromNonFinancialSector",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of income from goods and services from non-financial sector.",
        "label": "Income From Goods And Services From Non-Financial Sector",
        "terseLabel": "Income from goods and services from non-financial sector"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeInUsDollarsForecasted": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeInUsDollarsForecasted",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of income in U.S. dollars forecasted.",
        "label": "Income in US dollars forecasted",
        "terseLabel": "Income in Thousands of U.S. dollar forecasted"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeReceivedForThirdParties": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeReceivedForThirdParties",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of income received for third parties.",
        "label": "Income Received For Third Parties",
        "terseLabel": "Income received for third parties"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeStatementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeStatementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit or loss [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeSurtax": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeSurtax",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The additional tax over the income tax.",
        "label": "Income Surtax",
        "terseLabel": "Income surtax"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeTaxAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxAssetsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax assets [Abstract]",
        "verboseLabel": "Income tax assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeTaxAssetsNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxAssetsNet",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The total income tax assets.",
        "label": "Income tax assets, net",
        "terseLabel": "Income tax assets",
        "totalLabel": "Total Income tax assets, net"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxExpenseContinuingOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxExpenseContinuingOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperations",
       "weight": -1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax expense (income)",
        "negatedLabel": "Income tax",
        "totalLabel": "Total income tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]"
       }
      }
     },
     "auth_ref": [
      "r52",
      "r67",
      "r69",
      "r70",
      "r123",
      "r233",
      "r363"
     ]
    },
    "aval_IncomeTaxLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxLiabilitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax liabilities [Abstract]",
        "verboseLabel": "Income tax liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeTaxLiabilitiesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxLiabilitiesNet",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The total income tax liabilities.",
        "label": "Income tax liabilities, net",
        "terseLabel": "Income tax liabilities",
        "totalLabel": "Total Income tax liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeTaxRelatingHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsIncludedInOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxRelatingHedgesOfNetInvestmentsInForeignOperationsDerivativeInstrumentsIncludedInOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income tax relating hedges of net investments in foreign operations, derivative instruments, included in other comprehensive income",
        "label": "Income tax relating hedges of net investments in foreign operations, derivative instruments, included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Hedging derivatives in foreign currency"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to cash flow hedges included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Cash flow hedges, deferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r68"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income",
        "negatedLabel": "Credited (charged) to OCI",
        "negatedTerseLabel": "Tax (expense) income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r68"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": -1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income that will be reclassified to profit or loss",
        "negatedLabel": "Total income tax relating to components of other comprehensive income that will be reclassified to profit or loss",
        "negatedTerseLabel": "Income tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income that will be reclassified to profit or loss. [Refer: Income tax relating to components of other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r58"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
       "weight": -1.0,
       "order": 4.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss",
        "negatedTerseLabel": "Income tax",
        "negatedTotalLabel": "Total tax (expense) income, deferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income that will not be reclassified to profit or loss. [Refer: Income tax relating to components of other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r58"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeTaxRelatingToEffectOfMovingInvestmentPropertiesForOwnUseIncludedInOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxRelatingToEffectOfMovingInvestmentPropertiesForOwnUseIncludedInOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income tax relating to effect of moving investment properties for own use included in other comprehensive income",
        "label": "Income tax relating to effect of moving investment properties for own use included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Transfer from owner-occupied property to investment property, deferred"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeTaxRelatingToExchangeDifferencesOnTranslationOfForeignOperationsHedgedIncludedInOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxRelatingToExchangeDifferencesOnTranslationOfForeignOperationsHedgedIncludedInOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income tax relating to exchange differences on translation of foreign operations, hedged, included in other comprehensive income",
        "label": "Income tax relating to exchange differences on translation of foreign operations, hedged, included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Hedging of net investments in foreign subsidiaries operations, deferred"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncomeTaxRelatingToExchangeDifferencesOnTranslationOfForeignOperationsUnhedgedIncludedInOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxRelatingToExchangeDifferencesOnTranslationOfForeignOperationsUnhedgedIncludedInOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income tax relating to exchange differences on translation of foreign operations, unhedged, included in other comprehensive income",
        "label": "Income tax relating to exchange differences on translation of foreign operations, unhedged, included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Foreign currency translation differences for foreign operations, deferred"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to financial assets measured at fair value through other comprehensive income included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Debt financial instruments, deferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r68"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToInvestmentsInEquityInstrumentsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToInvestmentsInEquityInstrumentsOfOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to investments in equity instruments included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Unrealized gains (losses) on equity financial securities, deferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to investments in equity instruments that the entity has designated at fair value through other comprehensive income applying paragraph 5.7.5 of IFRS 9. [Refer: Other comprehensive income; Reserve of gains and losses from investments in equity instruments]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r68"
     ]
    },
    "aval_IncomeTaxRelatingToOciMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxRelatingToOciMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to OCI"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to remeasurements of defined benefit plans included in other comprehensive income",
        "negatedLabel": "Tax (expense) income - Actuarial gains (losses) from defined benefit pension plans, deferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to remeasurements of defined benefit plans. [Refer: Other comprehensive income; Reserve of remeasurements of defined benefit plans; Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r68"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss",
        "negatedLabel": "Tax (expense) income - Investment in associates and joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to an entity's share of other comprehensive income of associates and joint ventures accounted for using the equity method that will be reclassified to profit or loss. [Refer: Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax]"
       }
      }
     },
     "auth_ref": [
      "r58"
     ]
    },
    "aval_IncomeTaxSurcharge": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncomeTaxSurcharge",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails": {
       "parentTag": "ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxComponentsOfIncomeTaxExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The element represents the amount of income tax surcharge.",
        "label": "Income Tax Surcharge",
        "verboseLabel": "Income tax surcharge"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncomeTaxesPaidRefundClassifiedAsOperatingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 24.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income taxes paid (refund), classified as operating activities",
        "negatedLabel": "Income tax paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from income taxes paid or refunded, classified as operating activities. [Refer: Income taxes paid (refund)]"
       }
      }
     },
     "auth_ref": [
      "r195",
      "r412"
     ]
    },
    "aval_IncreaseDecreaseDueToChangesInLeaseVariablesPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseDueToChangesInLeaseVariablesPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of Increase / (decrease) due to changes in the lease variables.",
        "label": "Increase (Decrease) Due To Changes In The Lease Variables Property Plant And Equipment",
        "terseLabel": "Increase / (decrease) due to changes in the lease variables"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseInBenefitsInTaxRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseInBenefitsInTaxRates",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "It represents increase decrease in benefits in tax rates.",
        "label": "Increase Decrease In Benefits In Tax Rates",
        "negatedLabel": "Effect on the deferred income tax due to changes in tax rates"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInCashAndCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in cash and cash equivalents after effect of exchange rate changes",
        "totalLabel": "(Decrease) increase in cash and cash equivalents",
        "verboseLabel": "(Decrease) increase in cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in cash and cash equivalents after the effect of exchange rate changes on cash and cash equivalents held in foreign currencies. [Refer: Cash and cash equivalents; Effect of exchange rate changes on cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r199"
     ]
    },
    "ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in cash and cash equivalents, discontinued operations",
        "terseLabel": "Decrease in cash and cash equivalents from discontinued operations",
        "verboseLabel": "Decrease in cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in cash and cash equivalents from discontinued operations. [Refer: Cash and cash equivalents; Discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r626"
     ]
    },
    "ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption",
        "terseLabel": "Decrease"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r100"
     ]
    },
    "ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption",
        "terseLabel": "Increase"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r100"
     ]
    },
    "aval_IncreaseDecreaseInDiscountRateAppliedToCashFlowProjections": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseInDiscountRateAppliedToCashFlowProjections",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) in discount rate applied to cash flow projections for a cash-generating unit (group of units).",
        "label": "Increase Decrease In Discount Rate Applied To Cash Flow Projections",
        "terseLabel": "Increase decrease in discount rate applied to cash flow projections"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, assets",
        "terseLabel": "Sensitivity impacts, Scenario 2"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of increase (decrease) in the fair value measurement of assets due to a reasonably possible decrease in an unobservable input."
       }
      }
     },
     "auth_ref": [
      "r249"
     ]
    },
    "ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets",
        "terseLabel": "Sensitivity impacts, Scenario 1"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of increase (decrease) in the fair value measurement of assets due to a reasonably possible increase in an unobservable input."
       }
      }
     },
     "auth_ref": [
      "r249"
     ]
    },
    "aval_IncreaseDecreaseInFairValueOfAssetsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseInFairValueOfAssetsHeldForSale",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase decrease in fair value of assets held for sale.",
        "label": "Increase decrease in fair value of assets held for sale",
        "verboseLabel": "Increase / decrease by changes in fair value"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseInNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryShockScenarios": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseInNetInterestMarginAndEconomicValueOfEquityUnderRegulatoryShockScenarios",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the amount of increase (decrease) in Net Interest Margin and Economic Value of Equity under different regulatory shock scenarios.",
        "label": "Increase (Decrease) In Net Interest Margin And Economic Value Of Equity Under Regulatory Shock Scenarios",
        "terseLabel": "Increase (decrease) in NIM and EVE"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInNetInvestmentInFinanceLease": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInNetInvestmentInFinanceLease",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in net investment in finance lease",
        "terseLabel": "Loss allowance of net investment in financial leasing"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the net investment in finance lease. [Refer: Net investment in finance lease]"
       }
      }
     },
     "auth_ref": [
      "r270"
     ]
    },
    "aval_IncreaseDecreaseInOtherReceivablesAssociatedWithLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseInOtherReceivablesAssociatedWithLoans",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase (decrease) in other receivables associated with loans.",
        "label": "Increase (Decrease) in Other Receivables Associated with Loans",
        "terseLabel": "Net remeasurement of amortized cost and other receivables"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInWorkingCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInWorkingCapital",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in working capital",
        "terseLabel": "Changes in operating assets and liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in working capital."
       }
      }
     },
     "auth_ref": [
      "r622"
     ]
    },
    "aval_IncreaseDecreaseOfNonCurrentAssetsHeldForSaleDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseOfNonCurrentAssetsHeldForSaleDiscontinuedOperations",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) of non current assets held for sale discontinued operations",
        "label": "Increase (decrease) of non current assets held for sale, discontinued operations",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseRemeasurementOfLossAllowanceNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseRemeasurementOfLossAllowanceNet",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) in remeasurement of loss allowance, net.",
        "label": "Increase (Decrease) Remeasurement Of Loss Allowance Net",
        "negatedLabel": "Net remeasurement of loss allowance"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in net defined benefit liability (asset) resulting from changes in foreign exchange rates, net defined benefit liability (asset)",
        "terseLabel": "Effect of movements in exchange rates"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the net defined benefit liability (asset) resulting from changes in foreign exchange rates. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r97"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity",
        "terseLabel": "Equity transactions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity through changes in ownership interests in subsidiaries that do not result in loss of control. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r4"
     ]
    },
    "aval_IncreaseDecreaseThroughDeconsolidationOfEntitiesEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughDeconsolidationOfEntitiesEquity",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (Decrease) Through Deconsolidation of Entities, equity.",
        "label": "Increase (Decrease) Through Deconsolidation of Entities, equity",
        "terseLabel": "Deconsolidation of entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughDiscontinuedOperations",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) through discontinued operations",
        "label": "Increase (decrease) through discontinued operations",
        "negatedLabel": "Discontinued operations",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through effect of changes in foreign exchange rates, liabilities arising from financing activities",
        "terseLabel": "Effects of changes in foreign exchange rates"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in foreign exchange rates. [Refer: Liabilities arising from financing activities]"
       }
      }
     },
     "auth_ref": [
      "r197"
     ]
    },
    "aval_IncreaseDecreaseThroughEntityLiquidation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughEntityLiquidation",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) through entity liquidation",
        "label": "Increase (decrease) through entity liquidation",
        "negatedLabel": "Entity liquidation"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughForeignExchangeAndOtherMovementsFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughForeignExchangeAndOtherMovementsFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through foreign exchange and other movements, financial assets",
        "negatedLabel": "FX and other movements",
        "terseLabel": "FX and other movements"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in financial assets resulting from foreign exchange and other movements. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r441",
      "r462"
     ]
    },
    "aval_IncreaseDecreaseThroughForeignExchangeAssetsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughForeignExchangeAssetsHeldForSale",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) through foreign exchange, assets held-for-sale",
        "label": "Increase (decrease) through foreign exchange, assets held-for-sale",
        "terseLabel": "Effect of movements in exchange rates"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughForeignExchangeFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughForeignExchangeFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through foreign exchange, financial assets",
        "terseLabel": "Effect of movements in exchange rates",
        "verboseLabel": "Exchange gains (losses) in foreign currency"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in financial assets resulting from foreign exchange. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r441",
      "r462"
     ]
    },
    "aval_IncreaseDecreaseThroughGainOrLossOnPortfolioSaleFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughGainOrLossOnPortfolioSaleFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) through gain or loss on portfolio sale, financial assets.",
        "label": "Increase (Decrease) Through Gain or Loss on Portfolio Sale, Financial Assets",
        "terseLabel": "Gain or loss on sale portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughLossOfControlInSubsidiary": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughLossOfControlInSubsidiary",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) through loss of control in subsidiary",
        "label": "Increase (decrease) through loss of control in subsidiary",
        "negatedLabel": "Loss of control in subsidiary",
        "terseLabel": "Loss of control in subsidiary"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughLossOfControlOfSubsidiaryDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughLossOfControlOfSubsidiaryDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through loss of control of subsidiary, deferred tax liability (asset)",
        "negatedLabel": "Loss of control in a subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in deferred tax liability (asset) resulting from the loss of control of a subsidiary. [Refer: Deferred tax liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r600"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, deferred tax liability (asset)",
        "negatedLabel": "Foreign exchange adjustments"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r600"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillRollForwardAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillRollForwardTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, goodwill",
        "verboseLabel": "Effect of movements in exchange rates"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r289"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, intangible assets other than goodwill",
        "terseLabel": "Effect of movements in exchange rates",
        "verboseLabel": "Effect of movements in exchange rates"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in intangible assets other than goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r169"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, other provisions",
        "verboseLabel": "Effect of movements in exchange rates"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r611"
     ]
    },
    "aval_IncreaseDecreaseThroughNetExchangeDifferencesTangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesTangibleAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) in tangible assets resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity.",
        "label": "Increase (decrease) through net exchange differences, tangible assets",
        "terseLabel": "Effect of movement in exchange rates"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through other changes, intangible assets other than goodwill",
        "verboseLabel": "Reclassification to / from PPE"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in intangible assets other than goodwill resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r170"
     ]
    },
    "aval_IncreaseDecreaseThroughOtherProvisionsDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughOtherProvisionsDiscontinuedOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (Decrease) Through , Other Provisions, Discontinued Operations",
        "label": "Increase (Decrease) Through , Other Provisions, Discontinued Operations",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughReclassificationBySpinOffAndDeConsolidationIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughReclassificationBySpinOffAndDeConsolidationIntangibleAssetsOtherThanGoodwill",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) through reclassification by spin off and de-consolidation intangible assets other than goodwill",
        "label": "Increase (decrease) through reclassification by spin off and de-consolidation intangible assets other than goodwill",
        "terseLabel": "Reclassification BAC"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughReclassificationsAssetsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughReclassificationsAssetsHeldForSale",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) through reclassifications, assets held-for-sale",
        "label": "Increase (decrease) through reclassifications, assets held-for-sale",
        "terseLabel": "Reclassifications"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughTransferFromStage1ToStage2": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughTransferFromStage1ToStage2",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase (decrease) through transfers of financial assets from stage 1 to stage 2.",
        "label": "Increase (Decrease) through Transfer From Stage 1 to Stage 2",
        "negatedLabel": "Transfer from stage 1 to stage 2",
        "terseLabel": "Transfer from stage 1 to stage 2"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughTransferFromStage1ToStage3": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughTransferFromStage1ToStage3",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase (decrease) through transfers of financial assets from stage 1 to stage 3.",
        "label": "Increase (Decrease) through Transfer From Stage 1 to Stage 3",
        "negatedLabel": "Transfer from stage 1 to stage 3",
        "terseLabel": "Transfer from stage 1 to stage 3"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughTransferFromStage2ToStage1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughTransferFromStage2ToStage1",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase (decrease) through transfers of financial assets from stage 2 to stage 1.",
        "label": "Increase (Decrease) through Transfer From Stage 2 to Stage 1",
        "negatedLabel": "Transfer from stage 2 to stage 1",
        "terseLabel": "Transfer from stage 2 to stage 1"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughTransferFromStage2ToStage3": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughTransferFromStage2ToStage3",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase (decrease) through transfers of financial assets from stage 2 to stage 3.",
        "label": "Increase (Decrease) through Transfer From Stage 2 to Stage 3",
        "negatedLabel": "Transfer from stage 2 to stage 3",
        "terseLabel": "Transfer from stage 2 to stage 3"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughTransferFromStage3ToStage1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughTransferFromStage3ToStage1",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase (decrease) through transfers of financial assets from stage 3 to stage 1.",
        "label": "Increase (Decrease) through Transfer From Stage 3 to Stage 1",
        "negatedLabel": "Transfer from stage 3 to stage 1",
        "terseLabel": "Transfer from stage 3 to stage 1"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseDecreaseThroughTransferFromStage3ToStage2": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughTransferFromStage3ToStage2",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of increase (decrease) through transfers of financial assets from stage 3 to stage 2.",
        "label": "Increase (Decrease) through Transfer From Stage 3 to Stage 2",
        "negatedLabel": "Transfer from stage 3 to stage 2",
        "terseLabel": "Transfer from stage 3 to stage 2"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughTransfersIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughTransfersIntangibleAssetsOtherThanGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through transfers, intangible assets other than goodwill",
        "terseLabel": "Transfers"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in intangible assets other than goodwill resulting from transfers. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughTransfersPropertyPlantAndEquipmentIncludingRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughTransfersPropertyPlantAndEquipmentIncludingRightofuseAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through transfers, property, plant and equipment including right-of-use assets",
        "terseLabel": "Transfers to/from non-current assets held for sale"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in property, plant and equipment including right-of-use assets resulting from transfers. [Refer: Property, plant and equipment including right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "aval_IncreaseDecreaseThroughUnwindingOfDiscount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseDecreaseThroughUnwindingOfDiscount",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) due to unwinding of discount.",
        "label": "Increase (Decrease) Through Unwinding Of Discount",
        "negatedLabel": "Unwind of discount"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseInEquityDueToChangeInValueOfUsd": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseInEquityDueToChangeInValueOfUsd",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskSensitivityAnalysisOfForeignExchangeEffectDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase in equity, 100 Colombian pesos per United States dollar.",
        "label": "Increase in equity due to change in value of USD",
        "terseLabel": "Equity, increase Ps.100 per U.S. dollar"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseInProfitBeforeTaxDueToChangeInValueOfUsd": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseInProfitBeforeTaxDueToChangeInValueOfUsd",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskSensitivityAnalysisOfForeignExchangeEffectDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase in foreign exchange effect on profit before taxes, 100 Colombian pesos per United States dollar.",
        "label": "Increase in Profit Before Tax Due to Change in Value of Usd",
        "verboseLabel": "Profit and loss before taxes, increase Ps.100 per U.S. dollar"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IncreaseThroughAdditionsAssetsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseThroughAdditionsAssetsHeldForSale",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase through additions, assets held-for-sale",
        "label": "Increase through additions, assets held-for-sale",
        "terseLabel": "Additions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseThroughOriginationOrPurchaseFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IncreaseThroughOriginationOrPurchaseFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase through origination or purchase, financial assets",
        "negatedLabel": "New financial assets originated or purchased / Provision charged to profit or loss",
        "terseLabel": "New financial assets originated or purchased",
        "verboseLabel": "Additions or new concession arrangements"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in financial assets resulting from origination or purchase. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r441",
      "r442",
      "r462"
     ]
    },
    "aval_IncreaseThroughProvisionChargedToProfitOrLossFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IncreaseThroughProvisionChargedToProfitOrLossFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase through provision charged to profit or loss, financial assets.",
        "label": "Increase Through Provision Charged to Profit or Loss, Financial Assets",
        "terseLabel": "Provision charged to profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IndexFuturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IndexFuturesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for index futures.",
        "label": "Index futures"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash-generating units [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r153"
     ]
    },
    "ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash-generating units [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Cash-generating units' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r153",
      "r155"
     ]
    },
    "ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total for all cash-generating units [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the smallest identifiable group of assets that generates cash inflows that are largely independent of the cash inflows from other assets or groups of assets."
       }
      }
     },
     "auth_ref": [
      "r153"
     ]
    },
    "ecd_IndividualAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "IndividualAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure",
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure",
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements",
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Individual [Axis]",
        "terseLabel": "Individual:"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r544",
      "r553",
      "r557",
      "r565"
     ]
    },
    "aval_IndividualValueOfTaxValueUnit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IndividualValueOfTaxValueUnit",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The individual value of Tax Value Unit.",
        "label": "Individual value of Tax Value Unit",
        "terseLabel": "Individual value of Tax Value Unit"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IndividualsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IndividualsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Individuals [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_IndividualsWithControlOverEntityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "IndividualsWithControlOverEntityMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for individuals with control over entity.",
        "label": "Individuals with Control Over Entity [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InflationRatePercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InflationRatePercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Inflation rate, percentage",
        "label": "Inflation rate, percentage",
        "terseLabel": "Inflation"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InflationRatePercentageOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InflationRatePercentageOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Inflation rate, percentage, one-year projection",
        "label": "Inflation rate, percentage, one-year projection",
        "terseLabel": "Inflation, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InflationRateUsedInImpairmentTestsOfCashGeneratingUnits": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InflationRateUsedInImpairmentTestsOfCashGeneratingUnits",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The inflation rate used in impairment tests of cash generating units.",
        "label": "Inflation rate used in impairment tests of cash generating units",
        "terseLabel": "Inflation"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InformationProcessingServicesOfOperatorsExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InformationProcessingServicesOfOperatorsExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionExpense",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information processing services of operators expenses",
        "label": "Information processing services of operators expenses",
        "negatedLabel": "Information processing services of operators"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InfrastructureConcessionArrangementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InfrastructureConcessionArrangementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Infrastructure concession arrangement [member]",
        "label": "Infrastructure concession arrangement [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InfrastructureMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InfrastructureMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Infrastructure [member]",
        "label": "Infrastructure [member]",
        "terseLabel": "Infrastructure"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InsideBancoDeBogotaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InsideBancoDeBogotaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Banco de Bogota S.A. over Megabanco"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_InsiderTradingArrLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "InsiderTradingArrLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Arrangements [Line Items]",
        "terseLabel": "Insider Trading Arrangements:"
       }
      }
     },
     "auth_ref": [
      "r563"
     ]
    },
    "ecd_InsiderTradingPoliciesProcLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "InsiderTradingPoliciesProcLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures [Line Items]",
        "terseLabel": "Insider Trading Policies and Procedures:"
       }
      }
     },
     "auth_ref": [
      "r480",
      "r569"
     ]
    },
    "ecd_InsiderTrdPoliciesProcAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "InsiderTrdPoliciesProcAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures Adopted [Flag]",
        "terseLabel": "Insider Trading Policies and Procedures Adopted"
       }
      }
     },
     "auth_ref": [
      "r480",
      "r569"
     ]
    },
    "ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "InsiderTrdPoliciesProcNotAdoptedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures Not Adopted [Text Block]",
        "terseLabel": "Insider Trading Policies and Procedures Not Adopted"
       }
      }
     },
     "auth_ref": [
      "r480",
      "r569"
     ]
    },
    "ifrs-full_InsuranceExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InsuranceExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance expense",
        "negatedLabel": "Insurance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense arising from purchased insurance."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_InsuranceMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InsuranceMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InsurancePayable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InsurancePayable",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Insurance payable",
        "label": "Insurance payable",
        "terseLabel": "Insurance payables"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IntangibleAssetsAndGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IntangibleAssetsAndGoodwill",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible assets and goodwill",
        "totalLabel": "Total Intangibles",
        "verboseLabel": "Intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_IntangibleAssetsAndGoodwillAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IntangibleAssetsAndGoodwillAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible assets and goodwill [abstract]",
        "terseLabel": "Intangibles"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IntangibleAssetsOtherThanGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible assets other than goodwill",
        "periodEndLabel": "Ending Balance",
        "periodStartLabel": "Beginning Balance",
        "terseLabel": "Intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r15",
      "r171"
     ]
    },
    "ifrs-full_IntangibleAssetsOtherThanGoodwillAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IntangibleAssetsOtherThanGoodwillAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible assets other than goodwill [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterbankAndOvernightFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterbankAndOvernightFundsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interbank and overnight funds [member]",
        "label": "Interbank and overnight funds [member]",
        "terseLabel": "Interbank &amp; overnight funds",
        "verboseLabel": "Interbank loans and overnight funds"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterbankFunds": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterbankFunds",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": "aval_BorrowingsAndOvernightFunds",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of total interbank funds.",
        "label": "Interbank Funds",
        "totalLabel": "Total interbank funds"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterbankFundsPurchased": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterbankFundsPurchased",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": "aval_InterbankFunds",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of interbank funds purchased.",
        "label": "Interbank Funds Purchased",
        "verboseLabel": "Interbank funds purchased"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "aval_InterestIncomeExpenseNetFromContinuingOperations",
       "weight": -1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense",
        "negatedLabel": "Interest expense",
        "negatedTotalLabel": "Total interest expense"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense arising from interest."
       }
      }
     },
     "auth_ref": [
      "r232",
      "r360",
      "r370"
     ]
    },
    "ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseIncomeNetDefinedBenefitLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)",
        "verboseLabel": "Interests cost"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r91"
     ]
    },
    "ifrs-full_InterestExpenseOnBonds": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseOnBonds",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnOtherFinancialLiabilities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on bonds",
        "negatedLabel": "Bonds issued"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest expense on bonds issued. [Refer: Interest expense; Bonds issued]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_InterestExpenseOnBorrowingFromDevelopmentEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestExpenseOnBorrowingFromDevelopmentEntities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnOtherFinancialLiabilities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of interest expenses on borrowing from development entities.",
        "label": "Interest expense on borrowing from development entities",
        "negatedLabel": "Borrowing from development entities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestExpenseOnBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseOnBorrowings",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnOtherFinancialLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on borrowings",
        "negatedLabel": "Borrowings from banks and similar"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_InterestExpenseOnDepositsCheckingAccounts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestExpenseOnDepositsCheckingAccounts",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnDepositsFromCustomers",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of interest expense on deposits from customers. [Refer: Interest expense; Deposits from customers.",
        "label": "Interest expense on deposits checking accounts",
        "negatedLabel": "Checking accounts"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestExpenseOnDepositsFromBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseOnDepositsFromBanks",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnOtherFinancialLiabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on deposits from banks",
        "negatedLabel": "Interbank borrowings and overnight funds"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest expense on deposits from banks. [Refer: Interest expense; Deposits from banks]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_InterestExpenseOnDepositsFromCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseOnDepositsFromCustomers",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_InterestExpense",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails": {
       "parentTag": "aval_InterestIncomeExpenseNetFromDiscontinuedOperations",
       "weight": -1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on deposits from customers",
        "negatedLabel": "Deposits",
        "negatedTotalLabel": "Interest expense on deposits from customers"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest expense on deposits from customers. [Refer: Interest expense; Deposits from customers]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_InterestExpenseOnDepositsSavingsAccounts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestExpenseOnDepositsSavingsAccounts",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnDepositsFromCustomers",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of interest expense on deposits from customers. [Refer: Interest expense; Deposits from customers]",
        "label": "Interest expense on deposits savings accounts",
        "negatedLabel": "Savings accounts"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestExpenseOnDepositsTimeDeposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestExpenseOnDepositsTimeDeposits",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnDepositsFromCustomers",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of interest expense on deposits from customers. [Refer: Interest expense; Deposits from customers]",
        "label": "Interest expense on deposits time deposits",
        "negatedLabel": "Time deposits"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestExpenseOnFinancialLiabilitiesDesignatedAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseOnFinancialLiabilitiesDesignatedAtFairValueThroughProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnDepositsFromCustomers",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on financial liabilities designated at fair value through profit or loss",
        "negatedLabel": "Interest of the derivative designated as the hedging instrument"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest expense on financial liabilities designated at fair value through profit or loss. [Refer: Interest expense; Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_InterestExpenseOnLeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseOnLeaseLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": "ifrs-full_InterestExpenseOnOtherFinancialLiabilities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on lease liabilities",
        "negatedLabel": "Leases contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest expense on lease liabilities. [Refer: Lease liabilities]"
       }
      }
     },
     "auth_ref": [
      "r264"
     ]
    },
    "ifrs-full_InterestExpenseOnOtherFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestExpenseOnOtherFinancialLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_InterestExpense",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails": {
       "parentTag": "aval_InterestIncomeExpenseNetFromDiscontinuedOperations",
       "weight": -1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on other financial liabilities",
        "negatedLabel": "Financial obligations",
        "negatedTotalLabel": "Total Financial obligations"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest expense on other financial liabilities. [Refer: Interest expense; Other financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_InterestExpensesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestExpensesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterestExpenseInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expenses [Abstract]",
        "terseLabel": "Expenses",
        "verboseLabel": "Interest expense"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestIncomeAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income [Abstract]",
        "verboseLabel": "Interest income calculated using the effective interest method"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestIncomeAfterImpairmentLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestIncomeAfterImpairmentLosses",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of net interest income after impairment losses.",
        "label": "Interest income after impairment losses",
        "totalLabel": "Net interest income, after impairment losses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestIncomeExpenseNetFromContinuingOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestIncomeExpenseNetFromContinuingOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "aval_InterestIncomeAfterImpairmentLosses",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest income (expense), net from continuing operations",
        "label": "Interest income (expense), net from continuing operations",
        "totalLabel": "Net interest income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestIncomeExpenseNetFromDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestIncomeExpenseNetFromDiscontinuedOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest income (expense) net from discontinued operations",
        "label": "Interest income (expense), net from discontinued operations",
        "totalLabel": "Net interest income"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestIncomeOnDebtInstrumentsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestIncomeOnDebtInstrumentsHeld",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_RevenueFromInterest",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income on debt instruments held",
        "verboseLabel": "Investments in debt securities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest income on debt instruments held. [Refer: Interest income; Debt instruments held]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_InterestIncomeOnFinancialAssetsAtAmortisedCostLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestIncomeOnFinancialAssetsAtAmortisedCostLoans",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_RevenueFromInterest",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest income on financial assets at amortised cost, loans",
        "label": "Interest income on financial assets at amortised cost, loans",
        "terseLabel": "Loan portfolio",
        "verboseLabel": "Total interest income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestIncomeOnFinancialAssetsAtAmortisedCostLoansInterestIncomeOfCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestIncomeOnFinancialAssetsAtAmortisedCostLoansInterestIncomeOfCashAndCashEquivalents",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest income on financial assets at amortised cost, loans, interest income of cash and cash equivalents",
        "label": "Interest income on financial assets at amortised cost, loans, interest income of cash and cash equivalents",
        "terseLabel": "Iinterest income of cash and cash equivalents"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income on financial assets designated at fair value through profit or loss",
        "terseLabel": "Interest income of the derivative designated as the hedging instrument"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of interest income on financial assets designated at fair value through profit or loss. [Refer: Interest income; Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_InterestPaidClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestPaidClassifiedAsOperatingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 23.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest paid, classified as operating activities",
        "negatedLabel": "Interest paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for interest paid, classified as operating activities."
       }
      }
     },
     "auth_ref": [
      "r194"
     ]
    },
    "aval_InterestPaidDividendsPayableBondsIssuedAndLeasesClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestPaidDividendsPayableBondsIssuedAndLeasesClassifiedAsOperatingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest paid, dividends payable, bonds issued, and leases, classified as operating activities",
        "label": "Interest paid, dividends payable, bonds issued, and leases, classified as operating activities",
        "negatedLabel": "Interest paid"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestPaidLeases": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestPaidLeases",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of interest paid on lease activities.",
        "label": "Interest Paid, Leases",
        "negatedLabel": "Interest paid on leases"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestRateOnInvestments": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestRateOnInvestments",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest rate on investments",
        "label": "Interest rate on investments",
        "terseLabel": "Interest rate on investments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InterestRatePercentageOnOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InterestRatePercentageOnOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest rate percentage on one year projection",
        "label": "Interest Rate Percentage On One Year Projection",
        "terseLabel": "Interest rate, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestRateRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestRateRiskMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest rate risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the type of risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market interest rates. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r277",
      "r278",
      "r279",
      "r280",
      "r355"
     ]
    },
    "ifrs-full_InterestRateSwapContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestRateSwapContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest rate swap contract [member]",
        "terseLabel": "Interest rate swap",
        "verboseLabel": "Interest rate risk"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an interest rate swap contract. [Refer: Swap contract [member]]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_InterestReceivedClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestReceivedClassifiedAsOperatingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 22.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest received, classified as operating activities",
        "verboseLabel": "Interest received"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from interest received, classified as operating activities."
       }
      }
     },
     "auth_ref": [
      "r194"
     ]
    },
    "ifrs-full_InterestRevenueExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InterestRevenueExpense",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income (expense)",
        "negatedLabel": "Net interest income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income or expense arising from interest. [Refer: Interest expense; Interest income]"
       }
      }
     },
     "auth_ref": [
      "r364",
      "r370",
      "r597"
     ]
    },
    "aval_InternallyGeneratedDevelopingOtherIntangibleAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InternallyGeneratedDevelopingOtherIntangibleAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to internally generated developing other intangible assets.",
        "label": "Internally Generated - Developing"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InternallyGeneratedInUseOtherIntangibleAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InternallyGeneratedInUseOtherIntangibleAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to internally generated in use other intangible assets.",
        "label": "Internally Generated - In Use"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InternallyGeneratedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InternallyGeneratedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internally generated [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for items that have been internally generated by the entity."
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "ifrs-full_InvestmentAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 8.0
      },
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTabularDisclosureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments accounted for using equity method",
        "totalLabel": "Total",
        "verboseLabel": "Investments in associates and joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]"
       }
      }
     },
     "auth_ref": [
      "r16",
      "r235",
      "r365"
     ]
    },
    "aval_InvestmentCommitmentExpansionReplacementAndImprovementOfInfrastructureAdvancePercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentCommitmentExpansionReplacementAndImprovementOfInfrastructureAdvancePercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment commitment, expansion, replacement and improvement of infrastructure, advance, percentage",
        "label": "Investment commitment, expansion, replacement and improvement of infrastructure, advance, percentage",
        "terseLabel": "Investment commitment, expansion, replacement and improvement of infrastructure, advance, percentage"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentFundsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment funds [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for investment funds."
       }
      }
     },
     "auth_ref": [
      "r420"
     ]
    },
    "aval_InvestmentGradeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentGradeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment grade [member]",
        "terseLabel": "Investment grade"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentInDebtAtAmortizedCostSecuritiesPledgedAsCollateralTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentInDebtAtAmortizedCostSecuritiesPledgedAsCollateralTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular information disclosure of Investment in debt at amortized cost securities pledged as collateral.",
        "label": "Investment In Debt At Amortized Cost Securities Pledged As Collateral [Table Text Block]",
        "terseLabel": "Investment in debt at amortized cost securities pledged as collateral"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentInDebtAtFvociSecuritiesPledgedAsCollateralTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentInDebtAtFvociSecuritiesPledgedAsCollateralTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of Investment in debt at FVOCI securities pledged as collateral.",
        "label": "Investment in Debt At FVOCI Securities Pledged As Collateral [Table Text Block]",
        "terseLabel": "Investment in debt at FVOCI securities pledged as collateral"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentInDebtInstrumentAsPercentageOfTotalPortfolio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentInDebtInstrumentAsPercentageOfTotalPortfolio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The investment in debt instrument as a percentage of total investment portfolio.",
        "label": "Investment in debt instrument as a percentage of total portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentInJointVenturesAcquiredDuringPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentInJointVenturesAcquiredDuringPeriod",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment in joint ventures acquired during period",
        "label": "Investment in joint ventures acquired during period",
        "terseLabel": "Acquisitions"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentInterestRateSpreadOnVariableRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentInterestRateSpreadOnVariableRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment interest rate, spread on variable rate.",
        "label": "Investment Interest Rate, Spread on Variable Rate",
        "terseLabel": "Variable rate"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentProperty",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment property",
        "totalLabel": "Investment properties",
        "verboseLabel": "Investment properties"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee as a right-of-use asset) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business."
       }
      }
     },
     "auth_ref": [
      "r14",
      "r184",
      "r187"
     ]
    },
    "aval_InvestmentPropertyAccumulatedAdjustmentsToFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentPropertyAccumulatedAdjustmentsToFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails": {
       "parentTag": "ifrs-full_InvestmentProperty",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment property, accumulated adjustments to fair value",
        "label": "Investment property, accumulated adjustments to fair value",
        "terseLabel": "Investment properties, accumulated adjustments to fair value"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentPropertyCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentPropertyCost",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails": {
       "parentTag": "ifrs-full_InvestmentProperty",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment property, cost",
        "label": "Investment property, cost",
        "terseLabel": "Investment properties, cost"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentPropertyFairValueUsedAsDeemedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentPropertyFairValueUsedAsDeemedCost",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment property fair value used as deemed cost",
        "terseLabel": "Investment carrying amount as of April 1, (The fair value of the retained interest)."
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investment property, for which fair value was used as deemed cost in the opening IFRS statement of financial position. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r207"
     ]
    },
    "ifrs-full_InvestmentPropertyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentPropertyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment property [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r423",
      "r426"
     ]
    },
    "aval_InvestmentSecuritiesAtAmortisedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentSecuritiesAtAmortisedCostMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment securities at amortised cost [member]",
        "label": "Investment securities at amortised cost [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentSecuritiesAtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentSecuritiesAtFairValueMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesMandatorilyAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment securities at fair value [member]",
        "label": "Investment securities at fair value [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment securities [member]",
        "label": "Investment securities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentSecuritiesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentSecuritiesNet",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The carrying balance as on the balance sheet of the investment securities net of impairment loss.",
        "label": "Investment securities, net",
        "terseLabel": "Investment securities",
        "verboseLabel": "Investment securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_InvestmentSubjectToValueAtRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentSubjectToValueAtRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of investment subject to value at risk.",
        "label": "Investment subject to value at risk",
        "terseLabel": "Investment subject to Regulatory VaR"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsInAssociatesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentsInAssociatesAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_InvestmentAccountedForUsingEquityMethod",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in associates accounted for using equity method",
        "periodEndLabel": "Year-end balance",
        "periodStartLabel": "Balance at the beginning of the year",
        "terseLabel": "Book value",
        "verboseLabel": "Associates"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in associates accounted for using the equity method. [Refer: Total for all associates [member]; Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_InvestmentsInAssociatesAndJointVenturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "InvestmentsInAssociatesAndJointVenturesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in associates and joint ventures"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesBalancesOfInvestmentSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInEquitySecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in equity instruments designated at fair value through other comprehensive income [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: At fair value [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r347"
     ]
    },
    "ifrs-full_InvestmentsInJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentsInJointVenturesAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_InvestmentAccountedForUsingEquityMethod",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in joint ventures accounted for using equity method",
        "periodEndLabel": "Year-end balance",
        "periodStartLabel": "Balance at the beginning of the year",
        "terseLabel": "Book value",
        "verboseLabel": "Joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in joint ventures accounted for using the equity method. [Refer: Total for all joint ventures [member]; Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_InvestmentsInSubsidiaries": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "InvestmentsInSubsidiaries",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in subsidiaries reported in separate financial statements",
        "verboseLabel": "Investment amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in subsidiaries in an entity's separate financial statements. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r124"
     ]
    },
    "ifrs-full_IssueOfEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IssueOfEquity",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issue of equity",
        "terseLabel": "Value issuance of shares",
        "verboseLabel": "Issuance of shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in equity through the issue of equity instruments."
       }
      }
     },
     "auth_ref": [
      "r4"
     ]
    },
    "ifrs-full_IssuedCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IssuedCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_EquityAttributableToOwnersOfParent",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issued capital",
        "terseLabel": "Subscribed and paid-in capital",
        "verboseLabel": "Subscribed and paid-in capital"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal value of capital issued."
       }
      }
     },
     "auth_ref": [
      "r390"
     ]
    },
    "ifrs-full_IssuedCapitalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "IssuedCapitalMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issued capital [member]",
        "terseLabel": "Subscribed and paid-in capital"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing issued capital."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    },
    "country_JP": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "JP",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "JAPAN"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_JointControlOrSignificantInfluenceMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "JointControlOrSignificantInfluenceMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entities with joint control or significant influence over entity [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for entities that have joint control or significant influence over the entity. Joint control is a contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Significant influence is the power to participate in the financial and operating policy decisions of the investee, but not control or joint control of those policies."
       }
      }
     },
     "auth_ref": [
      "r114"
     ]
    },
    "ifrs-full_JointVenturesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "JointVenturesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Joint ventures [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r237"
     ]
    },
    "ifrs-full_JointVenturesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "JointVenturesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Joint ventures [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Joint ventures' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r237"
     ]
    },
    "ifrs-full_JointVenturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "JointVenturesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total for all joint ventures [member]",
        "terseLabel": "Joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for joint arrangements whereby the parties that have joint control of the arrangement have rights to the net assets of the arrangement."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r237"
     ]
    },
    "ifrs-full_KeyManagementPersonnelCompensation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelCompensation",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Key management personnel compensation",
        "totalLabel": "Total"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]"
       }
      }
     },
     "auth_ref": [
      "r112"
     ]
    },
    "aval_KeyManagementPersonnelCompensationFee": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "KeyManagementPersonnelCompensationFee",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of fees paid to key management personnel.",
        "label": "Key Management Personnel Compensation, Fee",
        "terseLabel": "Fee"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelCompensationOtherLongtermBenefits",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Key management personnel compensation, other long-term employee benefits",
        "terseLabel": "Long term benefits for employees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of compensation to key management personnel in the form of other long-term employee benefits. [Refer: Other long-term employee benefits; Key management personnel of entity or parent [member]]"
       }
      }
     },
     "auth_ref": [
      "r110"
     ]
    },
    "ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelCompensationShorttermEmployeeBenefits",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Key management personnel compensation, short-term employee benefits",
        "terseLabel": "Short term benefits for employees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]"
       }
      }
     },
     "auth_ref": [
      "r109"
     ]
    },
    "ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelCompensationTerminationBenefits",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Key management personnel compensation, termination benefits",
        "terseLabel": "Termination benefits"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of compensation to key management personnel in the form of termination benefits. [Refer: Termination benefits expense; Key management personnel of entity or parent [member]]"
       }
      }
     },
     "auth_ref": [
      "r111"
     ]
    },
    "ifrs-full_KeyManagementPersonnelOfEntityOrParentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelOfEntityOrParentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Key management personnel of entity or parent [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for those persons having authority and responsibility for planning, directing and controlling the activities of the entity, directly or indirectly, including any director (whether executive or otherwise) of that entity."
       }
      }
     },
     "auth_ref": [
      "r117"
     ]
    },
    "aval_LaborProceedingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaborProceedingsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCommitmentsAndContingenciesContingenciesDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Labor proceedings [member]",
        "label": "Labor proceedings [member]",
        "terseLabel": "Labor proceedings"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LaborSeveranceExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaborSeveranceExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of labor severance expense incurred during period.",
        "label": "Labor Severance Expenses",
        "negatedLabel": "Labor severances"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LandMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LandMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesSummaryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Land [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing land held by the entity for use in operations. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r396"
     ]
    },
    "aval_LaterThanEightYearsAndNotLaterThanNineYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaterThanEightYearsAndNotLaterThanNineYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Later than eight years and not later than nine years [member]",
        "label": "Later than eight years and not later than nine years [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LaterThanFiveYearsAndNotLaterThanSixYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaterThanFiveYearsAndNotLaterThanSixYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Later than five years and not later than six years [member]",
        "label": "Later than five years and not later than six years [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanFiveYearsAndNotLaterThanTenYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than five years and not later than ten years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than five years and not later than ten years."
       }
      }
     },
     "auth_ref": [
      "r453",
      "r465",
      "r590"
     ]
    },
    "ifrs-full_LaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanFiveYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than five years [member]",
        "terseLabel": "More than 5 years"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than five years."
       }
      }
     },
     "auth_ref": [
      "r271",
      "r273",
      "r282",
      "r453",
      "r460",
      "r465"
     ]
    },
    "ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanFourYearsAndNotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than four years and not later than five years [member]",
        "verboseLabel": "Not later than Five Year"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than four years and not later than five years."
       }
      }
     },
     "auth_ref": [
      "r271",
      "r273",
      "r282",
      "r453",
      "r465",
      "r590"
     ]
    },
    "aval_LaterThanNineYearsAndNotLaterThanTenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaterThanNineYearsAndNotLaterThanTenYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Later than nine years and not later than ten years [member]",
        "label": "Later than nine years and not later than ten years [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LaterThanOneDayAndNotLaterThanSevenDaysMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaterThanOneDayAndNotLaterThanSevenDaysMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Later than one day and not later than seven days [member]",
        "label": "Later than one day and not later than seven days [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanOneMonthAndNotLaterThanSixMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanOneMonthAndNotLaterThanSixMonthsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one month and not later than six months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one month and not later than six months."
       }
      }
     },
     "auth_ref": [
      "r453",
      "r465"
     ]
    },
    "ifrs-full_LaterThanOneMonthAndNotLaterThanThreeMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanOneMonthAndNotLaterThanThreeMonthsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one month and not later than three months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one month and not later than three months."
       }
      }
     },
     "auth_ref": [
      "r450",
      "r456",
      "r465"
     ]
    },
    "ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanOneMonthAndNotLaterThanTwoMonthsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one month and not later than two months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one month and not later than two months."
       }
      }
     },
     "auth_ref": [
      "r446",
      "r464",
      "r590"
     ]
    },
    "ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanOneYearAndNotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one year and not later than five years [member]",
        "terseLabel": "From 1 to 5 years"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year and not later than five years."
       }
      }
     },
     "auth_ref": [
      "r452",
      "r465"
     ]
    },
    "ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanOneYearAndNotLaterThanThreeYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one year and not later than three years [member]",
        "verboseLabel": "From 1 to 3 years"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year and not later than three years."
       }
      }
     },
     "auth_ref": [
      "r453",
      "r458",
      "r465"
     ]
    },
    "ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanOneYearAndNotLaterThanTwoYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one year and not later than two years [member]",
        "verboseLabel": "Not later than Two Year"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year and not later than two years."
       }
      }
     },
     "auth_ref": [
      "r271",
      "r273",
      "r282",
      "r453",
      "r465",
      "r590"
     ]
    },
    "ifrs-full_LaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanOneYearMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one year [member]",
        "verboseLabel": "Later than one year"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year."
       }
      }
     },
     "auth_ref": [
      "r30"
     ]
    },
    "aval_LaterThanSevenYearsAndNotLaterThanEightYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaterThanSevenYearsAndNotLaterThanEightYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Later than seven years and not later than eight years [member]",
        "label": "Later than seven years and not later than eight years [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanSixMonthsAndNotLaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanSixMonthsAndNotLaterThanOneYearMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than six months and not later than one year [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than six months and not later than one year."
       }
      }
     },
     "auth_ref": [
      "r453",
      "r457",
      "r465"
     ]
    },
    "aval_LaterThanSixYearsAndNotLaterThanSevenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaterThanSixYearsAndNotLaterThanSevenYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Later than six years and not later than seven years [member]",
        "label": "Later than six years and not later than seven years [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LaterThanTenYearsAndNotLaterThanElevenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LaterThanTenYearsAndNotLaterThanElevenYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Later than ten years and not later than eleven years [member]",
        "label": "Later than ten years and not later than eleven years [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanTenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanTenYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than ten years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than ten years."
       }
      }
     },
     "auth_ref": [
      "r453",
      "r465",
      "r590"
     ]
    },
    "ifrs-full_LaterThanThreeMonthsAndNotLaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanThreeMonthsAndNotLaterThanOneYearMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three months and not later than one year [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three months and not later than one year."
       }
      }
     },
     "auth_ref": [
      "r451"
     ]
    },
    "ifrs-full_LaterThanThreeMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanThreeMonthsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three months."
       }
      }
     },
     "auth_ref": [
      "r446",
      "r464"
     ]
    },
    "ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanThreeYearsAndNotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three years and not later than five years [member]",
        "verboseLabel": "From 3 to 5 years"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three years and not later than five years."
       }
      }
     },
     "auth_ref": [
      "r453",
      "r459",
      "r465"
     ]
    },
    "ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanThreeYearsAndNotLaterThanFourYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three years and not later than four years [member]",
        "verboseLabel": "Not later than Four Year"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three years and not later than four years."
       }
      }
     },
     "auth_ref": [
      "r271",
      "r273",
      "r282",
      "r453",
      "r465",
      "r590"
     ]
    },
    "ifrs-full_LaterThanThreeYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanThreeYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three years."
       }
      }
     },
     "auth_ref": [
      "r453",
      "r465"
     ]
    },
    "ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than two months and not later than three months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than two months and not later than three months."
       }
      }
     },
     "auth_ref": [
      "r446",
      "r464",
      "r590"
     ]
    },
    "ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LaterThanTwoYearsAndNotLaterThanThreeYearsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than two years and not later than three years [member]",
        "verboseLabel": "Not later than Three Year"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than two years and not later than three years."
       }
      }
     },
     "auth_ref": [
      "r271",
      "r273",
      "r282",
      "r453",
      "r465",
      "r590"
     ]
    },
    "aval_LeaseAgreementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LeaseAgreementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lease agreement [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LeaseLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lease liabilities",
        "positiveLabel": "Leases contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration."
       }
      }
     },
     "auth_ref": [
      "r262"
     ]
    },
    "ifrs-full_LeaseLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LeaseLiabilitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lease liabilities [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for lease liabilities. [Refer: Lease liabilities]"
       }
      }
     },
     "auth_ref": [
      "r416",
      "r418"
     ]
    },
    "ifrs-full_LeaseReceivablesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LeaseReceivablesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lease receivables [member]",
        "terseLabel": "Leases"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for receivables related to leases."
       }
      }
     },
     "auth_ref": [
      "r328",
      "r335",
      "r446"
     ]
    },
    "ifrs-full_LeaseholdImprovementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LeaseholdImprovementsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Leasehold improvements [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing improvements to assets held under a lease agreement."
       }
      }
     },
     "auth_ref": [
      "r601"
     ]
    },
    "aval_LeasesContractsLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LeasesContractsLiabilitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Leases contracts liabilities [member]",
        "label": "Leases contracts liabilities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "dei_LegalEntityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "LegalEntityAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal Entity [Axis]",
        "documentation": "The set of legal entities associated with a report."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LegalProceedingsProvision": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LegalProceedingsProvision",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Provisions",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal proceedings provision",
        "verboseLabel": "Legal related"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of provision for legal proceedings. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r405",
      "r407"
     ]
    },
    "ifrs-full_LegalProceedingsProvisionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LegalProceedingsProvisionMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal proceedings provision [member]",
        "terseLabel": "Legal proceedings provision"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a provision for legal proceedings. [Refer: Classes of other provisions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r405",
      "r407"
     ]
    },
    "aval_LegalReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LegalReserve",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails": {
       "parentTag": "ifrs-full_RetainedEarnings",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A component of equity representing legal reserve.",
        "label": "Legal reserve",
        "verboseLabel": "Legal reserve"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LegalReserveAsPercentageOfNetProfit": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LegalReserveAsPercentageOfNetProfit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentLegalReserveDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The percentage of net profit to calculate legal reserve.",
        "label": "Legal reserve as percentage of net profit",
        "terseLabel": "Legal reserve as percentage of net profit"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LettersOfCredit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LettersOfCredit",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount.",
        "label": "Letters of Credit"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Level1OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Level1OfFairValueHierarchyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level 1 of fair value hierarchy [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date."
       }
      }
     },
     "auth_ref": [
      "r99",
      "r142",
      "r148",
      "r242"
     ]
    },
    "ifrs-full_Level2OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Level2OfFairValueHierarchyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level 2 of fair value hierarchy [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly."
       }
      }
     },
     "auth_ref": [
      "r142",
      "r148",
      "r242"
     ]
    },
    "ifrs-full_Level3OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Level3OfFairValueHierarchyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level 3 of fair value hierarchy [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are unobservable inputs for the asset or liability. Unobservable inputs are inputs for which market data are not available and that are developed using the best information available about the assumptions that the market participants would use when pricing the asset or liability."
       }
      }
     },
     "auth_ref": [
      "r142",
      "r148",
      "r242"
     ]
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseCashFlowRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseCashFlowRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, cash flow rate",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, cash flow rate",
        "terseLabel": "Scenario 2, decreases in the sensitivity analysis of cash flow rate (square meter) (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseInitialCapitalizationRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseInitialCapitalizationRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, initial capitalization rate",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, initial capitalization rate",
        "terseLabel": "Scenario 2, decreases in the sensitivity analysis of initial capitalization rate (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseMarketIncome": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseMarketIncome",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, market income",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, market income",
        "terseLabel": "Scenario 2, decreases in the sensitivity analysis of market income (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseMarketValue": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableDecreaseMarketValue",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, market value",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, decrease, market value",
        "terseLabel": "Scenario 2, decreases in the sensitivity analysis of market value (square meter) (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseCashFlowRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseCashFlowRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, cash flow rate",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, cash flow rate",
        "terseLabel": "Scenario 1, increases in the sensitivity analysis of cash flow discount rate (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseInitialCapitalizationRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseInitialCapitalizationRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, initial capitalization rate",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, initial capitalization rate",
        "terseLabel": "Scenario 1, increases in the sensitivity analysis of initial capitalization rate (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseMarketIncome": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseMarketIncome",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, market income",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, market income",
        "terseLabel": "Scenario 1, increases in the sensitivity analysis of market income (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseMarketValue": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Level3OfFairValueHierarchyValuationOfEquityInstrumentsThroughProfitOrLossSensitivityAnalysisVariableIncreaseMarketValue",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsThroughProfitOrLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, market value",
        "label": "Level 3 of fair value hierarchy, valuation of equity instruments through profit or loss, sensitivity analysis, variable, increase, market value",
        "terseLabel": "Scenario 1, increases in the sensitivity analysis of market value (square meter) (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LevelOneToTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LevelOneToTwoMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level one to two"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LevelTwoToOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LevelTwoToOneMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level two to one"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LevelsOfFairValueHierarchyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LevelsOfFairValueHierarchyAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Levels of fair value hierarchy [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r99",
      "r242"
     ]
    },
    "ifrs-full_LevelsOfFairValueHierarchyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LevelsOfFairValueHierarchyDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Levels of fair value hierarchy [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all levels of the fair value hierarchy. It also represents the standard value for the 'Levels of fair value hierarchy' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r99",
      "r242"
     ]
    },
    "ifrs-full_Liabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Liabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_EquityAndLiabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities",
        "terseLabel": "Liabilities",
        "totalLabel": "Total liabilities",
        "verboseLabel": "Total liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits."
       }
      }
     },
     "auth_ref": [
      "r27",
      "r241",
      "r242",
      "r248",
      "r364",
      "r369"
     ]
    },
    "ifrs-full_LiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LiabilitiesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities [abstract]",
        "terseLabel": "Liabilities",
        "verboseLabel": "Liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities included in disposal groups classified as held for sale",
        "terseLabel": "Total"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]]"
       }
      }
     },
     "auth_ref": [
      "r24",
      "r298"
     ]
    },
    "ifrs-full_LiabilityAssetOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LiabilityAssetOfDefinedBenefitPlans",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability (asset)",
        "periodEndLabel": "Balance at the end of the year",
        "periodStartLabel": "Balance at the beginning of the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r89"
     ]
    },
    "aval_LiabilityForCanceledAccounts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LiabilityForCanceledAccounts",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Liability for canceled accounts",
        "label": "Liability for canceled accounts",
        "terseLabel": "Canceled accounts"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LicencesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LicencesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Licences [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets representing the right to use certain intangible assets owned by another entity. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r614"
     ]
    },
    "ifrs-full_LifetimeExpectedCreditLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LifetimeExpectedCreditLossesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lifetime expected credit losses [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the expected credit losses that result from all possible default events over the expected life of a financial instrument. [Refer: Type of measurement of expected credit losses [domain]]"
       }
      }
     },
     "auth_ref": [
      "r329",
      "r336"
     ]
    },
    "aval_LiquidityRequirement": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LiquidityRequirement",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Liquidity requirement",
        "label": "Liquidity requirement",
        "terseLabel": "Amount of IRL ratio"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LiquidityRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LiquidityRiskMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liquidity risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the risk that an entity will encounter difficulty in meeting obligations associated with financial liabilities that are settled by delivering cash or another financial asset. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r277",
      "r278",
      "r279",
      "r440"
     ]
    },
    "aval_LoanCommitmentsAndFinancialGuaranteeContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoanCommitmentsAndFinancialGuaranteeContractsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan commitments and financial guarantee contracts [member]",
        "label": "Loan commitments and financial guarantee contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LoanCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LoanCommitmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loan commitments [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for firm commitments to provide credit under pre-specified terms and conditions."
       }
      }
     },
     "auth_ref": [
      "r337",
      "r353"
     ]
    },
    "aval_LoanPortfolioAndInvestmentsInDebtSecuritiesAtAmortisedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoanPortfolioAndInvestmentsInDebtSecuritiesAtAmortisedCostMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan portfolio and investments in debt securities at amortised cost [member]",
        "label": "Loan portfolio and investments in debt securities at amortised cost [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoanPortfolioAndInvestmentsLendingRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoanPortfolioAndInvestmentsLendingRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan portfolio and investments, lending rate",
        "label": "Loan portfolio and investments, lending rate",
        "terseLabel": "Lending rate on the loan portfolio and investments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoanPortfolioDeliveredAsCollateral": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoanPortfolioDeliveredAsCollateral",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoanPortfolioGivenAsCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan portfolio delivered as collateral",
        "label": "Loan portfolio delivered as collateral",
        "terseLabel": "Loan portfolio delivered as collateral"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoanPortfolioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoanPortfolioMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueFairValueOfFinancialAssetsRecognizedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan portfolio [member]",
        "label": "Loan portfolio [member]",
        "terseLabel": "Loan portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoanReceivableTerm": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoanReceivableTerm",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan Receivable Term",
        "label": "Loan Receivable Term",
        "terseLabel": "Loan receivable term"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoansAndReceivablesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoansAndReceivablesAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans and receivables [Abstract]",
        "verboseLabel": "Loans"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoansAndReceivablesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoansAndReceivablesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loans and receivables [member]",
        "label": "Loans and receivables [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoansAndReceivablesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoansAndReceivablesNet",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loans and receivables, net",
        "label": "Loans and receivables, net",
        "terseLabel": "Loans, net",
        "totalLabel": "Total loans, net"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoansAndReceivablesRestructured": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoansAndReceivablesRestructured",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsRestructuredLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "It represents the amount of modifications on loans and other receivables",
        "label": "Loans and Receivables, Restructured",
        "terseLabel": "Restructured loans"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoansFundedByDevelopmentBanksMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoansFundedByDevelopmentBanksMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans funded by development banks [member]",
        "terseLabel": "Loans funded by development banks"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LoansSecuredByOtherBanksMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LoansSecuredByOtherBanksMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans secured by other banks"
       }
      }
     },
     "auth_ref": []
    },
    "dei_LocalPhoneNumber": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "LocalPhoneNumber",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Local Phone Number",
        "documentation": "Local phone number for entity."
       }
      }
     },
     "auth_ref": []
    },
    "aval_LongtermbenefitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LongtermbenefitsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Longterm benefits",
        "label": "Long-Term Benefits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LossFromSaleOfPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LossFromSaleOfPropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 22.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loss from sale of property, plant and equipment",
        "label": "Loss from sale of property, plant and equipment",
        "negatedLabel": "Loss from sale of property, plant and equipment"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LossGivenDefaultRecoveryRatesWeightage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LossGivenDefaultRecoveryRatesWeightage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The percentage of loss given default recovery rate weightage.",
        "label": "Loss Given Default Recovery Rates Weightage",
        "verboseLabel": "LGD recovery rate weights"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LossesDueToClaims": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LossesDueToClaims",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to the losses due to claims.",
        "label": "Losses Due To Claims",
        "negatedLabel": "Losses due to claims"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LossesOnDisposalsOfNoncurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "LossesOnDisposalsOfNoncurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 24.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Losses on disposals of non-current assets",
        "negatedLabel": "Loss from sale of non-current assets held for sale"
       }
      },
      "en": {
       "role": {
        "documentation": "The losses on disposals of non-current assets. [Refer: Non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_Ltv51To70PercentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Ltv51To70PercentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan-to-value (LTV) ratio from 51 to 70%. Element name and standard label in LTV [numeric lower end] to [numeric higher end] Percent [Member] format.",
        "label": "51 - 70%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Ltv71To90PercentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Ltv71To90PercentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan-to-value (LTV) ratio from 71 to 90%. Element name and standard label in LTV [numeric lower end] to [numeric higher end] Percent [Member] format.",
        "label": "71 - 90%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Ltv90To100PercentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Ltv90To100PercentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan-to-value (LTV) ratio from 90 to 100%. Element name and standard label in LTV [numeric lower end] to [numeric higher end] Percent [Member] format.",
        "label": "91 - 100%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LtvLessThan50PercentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LtvLessThan50PercentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan-to-value (LTV) ratio less than 50%. Element name and standard label in LTV Greater Than [low end numeric value] Percent [Member] or LTV Less Than [high end numeric value] Percent [Member] formats.",
        "label": "Less than 50%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LtvMoreThan100PercentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LtvMoreThan100PercentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan-to-value (LTV) ratio more than 100%. Element name and standard label in LTV Greater Than [low end numeric value] Percent [Member] or LTV Less Than [high end numeric value] Percent [Member] formats.",
        "label": "More than 100%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_LtvMoreThan70PercentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "LtvMoreThan70PercentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Loan-to-value (LTV) ratio more than 70%. Element name and standard label in LTV Greater Than [low end numeric value] Percent [Member] or LTV Less Than [high end numeric value] Percent [Member] formats.",
        "label": "More than 70%"
       }
      }
     },
     "auth_ref": []
    },
    "country_MX": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "MX",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "MEXICO"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MachineryAndEquipmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MachineryAndEquipmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Machinery and equipments [Member]",
        "terseLabel": "Machinery and equipment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MachineryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MachineryMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Machinery [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing long-lived, depreciable machinery used in operations. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r397"
     ]
    },
    "aval_MajorComponentsOfIncomeTaxExpensesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MajorComponentsOfIncomeTaxExpensesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure of components of income tax expenses.",
        "label": "Major Components Of Income Tax Expenses [Text Block]",
        "terseLabel": "Schedule components of the income tax expense"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ManagedFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ManagedFundsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Managed funds [member]",
        "label": "Managed funds [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MandatoryReserveDepositsAtCentralBanks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MandatoryReserveDepositsAtCentralBanks",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCashAndCashEquivalentsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mandatory reserve deposits at central banks",
        "terseLabel": "Cash reserves"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of reserve that is kept in deposit at a central bank to fulfil regulatory reserve requirements."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_ManufacturingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ManufacturingMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Manufacturing [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MarketComparablePricesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MarketComparablePricesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Market comparable prices [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a specific valuation technique consistent with the market approach that involves analysing inputs from comparable prices (for example, price per square metre) in the current market. [Refer: Market approach [member]]"
       }
      }
     },
     "auth_ref": [
      "r424",
      "r427"
     ]
    },
    "aval_MarketRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MarketRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Market risk.",
        "label": "Market Risk",
        "terseLabel": "Market risk"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MarketRiskExposure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MarketRiskExposure",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Market risk exposure.",
        "label": "Market Risk Exposure",
        "terseLabel": "Market risk exposure"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MarketRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MarketRiskMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Market risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market prices. Market risk comprises three types of risk: currency risk, interest rate risk and other price risk. [Refer: Currency risk [member]; Interest rate risk [member]; Other price risk [member]; Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r277",
      "r278",
      "r279",
      "r280",
      "r440"
     ]
    },
    "aval_MarketRiskWeightedAssetsAsPercentageOfTotalRiskWeightedAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MarketRiskWeightedAssetsAsPercentageOfTotalRiskWeightedAssets",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of market risk weighted assets as a percentage of total risk weighted assets.",
        "label": "Market risk weighted assets as a percentage of total risk weighted assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MaterialReconcilingItemsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MaterialReconcilingItemsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Material reconciling items [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for material adjustments used to reconcile items in the entity's financial statements."
       }
      }
     },
     "auth_ref": [
      "r371"
     ]
    },
    "ifrs-full_MaturityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MaturityAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maturity [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r31",
      "r257",
      "r271",
      "r273",
      "r274",
      "r275",
      "r276",
      "r282",
      "r310",
      "r339",
      "r403",
      "r453"
     ]
    },
    "ifrs-full_MaturityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MaturityDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maturity [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated time bands. It also represents the standard value for the 'Maturity' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r31",
      "r257",
      "r271",
      "r273",
      "r274",
      "r275",
      "r276",
      "r282",
      "r310",
      "r403",
      "r453",
      "r461"
     ]
    },
    "aval_MaximumDeltaEconomicValueOfEquityMetric": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MaximumDeltaEconomicValueOfEquityMetric",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Maximum amount of fluctuation of equity in response to changes in interest rates using a liquidation balance sheet.",
        "label": "Maximum Delta Economic Value Of Equity Metric",
        "terseLabel": "Maximum Delta VEP"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MaximumDeltaNetInterestMarginMetric": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MaximumDeltaNetInterestMarginMetric",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Maximum amount increase (decrease) on interest income due to movements in interest rates using a constant balance sheet and a 12-month window.",
        "label": "Maximum Delta Net Interest Margin Metric",
        "terseLabel": "Maximum Delta MNI"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MaximumExposureToCreditRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MaximumExposureToCreditRisk",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maximum exposure to credit risk",
        "terseLabel": "Maximum exposure to credit risk",
        "totalLabel": "Maximum exposure to credit risk"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r332"
     ]
    },
    "ifrs-full_MaximumExposureToCreditRiskOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MaximumExposureToCreditRiskOfFinancialAssets",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails": {
       "parentTag": "ifrs-full_MaximumExposureToCreditRisk",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maximum exposure to credit risk of financial assets designated as measured at fair value through profit or loss",
        "terseLabel": "Maximum exposure to credit risk, financial assets",
        "verboseLabel": "Credit exposure"
       }
      },
      "en": {
       "role": {
        "documentation": "The maximum exposure to the credit risk of financial assets designated as measured at fair value through profit or loss. [Refer: Credit risk [member]; Maximum exposure to credit risk]"
       }
      }
     },
     "auth_ref": [
      "r349"
     ]
    },
    "ifrs-full_MaximumExposureToLossFromInterestsInStructuredEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MaximumExposureToLossFromInterestsInStructuredEntities",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maximum exposure to loss from interests in structured entities",
        "verboseLabel": "Grupo Aval's maximum exposure"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that best represents the entity's maximum exposure to loss from its interests in structured entities. [Refer: Total for all unconsolidated structured entities [member]]"
       }
      }
     },
     "auth_ref": [
      "r223"
     ]
    },
    "aval_MaximumLegalReserveAsPercentageOfSubscriptionCapitalStock": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MaximumLegalReserveAsPercentageOfSubscriptionCapitalStock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentLegalReserveDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The percentage of subscription capital stock to calculate maximum legal reserve.",
        "label": "Maximum legal reserve as percentage of subscription capital stock",
        "terseLabel": "Maximum legal reserve as percentage of subscription capital stock"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MaximumLegalReserveAsPercentageOfSubscriptionCapitalStockReducedToStemLossesInExcessOfRetainedEarnings": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MaximumLegalReserveAsPercentageOfSubscriptionCapitalStockReducedToStemLossesInExcessOfRetainedEarnings",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentLegalReserveDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Maximum legal reserve as percentage of subscription capital stock, reduced to stem losses in excess of retained earnings",
        "label": "Maximum legal reserve as percentage of subscription capital stock, reduced to stem losses in excess of retained earnings",
        "terseLabel": "Maximum legal reserve as percentage of subscription capital stock, reduced to stem losses in excess of retained earnings"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_MeasureAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "MeasureAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measure [Axis]",
        "terseLabel": "Measure:"
       }
      }
     },
     "auth_ref": [
      "r536"
     ]
    },
    "ecd_MeasureName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "MeasureName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measure Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r536"
     ]
    },
    "aval_MeasureTradingRiskMethodMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MeasureTradingRiskMethodMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measure Trading Risk Method"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MeasurementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MeasurementAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r179",
      "r188",
      "r241"
     ]
    },
    "ifrs-full_MeasurementDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MeasurementDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of measurement. It also represents the standard value for the 'Measurement' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r179",
      "r188",
      "r241"
     ]
    },
    "aval_MegalineaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MegalineaSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Megalinea S.A. [member]",
        "label": "Megalinea SA [member]",
        "terseLabel": "Megalinea S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_MerchantBankingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MerchantBankingMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Merchant Banking [member]",
        "label": "Merchant Banking [member]",
        "terseLabel": "Merchant Banking"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MethodOfAssessmentOfExpectedCreditLossesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MethodOfAssessmentOfExpectedCreditLossesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Method of assessment of expected credit losses [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r441",
      "r444",
      "r462"
     ]
    },
    "ifrs-full_MethodOfAssessmentOfExpectedCreditLossesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MethodOfAssessmentOfExpectedCreditLossesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Method of assessment of expected credit losses [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all methods of assessment of expected credit losses. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. This member also represents the standard value for the 'Method of assessment of expected credit losses' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r441",
      "r444",
      "r462"
     ]
    },
    "ifrs-full_MethodsOfGenerationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MethodsOfGenerationAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Methods of generation [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "ifrs-full_MethodsOfGenerationDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MethodsOfGenerationDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Methods of generation [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all methods of generation. It also represents the standard value for the 'Methods of generation' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "aval_MetrexSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MetrexSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Metrex S.A.",
        "label": "Metrex S.A. [member]",
        "terseLabel": "Metrex S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_MicrocreditLoansAndReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MicrocreditLoansAndReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "aval_FinancialAssetsLoansGrossCarryingAmount",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of microcredit loans and receivables.",
        "label": "Microcredit, loans and receivables",
        "verboseLabel": "Microcredit"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MicrocreditMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MicrocreditMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Microcredit [member]",
        "label": "Microcredit [member]",
        "terseLabel": "Microcredit"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MinerosSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MinerosSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mineros S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_MinimumTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MinimumTaxRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxMinimumTaxRateDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Minimum tax rate",
        "label": "Minimum tax rate",
        "terseLabel": "Minimum tax rate (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MiningProductsAndOilMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MiningProductsAndOilMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mining products and oil"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MiscellaneousOtherOperatingExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MiscellaneousOtherOperatingExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 25.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Miscellaneous other operating expense",
        "negatedLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of miscellaneous other operating expenses. [Refer: Other operating income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_MiscellaneousOtherOperatingIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MiscellaneousOtherOperatingIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Miscellaneous other operating income",
        "verboseLabel": "Other income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of miscellaneous other operating income. [Refer: Other operating income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_MiscellaneousOtherProvisionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MiscellaneousOtherProvisionsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Miscellaneous other provisions [member]",
        "terseLabel": "Miscellaneous other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for miscellaneous other provisions. [Refer: Classes of other provisions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r160"
     ]
    },
    "ecd_MnpiDiscTimedForCompValFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "MnpiDiscTimedForCompValFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "MNPI Disclosure Timed for Compensation Value [Flag]",
        "terseLabel": "MNPI Disclosure Timed for Compensation Value"
       }
      }
     },
     "auth_ref": [
      "r556"
     ]
    },
    "aval_MonetaryEffectBetweenControllingAndNonControllingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MonetaryEffectBetweenControllingAndNonControllingInterests",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Monetary effect between controlling and non-controlling interests",
        "label": "Monetary effect between controlling and non-controlling interests",
        "terseLabel": "Effect between controlling and non-controlling interests"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MonthlyIndicatorOfEconomicActivityPercentageOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MonthlyIndicatorOfEconomicActivityPercentageOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Monthly indicator of economic activity, percentage, one-year projection.",
        "label": "Monthly Indicator of Economic Activity, Percentage, One-Year Projection",
        "terseLabel": "IMAE, percentage, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MortgageLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Mortgage loans [member]",
        "label": "Mortgage loans [member]",
        "terseLabel": "Mortgages"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MortgagesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MortgagesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMitigationOfCreditRiskCollateralAndOtherDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mortgages [member]",
        "terseLabel": "Mortgages",
        "verboseLabel": "Mortgage"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of financial assets that represents loans to finance the purchase of assets where the asset acts as collateral to secure the loan."
       }
      }
     },
     "auth_ref": [
      "r448",
      "r462",
      "r467"
     ]
    },
    "ifrs-full_MotorVehiclesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "MotorVehiclesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Motor vehicles [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing self-propelled ground vehicles used in the entity's operations. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r398"
     ]
    },
    "ecd_MtrlTermsOfTrdArrTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "MtrlTermsOfTrdArrTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Material Terms of Trading Arrangement [Text Block]",
        "terseLabel": "Material Terms of Trading Arrangement"
       }
      }
     },
     "auth_ref": [
      "r564"
     ]
    },
    "aval_MultiFinancialGroupIncMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultiFinancialGroupIncMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Multi Financial Group Inc [member]",
        "label": "Multi Financial Group Inc [member]",
        "terseLabel": "Multi Financial Group Inc"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MultiFinancialHoldingAndOtherSubsidiariesAndBranchesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultiFinancialHoldingAndOtherSubsidiariesAndBranchesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Multi financial holding and other subsidiaries and branches [member]",
        "label": "Multi financial holding and other subsidiaries and branches [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MultiFinancialHoldingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultiFinancialHoldingMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Multi Financial Holding",
        "label": "Multi Financial Holding"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MultilateralAndeanDevelopmentCorporationCorporacionAndinaDeFomentoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultilateralAndeanDevelopmentCorporationCorporacionAndinaDeFomentoMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Multilateral, Andean Development Corporation (Corporacion Andina de Fomento) [member]",
        "label": "Multilateral - Andean Development Corporation (Corporacion Andina de Fomento)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MultilateralBladexMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultilateralBladexMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Multilateral - Bladex.",
        "label": "Multilateral - Bladex (Foreign Trade Bank of Latin America)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MultilateralCountriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultilateralCountriesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Multilateral countries.",
        "label": "Multilateral Countries [Member]",
        "terseLabel": "Multilateral"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MultilateralInterAmericanCorporationForFinancingOfInfrastructureMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultilateralInterAmericanCorporationForFinancingOfInfrastructureMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Multilateral - Inter-American Corporation for the Financing of Infrastructure.",
        "label": "Multilateral - Inter-American Corporation for the Financing of Infrastructure"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MultilateralsDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MultilateralsDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Multilaterals"
       }
      }
     },
     "auth_ref": []
    },
    "aval_MutualFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "MutualFundsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mutual funds"
       }
      }
     },
     "auth_ref": []
    },
    "country_NI": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "NI",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "NICARAGUA"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NamedExecutiveOfficersFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NamedExecutiveOfficersFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Named Executive Officers, Footnote [Text Block]",
        "terseLabel": "Named Executive Officers, Footnote"
       }
      }
     },
     "auth_ref": [
      "r537"
     ]
    },
    "aval_NetDefinedBenefitLiabilityAssetAfterAdjustment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NetDefinedBenefitLiabilityAssetAfterAdjustment",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The adjusted amount of deficit or surplus in a defined benefit plan, after interest and service cost adjustment.",
        "label": "Net defined benefit liability asset After Adjustment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NetDefinedBenefitLiabilityAssetAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NetDefinedBenefitLiabilityAssetAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability (asset) [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r89"
     ]
    },
    "ifrs-full_NetDefinedBenefitLiabilityAssetDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NetDefinedBenefitLiabilityAssetDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability (asset) [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the net defined benefit liability (asset). It also represents the standard value for the 'Net defined benefit liability (asset)' axis if no other member is used. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r89"
     ]
    },
    "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements",
        "totalLabel": "Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount remaining after deducting the amounts subject to an enforceable master netting arrangement or similar agreement that were not set off against financial assets, from the net amount of financial assets subject to offsetting or subject to an enforceable master netting arrangement or similar agreement presented in the statement of financial position."
       }
      }
     },
     "auth_ref": [
      "r302"
     ]
    },
    "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position",
        "totalLabel": "Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position"
       }
      },
      "en": {
       "role": {
        "documentation": "The net amount of financial assets that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement, presented in the statement of financial position. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements",
        "totalLabel": "Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount remaining after deducting the amounts subject to an enforceable master netting arrangement or similar agreement that were not set off against financial liabilities, from the net amount of financial liabilities subject to offsetting or subject to an enforceable master netting arrangement or similar agreement presented in the statement of financial position."
       }
      }
     },
     "auth_ref": [
      "r302"
     ]
    },
    "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementOffsetOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position",
        "totalLabel": "Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position"
       }
      },
      "en": {
       "role": {
        "documentation": "The net amount of financial liabilities that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement, presented in the statement of financial position. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r301"
     ]
    },
    "us-gaap_NetIncomeLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2024",
     "localname": "NetIncomeLoss",
     "crdr": "credit",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income (Loss)",
        "terseLabel": "Net Income (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NetIncomeLossAttributableToParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NetIncomeLossAttributableToParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails": {
       "parentTag": "aval_TotalIncomeAvailableForDistribution",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails",
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.",
        "label": "Net income (loss) attributable to parent",
        "terseLabel": "Net income for the period"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NetIncomeLossFromDiscontinuedOperationsBeforeReclassificationOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NetIncomeLossFromDiscontinuedOperationsBeforeReclassificationOfOtherComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails": {
       "parentTag": "ifrs-full_ProfitLossFromDiscontinuedOperations",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net income (loss) from discontinued operations before reclassification of other comprehensive income",
        "label": "Net income (loss) from discontinued operations before reclassification of other comprehensive income",
        "totalLabel": "Net income (loss) from discontinued operations",
        "verboseLabel": "BAC Holding Corp's participation in results"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NetInvestmentInFinanceLease": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NetInvestmentInFinanceLease",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net investment in finance lease",
        "terseLabel": "Net investment",
        "verboseLabel": "Net investment in contracts of financial leasing"
       }
      },
      "en": {
       "role": {
        "documentation": "The gross investment in the finance lease discounted at the interest rate implicit in the lease. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset. Gross investment in the finance lease is the sum of: (a) the lease payments receivable by a lessor under a finance lease; and (b) any unguaranteed residual value accruing to the lessor. Interest rate implicit in the lease is the rate of interest that causes the present value of (a) the lease payments and (b) the unguaranteed residual value to equal to the sum of (i) the fair value of the underlying asset and (ii) the initial direct costs of the lessor."
       }
      }
     },
     "auth_ref": [
      "r271"
     ]
    },
    "aval_NexaBarbadosAndOtherSubsidiariesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NexaBarbadosAndOtherSubsidiariesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nexa, Barbados and other subsidiaries [member]",
        "label": "Nexa, Barbados and other subsidiaries"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NominalAmountOfHedgedItem": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NominalAmountOfHedgedItem",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The nominal amount of a hedging item.",
        "label": "Nominal Amount of Hedged Item",
        "terseLabel": "Nominal amount Hedged Item Thousands of U.S. dollar"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NominalAmountOfHedgingInstrument": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NominalAmountOfHedgingInstrument",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Nominal amount of hedging instrument",
        "terseLabel": "Notional amount",
        "verboseLabel": "Notional amount contracts forward U.S. dollars"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal amount of a hedging instrument. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r310",
      "r314"
     ]
    },
    "aval_NominalInterestRateVariationPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NominalInterestRateVariationPercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nominal interest rate variation, percentage",
        "label": "Nominal interest rate variation, percentage",
        "terseLabel": "Nominal interest rate variation"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NominalInterestRateVariationPercentageOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NominalInterestRateVariationPercentageOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nominal interest rate variation, percentage, one-year projection",
        "label": "Nominal interest rate variation, percentage, one-year projection",
        "terseLabel": "Nominal interest rate variation, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NonControllingInterestShareOfEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NonControllingInterestShareOfEquity",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Non-controlling interest share of equity.",
        "label": "Non-Controlling Interest Share of Equity",
        "terseLabel": "Non-controlling Interest share of equity"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NonGaapMeasureDescriptionTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NonGaapMeasureDescriptionTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-GAAP Measure Description [Text Block]",
        "terseLabel": "Non-GAAP Measure Description"
       }
      }
     },
     "auth_ref": [
      "r536"
     ]
    },
    "ecd_NonNeosMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NonNeosMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-NEOs [Member]",
        "terseLabel": "Non-NEOs"
       }
      }
     },
     "auth_ref": [
      "r499",
      "r510",
      "r520",
      "r544",
      "r553"
     ]
    },
    "ecd_NonPeoNeoAvgCompActuallyPaidAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NonPeoNeoAvgCompActuallyPaidAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO Average Compensation Actually Paid Amount",
        "terseLabel": "Non-PEO NEO Average Compensation Actually Paid Amount"
       }
      }
     },
     "auth_ref": [
      "r527"
     ]
    },
    "ecd_NonPeoNeoAvgTotalCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NonPeoNeoAvgTotalCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO Average Total Compensation Amount",
        "terseLabel": "Non-PEO NEO Average Total Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r526"
     ]
    },
    "ecd_NonPeoNeoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NonPeoNeoMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO [Member]",
        "terseLabel": "Non-PEO NEO"
       }
      }
     },
     "auth_ref": [
      "r544"
     ]
    },
    "ecd_NonRule10b51ArrAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NonRule10b51ArrAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-Rule 10b5-1 Arrangement Adopted [Flag]",
        "terseLabel": "Non-Rule 10b5-1 Arrangement Adopted"
       }
      }
     },
     "auth_ref": [
      "r564"
     ]
    },
    "ecd_NonRule10b51ArrTrmntdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "NonRule10b51ArrTrmntdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-Rule 10b5-1 Arrangement Terminated [Flag]",
        "terseLabel": "Non-Rule 10b5-1 Arrangement Terminated"
       }
      }
     },
     "auth_ref": [
      "r564"
     ]
    },
    "ifrs-full_NoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NoncontrollingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-controlling interests",
        "terseLabel": "Non-controlling interests",
        "verboseLabel": "Non-controlling interests"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r25",
      "r210",
      "r214"
     ]
    },
    "ifrs-full_NoncontrollingInterestsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NoncontrollingInterestsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-controlling interests [member]",
        "terseLabel": "Non-controlling interest (NCI)"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity in a subsidiary not attributable, directly or indirectly, to the parent."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    },
    "aval_NoncontrollingInterestsOwnershipInterestsSharesAcquired": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NoncontrollingInterestsOwnershipInterestsSharesAcquired",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Non-controlling interests, ownership interests, shares acquired",
        "label": "Noncontrolling interests, ownership interests, shares acquired",
        "terseLabel": "Non-controlling interests, ownership interests, shares acquired (in shares)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NoncurrentAssetsHeldForSaleMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NoncurrentAssetsHeldForSaleMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current assets held for sale [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for non-current assets that are available for immediate sale in their present condition, subject only to terms that are usual and customary for sales of such assets, and for which sale is highly probable. [Refer: Non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r423",
      "r426",
      "r627"
     ]
    },
    "ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current assets or disposal groups classified as held for sale",
        "periodEndLabel": "Balance at year end balance",
        "periodStartLabel": "Balance at the beginning of the year",
        "terseLabel": "Non-current assets held for sale",
        "verboseLabel": "Non-current assets held for sale"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current assets or disposal groups classified as held for sale. [Refer: Disposal groups classified as held for sale [member]]"
       }
      }
     },
     "auth_ref": [
      "r298"
     ]
    },
    "ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NoncurrentPortionOfNoncurrentBondsIssued",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current portion of non-current bonds issued",
        "terseLabel": "The amount of issued bonds due over 12 months"
       }
      },
      "en": {
       "role": {
        "documentation": "The non-current portion of non-current bonds issued. [Refer: Bonds issued]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_NonfinancialAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NonfinancialAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Non-financial assets [member]",
        "label": "Non-financial assets [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NoninterestMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NoninterestMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-interest [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NonrecurringFairValueMeasurementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NonrecurringFairValueMeasurementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsAtFairValueOnNonRecurringBasisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-recurring fair value measurement [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for fair value measurements which other IFRSs require or permit in the statement of financial position in particular circumstances. [Refer: IFRSs [member]]"
       }
      }
     },
     "auth_ref": [
      "r241"
     ]
    },
    "aval_NontaxableDividends": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NontaxableDividends",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nontaxable dividends",
        "label": "Nontaxable dividends",
        "negatedLabel": "Nontaxable dividends"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NontaxableIncomeUnderEquityMethodInAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NontaxableIncomeUnderEquityMethodInAssociates",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nontaxable income under equity method in associates",
        "label": "Nontaxable income under equity method in associates",
        "negatedLabel": "Nontaxable income under equity method in associates"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NontaxableInterestIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NontaxableInterestIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nontaxable interest income",
        "label": "Nontaxable interest income",
        "negatedLabel": "Nontaxable interest income and other income"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NotInternallyGeneratedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NotInternallyGeneratedMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not internally generated [member]",
        "terseLabel": "Separate acquisition"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for items that have not been internally generated by the entity."
       }
      }
     },
     "auth_ref": [
      "r172"
     ]
    },
    "ifrs-full_NotLaterThanOneMonthMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NotLaterThanOneMonthMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not later than one month [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of not later than one month."
       }
      }
     },
     "auth_ref": [
      "r449",
      "r455",
      "r465"
     ]
    },
    "ifrs-full_NotLaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NotLaterThanOneYearMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesCurrentTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioContractsReceivableDetails",
      "http://www.grupoaval.com/role/DisclosureLoansLoanPortfolioByMaturityDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not later than one year [member]",
        "terseLabel": "Up to 1 year",
        "verboseLabel": "Not later than One Year"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of not later than one year."
       }
      }
     },
     "auth_ref": [
      "r29",
      "r271",
      "r273",
      "r282",
      "r453",
      "r465"
     ]
    },
    "ifrs-full_NotionalAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NotionalAmount",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsHedgingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Notional amount",
        "terseLabel": "Notional amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal or face amount of a financial instrument, used to calculate payments made on that instrument."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_NotionalAmountOfHedgingInstrument": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NotionalAmountOfHedgingInstrument",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Notional Amount of hedging instrument.",
        "label": "Notional Amount Of Hedging Instrument",
        "terseLabel": "Notional amount contracts interest rate Swaps (IRS) COP"
       }
      }
     },
     "auth_ref": []
    },
    "aval_NumberOfContracts": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "NumberOfContracts",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of contracts taken by the entity at a date.",
        "label": "Number of contracts",
        "verboseLabel": "# of contracts"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NumberOfSharesAuthorised": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NumberOfSharesAuthorised",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAuthorizedAndSubscribedSharesDetails": {
       "parentTag": "ifrs-full_NumberOfSharesOutstanding",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAuthorizedAndSubscribedSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares authorised",
        "verboseLabel": "Authorized shares (in shares)"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares authorised."
       }
      }
     },
     "auth_ref": [
      "r35"
     ]
    },
    "ifrs-full_NumberOfSharesIssued": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NumberOfSharesIssued",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares issued",
        "terseLabel": "Number shares sold"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares issued by the entity."
       }
      }
     },
     "auth_ref": [
      "r588"
     ]
    },
    "ifrs-full_NumberOfSharesIssuedAndFullyPaid": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NumberOfSharesIssuedAndFullyPaid",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAuthorizedAndSubscribedSharesDetails": {
       "parentTag": "ifrs-full_NumberOfSharesOutstanding",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAuthorizedAndSubscribedSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares issued and fully paid",
        "verboseLabel": "Subscribed fully paid shares (in shares)"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares issued by the entity, for which full payment has been received."
       }
      }
     },
     "auth_ref": [
      "r36"
     ]
    },
    "ifrs-full_NumberOfSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NumberOfSharesOutstanding",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAuthorizedAndSubscribedSharesDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAuthorizedAndSubscribedSharesDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentDeclaredDividendsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares outstanding",
        "netLabel": "Number of shares outstanding",
        "totalLabel": "Total outstanding shares (in shares)",
        "verboseLabel": "Total shares outstanding"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]"
       }
      }
     },
     "auth_ref": [
      "r38"
     ]
    },
    "ifrs-full_NumberOfSharesRepresentedByOneDepositaryReceipt": {
     "xbrltype": "pureItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "NumberOfSharesRepresentedByOneDepositaryReceipt",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares represented by one depositary receipt",
        "terseLabel": "Number of shares represented by one depositary receipt"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares represented by one depositary receipt."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_OccasionalReserveAmountToReserveAtDisposalOfShareholderMeeting": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OccasionalReserveAmountToReserveAtDisposalOfShareholderMeeting",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Occasional reserve, amount to reserve at disposal of shareholder meeting",
        "label": "Occasional reserve, amount to reserve at disposal of shareholder meeting",
        "terseLabel": "To Occasional reserve at the disposal of General Meeting of Shareholders"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OccasionalReserveReleasedForDistribution": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OccasionalReserveReleasedForDistribution",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails": {
       "parentTag": "aval_TotalIncomeAvailableForDistribution",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of occasional reserve released to the shareholders for distribution.",
        "label": "Occasional reserve released for distribution",
        "terseLabel": "Occasional reserve release at the disposal of the General Meeting of Shareholders"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OccidentalBankBarbadosLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OccidentalBankBarbadosLtdMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Occidental Bank Barbados Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OfficeEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OfficeEquipmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Office equipment [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing equipment used to support office functions, not specifically used in the production process. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r399"
     ]
    },
    "aval_OfficesNetworkServicesExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OfficesNetworkServicesExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionExpense",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Offices network services expenses",
        "label": "Offices network services expenses",
        "negatedLabel": "Offices network services"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OperatingExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OperatingExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating expense",
        "negatedLabel": "Operating expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of all operating expenses."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "aval_OperatingExpenseOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OperatingExpenseOther",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Operating expense, other",
        "label": "Operating expense, other",
        "negatedLabel": "Other operating expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OperatingIncomeOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OperatingIncomeOther",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Operating income, other",
        "label": "Operating income, other",
        "terseLabel": "Other operating income"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OperatingLeaseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OperatingLeaseIncome",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating lease income",
        "verboseLabel": "Leases"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of operating lease income. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset."
       }
      }
     },
     "auth_ref": [
      "r269"
     ]
    },
    "ifrs-full_OperatingSegmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OperatingSegmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating segments [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for operating segments. An operating segment is a component of an entity: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same entity); (b) whose operating results are regularly reviewed by the entity\u2019s chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance; and (c) for which discrete financial information is available. [Refer: Revenue]"
       }
      }
     },
     "auth_ref": [
      "r371"
     ]
    },
    "aval_OperationalRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OperationalRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount Operational risk",
        "label": "Operational Risk"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OperationalRiskExposure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OperationalRiskExposure",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Operational risk exposure.",
        "label": "Operational Risk Exposure",
        "terseLabel": "Operational risk exposure"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OptionContractForeignCurrencyToBuyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OptionContractForeignCurrencyToBuyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to options contracts, foreign currency to buy.",
        "label": "Options Contracts, Foreign currency to buy"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OptionContractForeignCurrencyToSellMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OptionContractForeignCurrencyToSellMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to options contracts, foreign currency to sell.",
        "label": "Options Contracts, Foreign currency to sell"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OptionContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OptionContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Option contract [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a derivative financial instrument that gives the holder the right, but not the obligation, to purchase or sell an underlying asset for a specified price determined in advance. [Refer: Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_OrdinarySharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OrdinarySharesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ordinary shares [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity instruments that are subordinate to all other classes of equity instruments."
       }
      }
     },
     "auth_ref": [
      "r595"
     ]
    },
    "aval_OtherAccountReceivablesDebtors": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountReceivablesDebtors",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other account receivables, debtors",
        "label": "Other account receivables, debtors",
        "terseLabel": "Debtors"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsPayableMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsPayableMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts payable [member]",
        "label": "Other accounts payable [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableAtAmortizedCostExceptPrepaidExpensesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableAtAmortizedCostExceptPrepaidExpensesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for arrangements in other accounts receivable at amortized cost except prepaid expenses.",
        "label": "Other Accounts Receivable At Amortized Cost Except Prepaid Expenses [Member]",
        "terseLabel": "Other accounts receivable"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableAtAmortizedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableAtAmortizedCostMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable at amortized cost [member]",
        "label": "Other accounts receivable at amortized cost [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueAndAtAmortizedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueAndAtAmortizedCostMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable at fair value through profit or loss, mandatorily measured at fair value, and at amortized cost [member]",
        "label": "Other accounts receivable at fair value through profit or loss, mandatorily measured at fair value, and at amortized cost [member]",
        "terseLabel": "Other accounts receivable at fair value through profit or loss, mandatorily measured at fair value, and at amortized cost"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable at fair value through profit or loss, mandatorily measured at fair value [member]",
        "label": "Other accounts receivable at fair value through profit or loss, mandatorily measured at fair value [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach [member]",
        "label": "Other accounts receivable, general approach"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesAndContractAssetsForGovernmentAndCorporateCustomersCorporateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesAndContractAssetsForGovernmentAndCorporateCustomersCorporateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables and contract assets for government and corporate customers, corporate [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables and contract assets for government and corporate customers, corporate [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesAndContractAssetsForGovernmentAndCorporateCustomersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesAndContractAssetsForGovernmentAndCorporateCustomersMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables and contract assets for government and corporate customers [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables and contract assets for government and corporate customers [member]",
        "terseLabel": "Other accounts receivable, general approach, other accounts receivables and contract assets for government and corporate customers"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesAndContractAssetsForGovernmentAndCorporateCustomersSovereignMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesAndContractAssetsForGovernmentAndCorporateCustomersSovereignMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables and contract assets for government and corporate customers, sovereign [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables and contract assets for government and corporate customers, sovereign [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToContributionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToContributionsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables related to contributions [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables related to contributions [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToEnergyServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToEnergyServicesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables related to energy services [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables related to energy services [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToGasEnergyServicesContributionsAndOthersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToGasEnergyServicesContributionsAndOthersMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables related to gas, energy services, contributions and others [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables related to gas, energy services, contributions and others"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToGasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToGasMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables related to gas [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables related to gas [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToOthersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableGeneralApproachOtherAccountsReceivablesRelatedToOthersMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, general approach, other accounts receivables related to others [member]",
        "label": "Other accounts receivable, general approach, other accounts receivables related to others [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable.",
        "label": "Other Accounts Receivable [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivableSimplifiedApproachMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivableSimplifiedApproachMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other accounts receivable, simplified approach [member]",
        "label": "Other accounts receivable, simplified approach"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivablesGross": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivablesGross",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesNet",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The gross amount of other accounts receivables.",
        "label": "Other Accounts Receivables Gross",
        "totalLabel": "Gross balance of other accounts receivable"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAccountsReceivablesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAccountsReceivablesNet",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of other account receivables net.",
        "label": "Other Accounts Receivables Net",
        "totalLabel": "Other accounts receivable, net"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherAdditionsDeductionsToTierOneCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAdditionsDeductionsToTierOneCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TierTwoSecondaryCapital",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other additions (deductions) to Tier one capital",
        "label": "Other additions (deductions) to tier one capital",
        "terseLabel": "Plus/minus others"
       }
      }
     },
     "auth_ref": []
    },
    "dei_OtherAddressMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "OtherAddressMember",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Address [Member]",
        "documentation": "Other address for entity"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherAdjustmentsForNoncashItems": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherAdjustmentsForNoncashItems",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other adjustments for non-cash items",
        "terseLabel": "Other changes"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for non-cash items to reconcile profit (loss) to net cash flow from (used in) operating activities that the entity does not separately disclose in the same statement or note. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r621"
     ]
    },
    "ifrs-full_OtherAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other assets",
        "verboseLabel": "Other assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "ifrs-full_OtherAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other assets [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for assets that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r432"
     ]
    },
    "aval_OtherAssetsTotal": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherAssetsTotal",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of assets that the entity does not separately disclose in the same statement or note.",
        "label": "Other Assets Total",
        "terseLabel": "Other assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherCashPaymentsToAcquireInterestsInJointVenturesClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherCashPaymentsToAcquireInterestsInJointVenturesClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other cash payments to acquire interests in joint ventures, classified as investing activities",
        "negatedLabel": "Acquisition of investments in associates"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow to acquire interests in joint ventures (other than payments for those instruments considered to be cash equivalents or those held for dealing or trading purposes), classified as investing activities. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r415"
     ]
    },
    "aval_OtherCashReceivedToSaleInterestsInAssociatesAndJointVenturesClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherCashReceivedToSaleInterestsInAssociatesAndJointVenturesClassifiedAsInvestingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow to sale interests in associates and joint ventures (other than payments for those instruments considered to be cash equivalents or those held for dealing or trading purposes), classified as investing activities.",
        "label": "Other cash received to sale interests in associates and joint ventures, classified as investing activities",
        "negatedLabel": "Proceeds from sale of investments in associates"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherCommitmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Commitments"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income",
        "terseLabel": "Other comprehensive income",
        "totalLabel": "Other comprehensive income, net of taxes",
        "verboseLabel": "Participation in Other Comprehensive Income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income and expense (including reclassification adjustments) that is not recognised in profit or loss as required or permitted by IFRSs. [Refer: IFRSs [member]]"
       }
      }
     },
     "auth_ref": [
      "r3",
      "r43",
      "r56",
      "r228"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax",
        "totalLabel": "Total other comprehensive income, before tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, before tax. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r57"
     ]
    },
    "aval_OtherComprehensiveIncomeBeforeTaxCumulativeTranslationAdjustmentOfInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeBeforeTaxCumulativeTranslationAdjustmentOfInvestments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other Comprehensive Income Before Tax Cumulative Translation Adjustment of Investments",
        "label": "Other Comprehensive Income Before Tax, Cumulative Translation Adjustment of Investments",
        "terseLabel": "Other Comprehensive Income, cumulative translation adjustment of the investments",
        "verboseLabel": "Cumulative translation adjustment of the investments"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax, gains (losses) from investments in equity instruments",
        "terseLabel": "Unrealized gains (losses) on equity securities at FVOCI",
        "verboseLabel": "Unrealized gains (losses) on equity financial securities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, before tax, related to gains (losses) from changes in the fair value of investments in equity instruments that the entity has designated at fair value through other comprehensive income applying paragraph 5.7.5 of IFRS 9. [Refer: Other comprehensive income, before tax]"
       }
      }
     },
     "auth_ref": [
      "r32",
      "r57",
      "r305"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans",
        "terseLabel": "Actuarial (losses) gains from defined benefit pension plans",
        "verboseLabel": "Actuarial gains (losses) from defined benefit pension plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, before tax, related to gains (losses) on remeasurements of defined benefit plans, which comprise actuarial gains and losses; the return on plan assets, excluding amounts included in net interest on the net defined benefit liability (asset); and any change in the effect of the asset ceiling, excluding amounts included in net interest on the net defined benefit liability (asset). [Refer: Other comprehensive income; Defined benefit plans [domain]; Plan assets [member]; Net defined benefit liability (asset)] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r32",
      "r57",
      "r604"
     ]
    },
    "aval_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluationOfTangibleAssetsAndTransferFromOwnerOccupiedPropertyToInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluationOfTangibleAssetsAndTransferFromOwnerOccupiedPropertyToInvestmentProperty",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income, before tax, gains (losses) on revaluation of tangible assets and transfer from owner-occupied property to investment property",
        "label": "Other comprehensive income, before tax, gains (losses) on revaluation of tangible assets and transfer from owner-occupied property to investment property",
        "terseLabel": "Transfer from owner-occupied property to investment property"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherComprehensiveIncomeBeforeTaxGainsLossesOnTransferFromOwnerOccupiedPropertyToInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeBeforeTaxGainsLossesOnTransferFromOwnerOccupiedPropertyToInvestmentProperty",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income, before tax, gains (losses) on transfer from owner-occupied property to investment property",
        "label": "Other comprehensive income, before tax, gains (losses) on transfer from owner-occupied property to investment property",
        "terseLabel": "Transfer from owner-occupied property to investment property"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability",
        "terseLabel": "Changes in the fair value FwD - financial obligations"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, related to changes in the fair value of financial liabilities attributable to the changes in the credit risk of those liabilities. [Refer: Other comprehensive income; Credit risk [member]; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r32",
      "r56"
     ]
    },
    "aval_OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfInterestRateSwapContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfInterestRateSwapContracts",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, related to change in value of interest rate swap contract.",
        "label": "Other comprehensive income, net of tax, change in Fair Value of Interest Rate Swap Contracts",
        "terseLabel": "Changes in the fair value Interest Rate Swaps (IRS)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxChangeInValueOfForwardElementsOfForwardContractsThatHedgeTransactionRelatedHedgedItems": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxChangeInValueOfForwardElementsOfForwardContractsThatHedgeTransactionRelatedHedgedItems",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, net of tax, change in value of forward elements of forward contracts that hedge transaction related hedged items",
        "verboseLabel": "Changes in the fair value FwD - Future transactions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, related to change in value of forward elements of forward contracts that hedge transaction related hedged items. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r322"
     ]
    },
    "aval_OtherComprehensiveIncomeNetOfTaxChangeInValueOfOtherAccountsReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeNetOfTaxChangeInValueOfOtherAccountsReceivable",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income, net of tax, change in value of other accounts receivable.",
        "label": "Other Comprehensive Income, net of Tax, Change in Value of Other Accounts Receivable",
        "terseLabel": "Changes in the fair value other accounts receivable"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, net of tax, gains (losses) from investments in equity instruments",
        "terseLabel": "Unrealized gains (losses) on equity financial securities",
        "verboseLabel": "Changes in the fair value bonds"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, related to gains (losses) from changes in the fair value of investments in equity instruments that the entity has designated at fair value through other comprehensive income applying paragraph 5.7.5 of IFRS 9. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r32",
      "r56"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans",
        "terseLabel": "Actuarial gains (losses) from defined benefit pension plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, related to gains (losses) on remeasurements of defined benefit plans, which comprise actuarial gains and losses; the return on plan assets, excluding amounts included in net interest on the net defined benefit liability (asset); and any change in the effect of the asset ceiling, excluding amounts included in net interest on the net defined benefit liability (asset). [Refer: Other comprehensive income; Defined benefit plans [domain]; Plan assets [member]; Net defined benefit liability (asset)] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r32",
      "r56",
      "r604"
     ]
    },
    "aval_OtherComprehensiveIncomeNetOfTaxGainsLossesOnTransferFromOwnerOccupiedPropertyToInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeNetOfTaxGainsLossesOnTransferFromOwnerOccupiedPropertyToInvestmentProperty",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income, net of tax, gains (losses) on transfer from owner-occupied property to investment property",
        "label": "Other comprehensive income, net of tax, gains (losses) on transfer from owner-occupied property to investment property",
        "terseLabel": "Transfer from owner-occupied property to investment property"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherComprehensiveIncomeReclassificationAdjustment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeReclassificationAdjustment",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income reclassification for adjustment.",
        "label": "Other comprehensive income reclassification adjustment",
        "terseLabel": "Reclassified to profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeBeforeTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income that will be reclassified to profit or loss, before tax",
        "totalLabel": "Total other comprehensive income that will be reclassified to profit or loss, before tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income that will be reclassified to profit or loss, before tax. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r596",
      "r598"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails": {
       "parentTag": "ifrs-full_ProfitLossFromDiscontinuedOperations",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income that will be reclassified to profit or loss, net of tax",
        "negatedLabel": "Effect of realization OCI to income",
        "terseLabel": "Net reclassifications of Other Comprehensive Income",
        "totalLabel": "Total other comprehensive income that will be reclassified to profit or loss, net of tax",
        "verboseLabel": "Effect of realization OCI to income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income that will be reclassified to profit or loss, net of tax. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r391",
      "r392"
     ]
    },
    "aval_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAttributableToNonControllingInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAttributableToNonControllingInterest",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other Comprehensive Income that will be Reclassified to Profit or Loss Net of Tax Attributable to Non-controlling Interest",
        "label": "Other Comprehensive Income that will be Reclassified to Profit or Loss, Net of Tax, Attributable to Non-controlling Interest",
        "terseLabel": "Attributable to non-controlling interest",
        "verboseLabel": "Total reclassifications of Other Comprehensive Income to profit or loss - Attributable to non-controlling interest"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAttributableToParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAttributableToParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other Comprehensive Income that will be Reclassified to Profit or Loss Net of Tax Attributable to Parent",
        "label": "Other Comprehensive Income that will be Reclassified to Profit or Loss, Net of Tax, Attributable to Parent",
        "terseLabel": "Attributable to owners of the parent",
        "verboseLabel": "Total other comprehensive income that will be reclassified to profit or loss, net of tax - Attributable to owners of the parent"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarnings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarnings",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income that will be reclassified to retained earnings",
        "label": "Other comprehensive income that will be reclassified to retained earnings",
        "totalLabel": "Total reclassifications of Other Comprehensive Income to retained earnings"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarningsAttributableToNoncontrollingInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarningsAttributableToNoncontrollingInterest",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails": {
       "parentTag": "aval_OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarnings",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income that will be reclassified to retained earnings attributable to noncontrolling interest",
        "label": "Other comprehensive income that will be reclassified to retained earnings attributable to noncontrolling interest",
        "terseLabel": "Total reclassifications of Other Comprehensive Income to retained earnings - Attributable to non-controlling interest"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarningsAttributableToParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarningsAttributableToParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails": {
       "parentTag": "aval_OtherComprehensiveIncomeThatWillBeReclassifiedToRetainedEarnings",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other comprehensive income that will be reclassified to retained earnings attributable to parent",
        "label": "Other comprehensive income that will be reclassified to retained earnings, attributable to parent",
        "terseLabel": "Total reclassifications of Other Comprehensive Income to retained earnings - Attributable to owners of the parent"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeBeforeTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income that will not be reclassified to profit or loss, before tax",
        "totalLabel": "Total other comprehensive income that will not be reclassified to profit or loss, before tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income that will not be reclassified to profit or loss, before tax. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r596",
      "r598"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income that will not be reclassified to profit or loss, net of tax",
        "totalLabel": "Total other comprehensive income that will not be reclassified to profit or loss, net of tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income that will not be reclassified to profit or loss, net of tax. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r391",
      "r392"
     ]
    },
    "aval_OtherCountriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherCountriesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other countries"
       }
      }
     },
     "auth_ref": []
    },
    "srt_OtherCurrencyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "OtherCurrencyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Currency [Member]",
        "terseLabel": "Other Currency"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherCurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherCurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesClassificationDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesClassificationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other current liabilities",
        "terseLabel": "Liabilities to be canceled within twelve months"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_OtherDeductionsFromRegulatoryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherDeductionsFromRegulatoryCapital",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other Deductions from regulatory capital",
        "label": "Other deductions from regulatory capital",
        "negatedLabel": "Other"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherDeductionsFromTechnicalCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherDeductionsFromTechnicalCapital",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TechnicalRegulatoryCapital",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other deductions from technical capital",
        "label": "Other deductions from technical capital"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherDepositsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherDepositsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other deposits [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherExpenseByNature": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherExpenseByNature",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": -1.0,
       "order": 7.0
      },
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other expenses, by nature",
        "negatedLabel": "Other expenses",
        "negatedTotalLabel": "Total other expense"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of expenses. [Refer: Expenses, by nature]"
       }
      }
     },
     "auth_ref": [
      "r63",
      "r386"
     ]
    },
    "ifrs-full_OtherFeeAndCommissionExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherFeeAndCommissionExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionExpense",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other fee and commission expense",
        "negatedLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of fee and commission expense that the entity does not separately disclose in the same statement or note. [Refer: Fee and commission expense]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_OtherFeeAndCommissionIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherFeeAndCommissionIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other fee and commission income",
        "terseLabel": "Other commissions",
        "verboseLabel": "Other commissions and fees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of fee and commission income that the entity does not separately disclose in the same statement or note. [Refer: Fee and commission income]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_OtherFinanceIncomeCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherFinanceIncomeCost",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other finance income (cost)",
        "terseLabel": "Other income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of finance income or cost that the entity does not separately disclose in the same statement or note. [Refer: Finance income (cost)]"
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "aval_OtherFinanceIncomeCostIncludingIncomeFromFinancialInstrumentsDesignatedAtFairValueNetAndTradingIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherFinanceIncomeCostIncludingIncomeFromFinancialInstrumentsDesignatedAtFairValueNetAndTradingIncomeExpense",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other finance income (cost), including income from financial instruments designated at fair value, net and trading income (expense)",
        "label": "Other finance income (cost), including income from financial instruments designated at fair value, net and trading income (expense)",
        "terseLabel": "Other income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherFinancialAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherFinancialAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other financial assets [member]",
        "label": "Other financial assets [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherFinancialLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other financial liabilities",
        "terseLabel": "Other financial obligations"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r21"
     ]
    },
    "aval_OtherFinancialLiabilitiesHedgeNetForeignInvestment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherFinancialLiabilitiesHedgeNetForeignInvestment",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other financial liabilities, hedge net foreign investment",
        "label": "Other financial liabilities, hedge net foreign investment",
        "terseLabel": "Other financial liabilities, hedge net foreign investment"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherFinancialLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherFinancialLiabilitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other financial liabilities [member]",
        "label": "Other financial liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherIncome",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other income",
        "terseLabel": "Other income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of operating income that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r121",
      "r386",
      "r387"
     ]
    },
    "aval_OtherIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherIncomeExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other income (expense)",
        "label": "Other income (expense)",
        "negatedLabel": "Other expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherIncomeNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherIncomeNet",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 6.0
      },
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other income, net",
        "label": "Other income, net",
        "terseLabel": "Other income",
        "totalLabel": "Total other income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherIndustrialAndManufacturingProductsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherIndustrialAndManufacturingProductsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other industrial and manufacturing products"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherIntangibleAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherIntangibleAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_IntangibleAssetsAndGoodwill",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other intangible assets",
        "terseLabel": "Other intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of intangible assets that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r614"
     ]
    },
    "ifrs-full_OtherIntangibleAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherIntangibleAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other intangible assets [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r614"
     ]
    },
    "ifrs-full_OtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 8.0
      },
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesClassificationDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesClassificationDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other liabilities",
        "terseLabel": "Other liabilities",
        "totalLabel": "Total other liabilities",
        "verboseLabel": "Other liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_OtherLiabilitiesOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherLiabilitiesOther",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other liabilities, other",
        "label": "Other liabilities, other",
        "terseLabel": "Other liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherLiabilitiesTotal": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherLiabilitiesTotal",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of liabilities that the entity does not separately disclose in the same statement or note.",
        "label": "Other liabilities Total",
        "terseLabel": "Other liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherMovablePropertyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherMovablePropertyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other movable property [member]",
        "label": "Other movable property [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherNoncurrentAssetsHeldForSaleMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherNoncurrentAssetsHeldForSaleMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other noncurrent assets held for sale [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherNoncurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherNoncurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesClassificationDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesClassificationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other non-current liabilities",
        "terseLabel": "Liabilities to be canceled after twelve months"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Non-current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_OtherNontaxableInterestIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherNontaxableInterestIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "It represents other non taxable interest income .",
        "label": "Other Nontaxable Interest Income",
        "negatedLabel": "Other nontaxable income"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_OtherPerfMeasureAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "OtherPerfMeasureAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Performance Measure, Amount",
        "terseLabel": "Other Performance Measure, Amount"
       }
      }
     },
     "auth_ref": [
      "r536"
     ]
    },
    "ifrs-full_OtherPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherPropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other property, plant and equipment",
        "verboseLabel": "Property, plant and equipment for own-use and given in operating lease"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of property, plant and equipment that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r601"
     ]
    },
    "ifrs-full_OtherPropertyPlantAndEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherPropertyPlantAndEquipmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other property, plant and equipment [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing property, plant and equipment that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r601"
     ]
    },
    "ifrs-full_OtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherProvisions",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Provisions",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other provisions",
        "terseLabel": "Non legal related"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of provisions other than provisions for employee benefits. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r33",
      "r156"
     ]
    },
    "aval_OtherPublicEntitiesDebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherPublicEntitiesDebtSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Public Entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OtherRealEstateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherRealEstateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other real estate [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other receivables",
        "verboseLabel": "Other accounts receivable, net"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount receivable by the entity that it does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r389"
     ]
    },
    "aval_OtherReserveTaxWithholding": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherReserveTaxWithholding",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails": {
       "parentTag": "ifrs-full_RetainedEarnings",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A component of equity representing withholding tax.",
        "label": "Other Reserve Tax Withholding",
        "negatedLabel": "Accumulated withholding tax over dividends"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherReserves",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails": {
       "parentTag": "ifrs-full_RetainedEarnings",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other reserves",
        "terseLabel": "Retained earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing reserves within equity, not including retained earnings. [Refer: Retained earnings]"
       }
      }
     },
     "auth_ref": [
      "r390"
     ]
    },
    "aval_OtherSubsidiariesAndBranchesBancoDeBogotaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherSubsidiariesAndBranchesBancoDeBogotaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other subsidiaries and branches Banco de Bogota",
        "terseLabel": "Other subsidiaries and branches Banco de Bogot"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other tax effects for reconciliation between accounting profit and tax expense (income)",
        "terseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate]"
       }
      }
     },
     "auth_ref": [
      "r69"
     ]
    },
    "aval_OtherTierOneCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OtherTierOneCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_AdditionalTierOneCapital",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other tier one capital",
        "label": "Other tier one capital",
        "terseLabel": "Other"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherTradingIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "OtherTradingIncomeExpense",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other trading income (expense)",
        "verboseLabel": "Net other trading (loss) income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of trading income (expense) that the entity does not separately disclose in the same statement or note. [Refer: Trading income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_Others": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Others",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of other receivables.",
        "label": "Others"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OthersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OthersMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Others [member]",
        "label": "Others [member]",
        "verboseLabel": "Others"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OthersServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OthersServicesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Others services [member]",
        "label": "Others services [member]",
        "terseLabel": "Other services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OutsourcingServicesExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OutsourcingServicesExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses towards outsourcing services.",
        "label": "Outsourcing services expenses",
        "negatedLabel": "Outsourcing services"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_OutstandingAggtErrCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "OutstandingAggtErrCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Aggregate Erroneous Compensation Amount",
        "terseLabel": "Outstanding Aggregate Erroneous Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r497",
      "r508",
      "r518",
      "r551"
     ]
    },
    "ecd_OutstandingRecoveryCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "OutstandingRecoveryCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Recovery Compensation Amount",
        "terseLabel": "Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r500",
      "r511",
      "r521",
      "r554"
     ]
    },
    "ecd_OutstandingRecoveryIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "OutstandingRecoveryIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Recovery, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r500",
      "r511",
      "r521",
      "r554"
     ]
    },
    "aval_OverdraftFacilityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OverdraftFacilityMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Overdraft facility [member]",
        "label": "Overdraft facility [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OverdraftsInBankCheckingAccount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OverdraftsInBankCheckingAccount",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsBorrowingsFromBanksAndOthersTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Overdrafts in bank checking account",
        "label": "Overdrafts in bank checking account",
        "terseLabel": "Overdrafts in bank checking account"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OverdraftsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OverdraftsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Overdrafts [member]",
        "terseLabel": "Overdrafts"
       }
      }
     },
     "auth_ref": []
    },
    "aval_OvernightFunds": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "OvernightFunds",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": "aval_InterbankFunds",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of overnight funds.",
        "label": "Overnight Funds",
        "verboseLabel": "Overnight funds"
       }
      }
     },
     "auth_ref": []
    },
    "country_PA": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "PA",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PANAMA"
       }
      }
     },
     "auth_ref": []
    },
    "country_PE": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "PE",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PERU"
       }
      }
     },
     "auth_ref": []
    },
    "country_PY": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "PY",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PARAGUAY"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ParValuePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ParValuePerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Par value per share",
        "terseLabel": "Nominal value per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal value per share."
       }
      }
     },
     "auth_ref": [
      "r37"
     ]
    },
    "aval_ParallelDownwardShockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ParallelDownwardShockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for parallel downward shock, where there is a parallel downward shift of the yield curve with the same negative interest rate shock for all maturities.",
        "label": "Parallel Downward Shock [Member]",
        "terseLabel": "Parallel downward shock"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ParallelUpwardShockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ParallelUpwardShockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for parallel upward shock, where there is a parallel upward shift of the yield curve with the same positive interest rate shock for all maturities.",
        "label": "Parallel Upward Shock [Member]",
        "terseLabel": "Parallel upward shock"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ParentCompanyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "ParentCompanyMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Parent Company [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PastDueStatusAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PastDueStatusAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Past due status [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r446"
     ]
    },
    "ifrs-full_PastDueStatusDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PastDueStatusDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Past due status [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all past-due statuses. It also represents the standard value for the 'Past due status' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r446"
     ]
    },
    "ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PastServiceCostNetDefinedBenefitLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in net defined benefit liability (asset) resulting from past service cost",
        "verboseLabel": "Past Service Costs"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the net defined benefit liability (asset) resulting from past service cost. Past service cost is the change in the present value of the defined benefit obligation for employee service in prior periods, resulting from a plan amendment (the introduction or withdrawal of, or changes to, a defined benefit plan) or a curtailment (a significant reduction by the entity in the number of employees covered by a plan). [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r96"
     ]
    },
    "ecd_PayVsPerformanceDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PayVsPerformanceDisclosureLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance Disclosure [Line Items]",
        "terseLabel": "Pay vs Performance Disclosure"
       }
      }
     },
     "auth_ref": [
      "r525"
     ]
    },
    "ifrs-full_PayablesOnSocialSecurityAndTaxesOtherThanIncomeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PayablesOnSocialSecurityAndTaxesOtherThanIncomeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payables on social security and taxes other than income tax",
        "verboseLabel": "Withholdings taxes and labor contributions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of payment due on social security and taxes other than income tax. Income taxes include all domestic and foreign taxes that are based on taxable profits. Income taxes also include taxes, such as withholding taxes, that are payable by a subsidiary, associate or joint arrangement on distributions to the reporting entity."
       }
      }
     },
     "auth_ref": [
      "r594"
     ]
    },
    "aval_PaymentsForProceedsFromEquityTransactionsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PaymentsForProceedsFromEquityTransactionsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Payments for (proceeds from) equity transactions, financing activities",
        "label": "Payments for (proceeds from) equity transactions, financing activities",
        "negatedLabel": "Equity transaction"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease (increase) in net defined benefit liability (asset) resulting from payments in respect of settlements",
        "negatedLabel": "Payments to employees"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan in respect of settlements. [Refer: Decrease (increase) in net defined benefit liability (asset) resulting from gains (losses) arising from settlements; Net defined benefit liability (asset); Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r98"
     ]
    },
    "aval_PayrollLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PayrollLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payroll loans [member]",
        "terseLabel": "Payroll loans"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_PeerGroupIssuersFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PeerGroupIssuersFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Peer Group Issuers, Footnote [Text Block]",
        "terseLabel": "Peer Group Issuers, Footnote"
       }
      }
     },
     "auth_ref": [
      "r535"
     ]
    },
    "ecd_PeerGroupTotalShareholderRtnAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PeerGroupTotalShareholderRtnAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Peer Group Total Shareholder Return Amount",
        "terseLabel": "Peer Group Total Shareholder Return Amount"
       }
      }
     },
     "auth_ref": [
      "r535"
     ]
    },
    "aval_PensionAndSeveranceFundManagementFees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PensionAndSeveranceFundManagementFees",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Pension and severance fund management fees",
        "label": "Pension and severance fund management fees",
        "verboseLabel": "Pension and severance fund management"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PensionAndSeveranceFundManagementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PensionAndSeveranceFundManagementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Pension and Severance Fund Management [member]",
        "label": "Pension and Severance Fund Management [member]",
        "terseLabel": "Pension and Severance Fund Management"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PensionAndSeveranceFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PensionAndSeveranceFundsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to pension and severance funds.",
        "label": "Pension and severance funds"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_PeoActuallyPaidCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PeoActuallyPaidCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Actually Paid Compensation Amount",
        "terseLabel": "PEO Actually Paid Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r527"
     ]
    },
    "ecd_PeoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PeoMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO [Member]",
        "terseLabel": "PEO"
       }
      }
     },
     "auth_ref": [
      "r544"
     ]
    },
    "ecd_PeoName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PeoName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Name",
        "terseLabel": "PEO Name"
       }
      }
     },
     "auth_ref": [
      "r537"
     ]
    },
    "ecd_PeoTotalCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PeoTotalCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Total Compensation Amount",
        "terseLabel": "PEO Total Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r526"
     ]
    },
    "aval_PercentageOfAdditionalVotingEquityInterestsAcquired": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfAdditionalVotingEquityInterestsAcquired",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of additional voting equity interests",
        "label": "Percentage of additional voting equity interests acquired",
        "terseLabel": "Percentage of additional voting equity interests"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfAverageDifferenceInForeignCurrencyDenominatedRightsAndForeignCurrencyDenominatedObligationsOnConsolidatedBasis": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfAverageDifferenceInForeignCurrencyDenominatedRightsAndForeignCurrencyDenominatedObligationsOnConsolidatedBasis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The percentage of average difference in foreign currency denominated rights and foreign currency denominated obligations including both on and off balance sheet positions on consolidated basis.",
        "label": "Percentage of Average Difference in Foreign Currency Denominated Rights and Foreign Currency Denominated Obligations on Consolidated Basis"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfAverageDifferenceInForeignCurrencyDenominatedRightsAndForeignCurrencyDenominatedObligationsOnUnconsolidatedBasis": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfAverageDifferenceInForeignCurrencyDenominatedRightsAndForeignCurrencyDenominatedObligationsOnUnconsolidatedBasis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The percentage of average difference in foreign currency denominated rights and foreign currency denominated obligations including both on and off balance sheet positions on unconsolidated basis.",
        "label": "Percentage of Average Difference in Foreign Currency Denominated Rights and Foreign Currency Denominated Obligations on Unconsolidated Basis"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfCapitalConversionBuffer": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfCapitalConversionBuffer",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of capital conversion buffer.",
        "label": "Percentage of Capital Conversion Buffer",
        "terseLabel": "Capital Conversion Buffer"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfEquityInterestAgreedToSell": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfEquityInterestAgreedToSell",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of Equity Interest Agreed to Sell",
        "label": "Percentage of Equity Interest Agreed to Sell",
        "terseLabel": "Percentage of equity interest agreed to sell"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfEquityInterestTransferredToRelatedParty": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfEquityInterestTransferredToRelatedParty",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of Equity Interest Transferred to Related Party",
        "label": "Percentage of Equity Interest Transferred to Related Party",
        "terseLabel": "Percentage of equity interest transferred to related party"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfEquityInterestsSold": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfEquityInterestsSold",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of equity interests sold",
        "label": "Percentage of equity interests sold",
        "terseLabel": "Percentage of equity interests sold (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfHedgingEffectiveness": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfHedgingEffectiveness",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of hedging effectiveness",
        "label": "Percentage of hedging effectiveness",
        "terseLabel": "Percentage of hedging effectiveness"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfInvestmentInAssociatesCeasedAndRecognizedAsFinancialAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfInvestmentInAssociatesCeasedAndRecognizedAsFinancialAssets",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage Of Investment In Associates Ceased And Recognized As Financial Assets",
        "label": "Percentage Of Investment In Associates Ceased And Recognized As Financial Assets",
        "terseLabel": "Percentage of investment in associates ceased and recognized as financial assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfLiquidityRequirement": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfLiquidityRequirement",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of liquidity requirement",
        "label": "Percentage of liquidity requirement",
        "terseLabel": "Percentage of IRL ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfLoanPortfolioInForeignCurrency": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfLoanPortfolioInForeignCurrency",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCurrencyAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of loan portfolio in foreign currency.",
        "label": "Percentage Of Loan Portfolio in Foreign Currency",
        "terseLabel": "Percentage of loan portfolio in foreign currency"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfMaximumDeltaEconomicValueOfEquityOfSumOfOrdinaryBasicEquityAndAdditionalBasicEquity": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfMaximumDeltaEconomicValueOfEquityOfSumOfOrdinaryBasicEquityAndAdditionalBasicEquity",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of maximum Delta EVE calculated under interest rate shock scenarios by dividing the sum of Ordinary Basic Equity and Additional Basic Equity.",
        "label": "Percentage of maximum Delta Economic Value Of Equity of Sum Of Ordinary Basic Equity And Additional Basic Equity",
        "terseLabel": "Delta VEP / PBO+PBA"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfOrdinaryBasicEquityAndAdditionalBasicEquityOnWhichShockScenariosAreCalculated": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfOrdinaryBasicEquityAndAdditionalBasicEquityOnWhichShockScenariosAreCalculated",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of Ordinary Basic Equity and Additional Basic Equity on which shock scenarios are calculated.",
        "label": "Percentage of Ordinary Basic equity and Additional Basic Equity on which Shock Scenarios are Calculated",
        "terseLabel": "Percentage of ordinary basic equity and additional basic equity"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfParticipationInSubsidiaryForWhichValuationSampleIsCalculated": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfParticipationInSubsidiaryForWhichValuationSampleIsCalculated",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of participation in subsidiary for which valuation sample is calculated.",
        "label": "Percentage of Participation in Subsidiary for which Valuation Sample is Calculated",
        "terseLabel": "Percentage of participation in subsidiary"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfPortfolioSubjectToValueAtRisk": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfPortfolioSubjectToValueAtRisk",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to percentage of portfolio investments subject to value at risk.",
        "label": "Percentage of Portfolio Subject to Value at Risk",
        "terseLabel": "Percentage of Portfolio subject to VaR"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfPossibleDecreaseInVariation": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfPossibleDecreaseInVariation",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of possible decrease in variation.",
        "label": "Percentage of Possible Decrease In Variation",
        "terseLabel": "Decrease in variation (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfPossibleIncreaseInVariation": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfPossibleIncreaseInVariation",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of possible increase in variation.",
        "label": "Percentage of Possible Increase In Variation",
        "terseLabel": "Increase in variation (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfProgressOfBuilding": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfProgressOfBuilding",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The percentage of progress of building.",
        "label": "Percentage of Progress of Building",
        "terseLabel": "Percentage of progress of building"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfReasonablyPossibleIncreaseAndDecreaseInActuarialAssumption": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfReasonablyPossibleIncreaseAndDecreaseInActuarialAssumption",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of reasonably possible increase decrease in actuarial assumptions.",
        "label": "Percentage of reasonably possible increase and decrease in actuarial assumption"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfScenarioProbabilityWeightingInMeasuringExpectedCreditLosses": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfScenarioProbabilityWeightingInMeasuringExpectedCreditLosses",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of scenario probability weighting in measuring ECL.",
        "label": "Percentage Of Scenario Probability Weighting In Measuring Expected Credit Losses",
        "terseLabel": "Scenario probability weighting in measuring ECL (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfSharesSold": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfSharesSold",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of shares sold",
        "label": "Percentage of shares sold",
        "terseLabel": "Percentage of shares sold"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfSpinOff": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfSpinOff",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of spin off of subsidiary.",
        "label": "Percentage Of Spin Off",
        "terseLabel": "Percentage of spin off",
        "verboseLabel": "Spin-off percentage"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfSystematicRiskBuffer": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfSystematicRiskBuffer",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of systematic risk buffer.",
        "label": "Percentage of Systematic Risk Buffer",
        "terseLabel": "Systematic Risk Buffer"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfTotalAssetsOfFundsToBeInvestedInMandatorySeveranceAndPensionFunds": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfTotalAssetsOfFundsToBeInvestedInMandatorySeveranceAndPensionFunds",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The percentage of total assets of funds to be invested in mandatory severance and pension funds.",
        "label": "Percentage Of Total Assets Of Funds To Be Invested In Mandatory Severance And Pension Funds",
        "terseLabel": "Percentage of total assets of funds to be invested in mandatory severance and pension funds"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PercentageOfTotalAssetsRepresentingMaximumExposure": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfTotalAssetsRepresentingMaximumExposure",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of total assets representing maximum exposure.",
        "label": "Percentage Of Total Assets Representing Maximum Exposure",
        "terseLabel": "Percentage of total assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PercentageOfVotingEquityInterestsAcquired": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PercentageOfVotingEquityInterestsAcquired",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of voting equity interests acquired",
        "verboseLabel": "Percentage of voting equity interests acquired (as a percent)"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage of voting equity interests acquired in a business combination. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r285"
     ]
    },
    "aval_PercentageOfVotingEquityInterestsAcquiredAdditionalInterestsAcquired": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PercentageOfVotingEquityInterestsAcquiredAdditionalInterestsAcquired",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsAcquisitionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of voting equity interests acquired, additional interests acquired",
        "label": "Percentage of voting equity interests acquired, additional interests acquired",
        "terseLabel": "Percentage of voting equity interests acquired, additional interests acquired (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PersonalLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PersonalLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Personal loans [member]",
        "terseLabel": "Personal loans"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PersonnelExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PersonnelExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of personnel expenses.",
        "label": "Personnel expenses",
        "negatedLabel": "Personnel expenses"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PlanAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PlanAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Plan assets [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for defined benefit plan assets. Plan assets comprise: (a) assets held by a long-term employee benefit fund; and (b) qualifying insurance policies."
       }
      }
     },
     "auth_ref": [
      "r87"
     ]
    },
    "aval_PledgedAsCollateralInOperationsWithDerivativeInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PledgedAsCollateralInOperationsWithDerivativeInstrumentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to pledged as collateral in operations with derivative instruments.",
        "label": "Pledged as collateral in operations with derivative instruments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PledgedAsCollateralToSpecialEntitiesSuchAsCrccBrAndBvcMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PledgedAsCollateralToSpecialEntitiesSuchAsCrccBrAndBvcMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pledged as collateral to special entities such as CRCC, BR and BVC"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PledgedInMoneyMarketOperationsAndPledgedAsCollateralToSpecialEntitiesSuchAsCrccBrAndBvcMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PledgedInMoneyMarketOperationsAndPledgedAsCollateralToSpecialEntitiesSuchAsCrccBrAndBvcMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureTransfersOfFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Pledged in money market operations and pledged as collateral to special entities such as CRCC, BR and BVC [member]",
        "label": "Pledged in money market operations and pledged as collateral to special entities such as CRCC, BR and BVC"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PledgedInMoneyMarketOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PledgedInMoneyMarketOperationsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pledged in money market operations"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_PnsnAdjsPrrSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PnsnAdjsPrrSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Adjustments Prior Service Cost [Member]",
        "terseLabel": "Pension Adjustments Prior Service Cost"
       }
      }
     },
     "auth_ref": [
      "r528"
     ]
    },
    "ecd_PnsnAdjsSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PnsnAdjsSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Adjustments Service Cost [Member]",
        "terseLabel": "Pension Adjustments Service Cost"
       }
      }
     },
     "auth_ref": [
      "r584"
     ]
    },
    "ecd_PnsnBnftsAdjFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PnsnBnftsAdjFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Benefits Adjustments, Footnote [Text Block]",
        "terseLabel": "Pension Benefits Adjustments, Footnote"
       }
      }
     },
     "auth_ref": [
      "r527"
     ]
    },
    "aval_PortOperatingCompaniesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PortOperatingCompaniesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for port operating companies.",
        "label": "Port operating companies"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PossibleDecreaseInVariationByNumberOfTimes": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PossibleDecreaseInVariationByNumberOfTimes",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Possible decrease in variation by number of times.",
        "label": "Possible Decrease In Variation By Number Of Times",
        "terseLabel": "Decrease in variation by number of times"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PossibleIncreaseInVariationByNumberOfTimes": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PossibleIncreaseInVariationByNumberOfTimes",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Possible increase in variation by number of times.",
        "label": "Possible Increase In Variation By Number Of Times",
        "terseLabel": "Increase in variation by number of times"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PostemploymentBenefitExpenseDefinedBenefitPlans",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails": {
       "parentTag": "ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Post-employment benefit expense in profit or loss, defined benefit plans",
        "terseLabel": "Defined benefit plan"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of post-employment benefit expense included in profit or loss relating to defined benefit plans. [Refer: Profit (loss); Defined benefit plans [domain]] [Contrast: Increase (decrease) in net defined benefit liability (asset) resulting from expense (income) in profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r604",
      "r608"
     ]
    },
    "ifrs-full_PostemploymentBenefitExpenseDefinedContributionPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PostemploymentBenefitExpenseDefinedContributionPlans",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails": {
       "parentTag": "ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Post-employment benefit expense, defined contribution plans",
        "terseLabel": "Defined contribution plan"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods."
       }
      }
     },
     "auth_ref": [
      "r105"
     ]
    },
    "ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PostemploymentBenefitExpenseInProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Post-employment benefit expense in profit or loss",
        "totalLabel": "Total"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of post-employment benefit expense included in profit or loss"
       }
      }
     },
     "auth_ref": [
      "r608"
     ]
    },
    "aval_PostemploymentbenefitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PostemploymentbenefitsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentBenefitExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsSensitivityAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Post employment benefits",
        "label": "Post-Employment benefits"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PreferenceSharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PreferenceSharesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentTotalOutstandingSharesDetails",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Preference shares [member]",
        "terseLabel": "Preference shares"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity instruments that are senior in some aspects to ordinary shares, but subordinate to debt instruments in terms of claim. [Refer: Ordinary shares [member]]"
       }
      }
     },
     "auth_ref": [
      "r595"
     ]
    },
    "aval_PreferentialMinimumDividendPerSemesterPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PreferentialMinimumDividendPerSemesterPerShare",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentOutstandingSharesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Preferential minimum dividend per semester per share.",
        "label": "Preferential minimum dividend per semester per share",
        "terseLabel": "Preferential minimum dividend per semester per share"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Prepayments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Prepayments",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Prepayments",
        "verboseLabel": "Payment in advance"
       }
      },
      "en": {
       "role": {
        "documentation": "Receivables that represent amounts paid for goods and services before they have been delivered."
       }
      }
     },
     "auth_ref": [
      "r389"
     ]
    },
    "ifrs-full_PresentValueOfDefinedBenefitObligationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PresentValueOfDefinedBenefitObligationMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Present value of defined benefit obligation [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the present value of a defined benefit obligation. The present value of a defined benefit obligation is the present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods."
       }
      }
     },
     "auth_ref": [
      "r88"
     ]
    },
    "aval_PresumptiveIncomeNonRecoverableForIncomeTaxPurposes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PresumptiveIncomeNonRecoverableForIncomeTaxPurposes",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Presumptive income non-recoverable for income tax purposes",
        "label": "Presumptive income non-recoverable for income tax purposes",
        "terseLabel": "(Offset) of presumptive income considered non recoverable for income tax purpose"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PriceOfAfricanPalmPerTon": {
     "xbrltype": "perUnitItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PriceOfAfricanPalmPerTon",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The forecasted price of African palm.",
        "label": "Price of African palm per ton"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PriceOfNaturalRubber": {
     "xbrltype": "perUnitItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PriceOfNaturalRubber",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The forecasted price of natural rubber.",
        "label": "Price of natural rubber"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PrincipalPlaceOfBusinessOfSubsidiary": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PrincipalPlaceOfBusinessOfSubsidiary",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Principal place of business of subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The principal place of business of a subsidiary. [Refer: Principal place of business; Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r125",
      "r128",
      "r211",
      "r215"
     ]
    },
    "aval_PrivateEquityFundPactiaInmobiliarioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PrivateEquityFundPactiaInmobiliarioMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the information pertaining to private equity fund Pactia Inmobiliario.",
        "label": "Private equity fund Pactia Inmobiliario [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PrivateRealEstateEquityFundNexusMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PrivateRealEstateEquityFundNexusMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to private real estate equity fund Nexus.",
        "label": "Private real estate equity fund Nexus"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProbabilityOfDefaultAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProbabilityOfDefaultAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Probability of default [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r445",
      "r463"
     ]
    },
    "ifrs-full_ProbabilityOfDefaultDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProbabilityOfDefaultDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Probability of default [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Probability of default' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r445",
      "r463"
     ]
    },
    "aval_ProbabilityPercentageOfIndustryAndCommerceTaxPaid": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProbabilityPercentageOfIndustryAndCommerceTaxPaid",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Probability percentage of industry and commerce tax paid.",
        "label": "Probability percentage of industry and commerce tax paid",
        "terseLabel": "Probability percentage of industry and commerce tax paid"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations",
        "verboseLabel": "Proceeds from sale of non-current assets held for sale"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from the disposal of non-current assets or disposal groups classified as held for sale and discontinued operations. [Refer: Discontinued operations [member]; Disposal groups classified as held for sale [member]; Non-current assets or disposal groups classified as held for sale]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromIssueOfBondsNotesAndDebentures",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from issue of bonds, notes and debentures",
        "verboseLabel": "Issuance of debt securities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from the issuing of bonds, notes and debentures."
       }
      }
     },
     "auth_ref": [
      "r619"
     ]
    },
    "aval_ProceedsFromIssueOfBondsNotesAndDebenturesExcludingInterestIssuanceOfDebtSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProceedsFromIssueOfBondsNotesAndDebenturesExcludingInterestIssuanceOfDebtSecurities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proceeds from issue of bonds, notes and debentures, excluding interest issuance of debt securities",
        "label": "Proceeds from issue of bonds, notes and debentures, excluding interest issuance of debt securities",
        "verboseLabel": "Issuance of debt securities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ProceedsFromSaleOrDisposalOfFinancialAssetsCategorisedUnderFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProceedsFromSaleOrDisposalOfFinancialAssetsCategorisedUnderFairValueThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash in flow from sale or disposal of financial assets categorised under fair value through other comprehensive income.",
        "label": "Proceeds from Sale or Disposal of Financial Assets Categorised under Fair Value Through Other Comprehensive Income",
        "terseLabel": "Proceeds from sale of investments at FVOCI"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProceedsFromSalesOfBiologicalAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOfBiologicalAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales of biological assets",
        "verboseLabel": "Proceeds from sale of biological assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales of biological assets. [Refer: Biological assets]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_ProceedsFromSalesOfInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOfInvestmentProperty",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales of investment property",
        "verboseLabel": "Proceeds from sale of investment properties"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales of investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales of investments accounted for using equity method",
        "terseLabel": "Proceeds from sale of investments in associates"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales of investments accounted for using the equity method. [Refer: Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales of property, plant and equipment, classified as investing activities",
        "verboseLabel": "Proceeds from sale of own property and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r414"
     ]
    },
    "ifrs-full_ProceedsFromSalesOrMaturityOfFinancialAssetsMeasuredAtAmortisedCostClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOrMaturityOfFinancialAssetsMeasuredAtAmortisedCostClassifiedAsInvestingActivities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansRecordedAtAmortizedCostDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales or maturity of financial assets measured at amortised cost, classified as investing activities",
        "terseLabel": "Sale of portfolio"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales or maturity of financial assets measured at amortised cost, classified as investing activities."
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales or maturity of financial instruments, classified as investing activities",
        "verboseLabel": "Redemptions of financial assets at amortized cost"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales or maturity of financial instruments, classified as investing activities. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_ProductsAndServicesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProductsAndServicesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Products and services [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r372",
      "r428"
     ]
    },
    "ifrs-full_ProductsAndServicesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProductsAndServicesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Products and services [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the entity's products and services. It also represents the standard value for the 'Products and services' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r372",
      "r428"
     ]
    },
    "ifrs-full_ProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfIncomeCalc2": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss)",
        "positiveLabel": "Net income",
        "terseLabel": "Net Income",
        "totalLabel": "Net income for the year",
        "verboseLabel": "Net income for the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r2",
      "r42",
      "r191",
      "r206",
      "r209",
      "r364",
      "r367",
      "r419",
      "r433"
     ]
    },
    "ifrs-full_ProfitLossAttributableToAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to [abstract]",
        "terseLabel": "Net income attributable to owners of the parent:"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ProfitLossAttributableToNoncontrollingInterestAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProfitLossAttributableToNoncontrollingInterestAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Profit Loss Attributable To Noncontrolling Interest [Abstract]",
        "terseLabel": "Net income attributable to non-controlling interests:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProfitLossAttributableToNoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToNoncontrollingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfIncomeCalc2": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "definitionGuidance": "Non-controlling interest share of net income",
        "label": "Profit (loss), attributable to non-controlling interests",
        "negatedTerseLabel": "Less: participation of non-controlling interests",
        "totalLabel": "Net income attributable to non-controlling interests - Non-controlling interests"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing and discontinued operations attributable to non-controlling interests. [Refer: Profit (loss); Non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r45",
      "r213"
     ]
    },
    "ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share",
        "totalLabel": "Net Income allocated to common shareholders for basic EPS"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r134"
     ]
    },
    "ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share",
        "totalLabel": "Net Income allocated to common shareholders for diluted EPS"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r134"
     ]
    },
    "ifrs-full_ProfitLossAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToOwnersOfParent",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfIncomeCalc2": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails": {
       "parentTag": "ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to owners of parent",
        "terseLabel": "Net income attributable to owners of the parent",
        "totalLabel": "Net income attributable to owners of the parent - Owners of the parent"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r46"
     ]
    },
    "ifrs-full_ProfitLossAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails": {
       "parentTag": "ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) attributable to participating equity instruments other than ordinary shares, used in calculating basic earnings (loss) per instrument",
        "terseLabel": "Less: Allocation of undistributed earnings to preferred stockholders, basic"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) used in calculating basic earnings (loss) per instrument attributable to equity instruments that participate in profit with ordinary shares according to a predetermined formula. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r609",
      "r610"
     ]
    },
    "ifrs-full_ProfitLossAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingDilutedEarningsLossPerInstrument": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingDilutedEarningsLossPerInstrument",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails": {
       "parentTag": "ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) attributable to participating equity instruments other than ordinary shares, used in calculating diluted earnings (loss) per instrument",
        "terseLabel": "Less: Allocation of undistributed earnings to preferred stockholders, diluted"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) used in calculating diluted earnings (loss) per instrument attributable to equity instruments that participate in profit with ordinary shares according to a predetermined formula. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "aval_ProfitLossBeforeIncomeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProfitLossBeforeIncomeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Profit (Loss) Before Income Tax.",
        "label": "Profit (Loss) Before Income Tax",
        "terseLabel": "Net income before income tax"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProfitLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails": {
       "parentTag": "aval_NetIncomeLossFromDiscontinuedOperationsBeforeReclassificationOfOtherComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) before tax",
        "totalLabel": "Net income before tax expense"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) before tax expense or income. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r293",
      "r386",
      "r387",
      "r469",
      "r470"
     ]
    },
    "ifrs-full_ProfitLossFromContinuingOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromContinuingOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInJointVenturesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from continuing operations",
        "totalLabel": "Net income from continuing operations",
        "verboseLabel": "Participation in the profit or loss of the period"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing operations. [Refer: Continuing operations, unless line item indicates otherwise [member]; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r42",
      "r226",
      "r364",
      "r367"
     ]
    },
    "ifrs-full_ProfitLossFromContinuingOperationsAttributableToNoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromContinuingOperationsAttributableToNoncontrollingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfIncomeCalc2": {
       "parentTag": "ifrs-full_ProfitLossAttributableToNoncontrollingInterests",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from continuing operations attributable to non-controlling interests",
        "negatedTerseLabel": "Less: participation of non- controlling interests",
        "terseLabel": "Net income attributable to non-controlling interests - Net income for the period from continuing operations"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing operations attributable to non-controlling interests. [Refer: Profit (loss) from continuing operations; Non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r436",
      "r437"
     ]
    },
    "ifrs-full_ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntity",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share",
        "totalLabel": "Net Income allocated to common shareholders for basic EPS"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing operations attributable to ordinary equity holders of the parent entity. [Refer: Continuing operations, unless line item indicates otherwise [member]; Profit (loss) from continuing operations]"
       }
      }
     },
     "auth_ref": [
      "r134"
     ]
    },
    "ifrs-full_ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share",
        "totalLabel": "Net Income allocated to common shareholders for diluted EPS"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing operations attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss) from continuing operations]"
       }
      }
     },
     "auth_ref": [
      "r134"
     ]
    },
    "ifrs-full_ProfitLossFromContinuingOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromContinuingOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntity",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from continuing operations attributable to participating equity instruments other than ordinary shares, used in calculating basic earnings (loss) per instrument",
        "terseLabel": "Less: Allocation of undistributed earnings to preferred stockholders, basic"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing operations used in calculating basic earnings (loss) per instrument attributable to equity instruments that participate in profit with ordinary shares according to a predetermined formula. [Refer: Profit (loss) from continuing operations]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_ProfitLossFromContinuingOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingDilutedEarningsLossPerInstrument": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromContinuingOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingDilutedEarningsLossPerInstrument",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from continuing operations attributable to participating equity instruments other than ordinary shares, used in calculating diluted earnings (loss) per instrument",
        "verboseLabel": "Less: Allocation of undistributed earnings to preferred stockholders, diluted"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing operations used in calculating diluted earnings (loss) per instrument attributable to equity instruments that participate in profit with ordinary shares according to a predetermined formula. [Refer: Profit (loss) from continuing operations]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_ProfitLossFromDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromDiscontinuedOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsCashFlowDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from discontinued operations",
        "negatedTerseLabel": "Gain of discontinued operations, net of taxes",
        "terseLabel": "Net income from discontinued operations, net of tax",
        "totalLabel": "Net income from discontinued operations, net of tax",
        "verboseLabel": "Net income from discontinued operations"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from discontinued operations. [Refer: Discontinued operations [member]; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r53",
      "r62",
      "r227",
      "r292"
     ]
    },
    "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementOfIncomeCalc2": {
       "parentTag": "ifrs-full_ProfitLossAttributableToNoncontrollingInterests",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from discontinued operations attributable to non-controlling interests",
        "negatedLabel": "Less: participation of non- controlling interests",
        "terseLabel": "Net income attributable to non-controlling interests - Net income for the period from discontinued operations, net of tax",
        "verboseLabel": "Non-controlling interests"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from discontinued operations attributable to non-controlling interests. [Refer: Profit (loss) from discontinued operations; Non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r436",
      "r437"
     ]
    },
    "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntity",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from discontinued operations attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share",
        "totalLabel": "Net Income allocated to common shareholders for basic EPS"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from discontinued operations attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss) from discontinued operations]"
       }
      }
     },
     "auth_ref": [
      "r134"
     ]
    },
    "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from discontinued operations attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share",
        "totalLabel": "Net Income allocated to common shareholders for diluted EPS"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from discontinued operations attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss) from discontinued operations]"
       }
      }
     },
     "auth_ref": [
      "r134"
     ]
    },
    "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromDiscontinuedOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingBasicEarningsLossPerInstrument",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails": {
       "parentTag": "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntity",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from discontinued operations attributable to participating equity instruments other than ordinary shares, used in calculating basic earnings (loss) per instrument",
        "terseLabel": "Less: Allocation of undistributed earnings to preferred stockholders, basic"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from discontinued operations used in calculating basic earnings (loss) per instrument attributable to equity instruments that participate in profit with ordinary shares according to a predetermined formula. [Refer: Profit (loss) from discontinued operations]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingDilutedEarningsLossPerInstrument": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProfitLossFromDiscontinuedOperationsAttributableToParticipatingEquityInstrumentsOtherThanOrdinarySharesUsedInCalculatingDilutedEarningsLossPerInstrument",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails": {
       "parentTag": "ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from discontinued operations attributable to participating equity instruments other than ordinary shares, used in calculating diluted earnings (loss) per instrument",
        "terseLabel": "Less: Allocation of undistributed earnings to preferred stockholders, diluted"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from discontinued operations used in calculating diluted earnings (loss) per instrument attributable to equity instruments that participate in profit with ordinary shares according to a predetermined formula. [Refer: Profit (loss) from discontinued operations]"
       }
      }
     },
     "auth_ref": [
      "r610"
     ]
    },
    "aval_PromigasPanamCorporationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PromigasPanamCorporationMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Promigas Panam Corporation"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PromigasPerS.a.c.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PromigasPerS.a.c.Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "N/A",
        "label": "Promigas Per S.A.C."
       }
      }
     },
     "auth_ref": []
    },
    "aval_PromigasS.a.AndGasesDelPacficoS.a.c.UnderRule144a.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PromigasS.a.AndGasesDelPacficoS.a.c.UnderRule144a.Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Promigas S.A. and Gases del Pacfico S.A.C. Under rule 144A.",
        "label": "Promigas S.A. and Gases del Pacfico S.A.C. Under rule 144A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_PromigasSaEspAndSubsidiariesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PromigasSaEspAndSubsidiariesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Promigas S.A. E.S.P. and subsidiaries [member]",
        "label": "Promigas SA ESP and subsidiaries [member]",
        "terseLabel": "Promigas S.A. and Subsidiaries"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PromigasSaEspMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PromigasSaEspMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Promigas S.A. E.S.P."
       }
      }
     },
     "auth_ref": []
    },
    "aval_PromigasUsaIncMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PromigasUsaIncMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Promigas USA INC.",
        "label": "Promigas USA INC [Member]",
        "terseLabel": "Promigas USA INC"
       }
      }
     },
     "auth_ref": []
    },
    "aval_PromiorienteS.a.E.s.pMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PromiorienteS.a.E.s.pMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Promioriente S.A. E.S.P.",
        "label": "Promioriente S.A. E.S.P"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment",
        "terseLabel": "Property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r13",
      "r81"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentByOperatingLeaseStatusAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment by operating lease status [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r272"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentByOperatingLeaseStatusDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment by operating lease status [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all property, plant and equipment when disaggregated by the operating lease status by a lessor. It also represents the standard value for the 'Property, plant and equipment by operating lease status' axis if no other member is used. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r272"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentIncludingRightofuseAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment including right-of-use assets",
        "periodEndLabel": "Tangible assets at end of period",
        "periodStartLabel": "Tangible assets at beginning of period",
        "terseLabel": "Tangible assets",
        "totalLabel": "Total Tangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of property, plant and equipment including right-of-use assets whose underlying assets would be presented as property, plant and equipment if they were owned. [Refer: Property, plant and equipment; Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r261",
      "r592",
      "r603"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r82",
      "r404",
      "r432"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipmentNotSubjectToOperatingLeasesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentNotSubjectToOperatingLeasesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsNonCurrentAssetsByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment not subject to operating leases [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for property, plant and equipment that is not subject to operating leases. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r272"
     ]
    },
    "ifrs-full_PropertyPlantAndEquipmentSubjectToOperatingLeasesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipmentSubjectToOperatingLeasesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsOperatingLeaseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment subject to operating leases [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for property, plant and equipment that is subject to operating leases. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r272"
     ]
    },
    "aval_ProportionOfLossAllowanceToGrossExposure": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProportionOfLossAllowanceToGrossExposure",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proportion of loss allowance to gross exposure.",
        "label": "Proportion Of Loss Allowance To Gross Exposure",
        "terseLabel": "Proportion of Assets in Stage 2"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProportionOfOwnershipInterestInAssociate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProportionOfOwnershipInterestInAssociate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of ownership interest in associate",
        "terseLabel": "Ownership interest"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of ownership interest in an associate attributable to the entity. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r126",
      "r129",
      "r220"
     ]
    },
    "ifrs-full_ProportionOfOwnershipInterestInJointVenture": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProportionOfOwnershipInterestInJointVenture",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of ownership interest in joint venture",
        "terseLabel": "Ownership interest"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r126",
      "r129",
      "r220"
     ]
    },
    "ifrs-full_ProportionOfOwnershipInterestInSubsidiary": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProportionOfOwnershipInterestInSubsidiary",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingRealizationOfOtherComprehensiveIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of ownership interest in subsidiary",
        "terseLabel": "Percentage of economic interest held"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r126",
      "r129",
      "r216"
     ]
    },
    "aval_ProportionOfOwnershipInterestInSubsidiaryNoncontrollingInterests": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProportionOfOwnershipInterestInSubsidiaryNoncontrollingInterests",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proportion of ownership interest in subsidiary, noncontrolling interests",
        "label": "Proportion of ownership interest in subsidiary, noncontrolling interests",
        "terseLabel": "Non-controlling Interest"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProportionOfOwnershipInterestsHeldByNoncontrollingInterests",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of ownership interests held by non-controlling interests",
        "terseLabel": "Proportion of ownership interests held by non-controlling interests (as a percent)"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Total for all subsidiaries [member]; Non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r212"
     ]
    },
    "ifrs-full_ProportionOfVotingPowerHeldInSubsidiary": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProportionOfVotingPowerHeldInSubsidiary",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of voting rights held in subsidiary",
        "presentationGuidance": "Percentage of voting rights held",
        "terseLabel": "Percentage of voting rights held"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of the voting rights in a subsidiary held by the entity. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r126",
      "r129",
      "r216"
     ]
    },
    "ifrs-full_ProvisionForCreditCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProvisionForCreditCommitmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provision for credit commitments [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a provision for credit commitments entered into by the entity. [Refer: Classes of other provisions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r611"
     ]
    },
    "ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCostsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProvisionForDecommissioningRestorationAndRehabilitationCostsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provision for decommissioning, restoration and rehabilitation costs [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a provision relating to decommissioning, restoration and rehabilitation costs. [Refer: Classes of other provisions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r405",
      "r406"
     ]
    },
    "aval_ProvisionForForeclosedAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProvisionForForeclosedAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provision for foreclosed assets [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ProvisionForRecognitionOfAdditionalCostsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProvisionForRecognitionOfAdditionalCostsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to provision for recognition of additional costs.",
        "label": "Provision for recognition of additional costs"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProvisionUsedOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProvisionUsedOtherProvisions",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provision used, other provisions",
        "negatedLabel": "Provisions used during the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r158"
     ]
    },
    "ifrs-full_Provisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Provisions",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsEstimatedPeriodToBeCanceledDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provisions",
        "periodEndLabel": "Ending Balance",
        "periodStartLabel": "Beginning Balance",
        "totalLabel": "Total Provisions",
        "verboseLabel": "Provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities of uncertain timing or amount, including provisions for employee benefits."
       }
      }
     },
     "auth_ref": [
      "r20"
     ]
    },
    "ifrs-full_ProvisionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ProvisionsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provisions [abstract]",
        "verboseLabel": "Provisions"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ProvisionsForAdministrativeProceedings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProvisionsForAdministrativeProceedings",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of provisions for administrative proceedings.",
        "label": "Provisions For Administrative Proceedings",
        "terseLabel": "Provisions for administrative proceedings"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ProvisionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProvisionsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleAssociatedLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Provisions [member]",
        "label": "Provisions [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ProyectosDeInfraestructuraS.aMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProyectosDeInfraestructuraS.aMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Proyectos de Infraestructura S.A.",
        "label": "Proyectos de Infraestructura S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_ProyectosYDesarrollosVialesDelPacificoSasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ProyectosYDesarrollosVialesDelPacificoSasMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proyectos y Desarrollos Viales del Pacifico S.A.S. [member]",
        "label": "Proyectos y Desarrollos Viales del Pacifico SAS [member]",
        "terseLabel": "Proyectos y Desarrollos Viales del Pacifico S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "aval_PublicServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PublicServicesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Public services"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PurchaseOfBiologicalAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PurchaseOfBiologicalAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of biological assets",
        "negatedLabel": "Additions of cost of biological assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchase of biological assets. [Refer: Biological assets]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "aval_PurchaseOfFinancialAssetsCategorisedUnderFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "PurchaseOfFinancialAssetsCategorisedUnderFairValueThroughOtherComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash out flow for purchase of financial assets categorised under fair value through other comprehensive income.",
        "label": "Purchase of Financial Assets Categorised under Fair Value Through Other Comprehensive Income",
        "negatedLabel": "Acquisition of investments at FVOCI"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of financial instruments, classified as investing activities",
        "negatedLabel": "Purchases of financial assets at amortized cost"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchase of financial instruments. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of intangible assets, classified as investing activities",
        "negatedLabel": "Additions of others intangibles assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchases of intangible assets, classified as investing activities. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r413"
     ]
    },
    "ifrs-full_PurchaseOfInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PurchaseOfInvestmentProperty",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of investment property",
        "negatedLabel": "Acquisition of investment property"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchase of investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r618"
     ]
    },
    "ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of property, plant and equipment, classified as investing activities",
        "negatedLabel": "Acquisition of property, plant and equipment for own use and operating lease"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchases of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r413"
     ]
    },
    "ifrs-full_PurchasesFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "PurchasesFairValueMeasurementAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchases, fair value measurement, assets",
        "verboseLabel": "Additions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in the fair value measurement of assets resulting from purchases of those assets. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r246"
     ]
    },
    "ecd_PvpTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PvpTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance Disclosure [Table]",
        "terseLabel": "Pay vs Performance Disclosure"
       }
      }
     },
     "auth_ref": [
      "r525"
     ]
    },
    "ecd_PvpTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "PvpTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance [Table Text Block]",
        "terseLabel": "Pay vs Performance Disclosure, Table"
       }
      }
     },
     "auth_ref": [
      "r525"
     ]
    },
    "ifrs-full_RangeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RangeAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r198",
      "r253",
      "r276",
      "r284",
      "r425",
      "r427",
      "r630"
     ]
    },
    "ifrs-full_RangeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RangeDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesTextualDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregate ranges. It also represents the standard value for the 'Range' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r198",
      "r253",
      "r276",
      "r284",
      "r425",
      "r427",
      "r630"
     ]
    },
    "aval_RangeEightMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeEightMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range eight.",
        "label": "> 90%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RangeFiveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeFiveMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range five.",
        "label": "30% - 45%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RangeFourMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeFourMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range four.",
        "label": "22.5% - 30%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RangeOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeOneMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range one.",
        "label": "0% - 7.5%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RangeSevenMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeSevenMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range seven.",
        "label": "60% - 90%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RangeSixMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeSixMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range six.",
        "label": "45% - 60%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RangeThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeThreeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range three.",
        "label": "15% - 22.5%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RangeTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RangeTwoMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for portfolio credit by probability of default for range two.",
        "label": "7.5% - 15%"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RealEstatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RealEstatesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Real estates [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RealizationOfOtherComprehensiveIncomeLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RealizationOfOtherComprehensiveIncomeLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Realization of other comprehensive income (loss)",
        "label": "Realization of other comprehensive income (loss)",
        "terseLabel": "Realization of OCI"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RealizationOfOtherComprehensiveIncomeLossToProfitAndLossOfDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RealizationOfOtherComprehensiveIncomeLossToProfitAndLossOfDiscontinuedOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeComponentsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentConsolidatedOtherComprehensiveIncomeNonControllingInterestDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Realization of other comprehensive income (loss) to profit and loss of discontinued operations",
        "label": "Realization of other comprehensive income (loss) to profit and loss of discontinued operations",
        "terseLabel": "Realization of OCI to P&amp;L of discontinued operation"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RealizedGainLossOnEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RealizedGainLossOnEquityInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of realized gain or loss on equity instruments.",
        "label": "Realized Gain (Loss) on Equity Instruments",
        "terseLabel": "Effect of realization"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RecipesFormulaeModelsDesignsAndPrototypesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RecipesFormulaeModelsDesignsAndPrototypesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Recipes, formulae, models, designs and prototypes [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets representing recipes, formulae, models, designs and prototypes. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r410"
     ]
    },
    "aval_Reclassification": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Reclassification",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease in assets due to reclassification.",
        "label": "Reclassification",
        "terseLabel": "Reclassification"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReclassificationAdjustmentOfPropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReclassificationAdjustmentOfPropertyPlantAndEquipment",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reclassification adjustment of property plant and equipment.",
        "label": "Reclassification adjustment of property plant and equipment",
        "terseLabel": "Reclassifications"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reclassification adjustments on cash flow hedges, net of tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of reclassification adjustments related to cash flow hedges, net of tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Cash flow hedges [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r59",
      "r319",
      "r321"
     ]
    },
    "aval_ReclassificationBySpinOffAndDeConsolidationOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReclassificationBySpinOffAndDeConsolidationOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reclassification by Spin Off and De- Consolidation, Other Provisions",
        "label": "Reclassification by Spin Off and De- Consolidation, Other Provisions",
        "terseLabel": "Reclassification BAC"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReclassificationEquityMethodInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReclassificationEquityMethodInvestments",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reclassification equity method investments",
        "label": "Reclassification equity method investments",
        "negatedLabel": "Equity method"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RecognisedLiabilitiesDefinedBenefitPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RecognisedLiabilitiesDefinedBenefitPlan",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDerecognizedAssetsAndLiabilitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability",
        "totalLabel": "Net employee benefits",
        "verboseLabel": "Employee benefits"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deficit in a defined benefit plan. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_RecognitionOfRetainedInterestOnDiscontinuance": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RecognitionOfRetainedInterestOnDiscontinuance",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Recognition of Retained Interest on Discontinuance",
        "label": "Recognition of Retained Interest on Discontinuance",
        "terseLabel": "Recognition of retained interest"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReconciliationBetweenEffectiveIncomeTaxExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReconciliationBetweenEffectiveIncomeTaxExplanatoryTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of reconciliation of effective income tax.",
        "label": "Reconciliation Between Effective Income Tax Explanatory [Text Block]",
        "terseLabel": "Schedule of reconciliation between total expenses of the income tax calculated at the applicable enacted tax rate and the tax expense recognized in the statement of income"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reconciliation of changes in deferred tax liability (asset) [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReconciliationOfChangesInGoodwillAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ReconciliationOfChangesInGoodwillAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillRollForwardTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reconciliation of changes in goodwill [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RecoverableAmountOfAssetOrCashgeneratingUnit",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Recoverable amount of asset or cash-generating unit",
        "terseLabel": "Recoverable amount of asset or cash-generating unit"
       }
      },
      "en": {
       "role": {
        "documentation": "The higher of an asset\u2019s (or cash-generating unit\u2019s) fair value less costs of disposal and its value in use. [Refer: Total for all cash-generating units [member]]"
       }
      }
     },
     "auth_ref": [
      "r141"
     ]
    },
    "ecd_RecoveryOfErrCompDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "RecoveryOfErrCompDisclosureLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Recovery of Erroneously Awarded Compensation Disclosure [Line Items]",
        "terseLabel": "Recovery of Erroneously Awarded Compensation Disclosure"
       }
      }
     },
     "auth_ref": [
      "r492",
      "r503",
      "r513",
      "r546"
     ]
    },
    "ifrs-full_RecurringFairValueMeasurementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RecurringFairValueMeasurementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Recurring fair value measurement [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for fair value measurements which other IFRSs require or permit in the statement of financial position at the end of each reporting period. [Refer: IFRSs [member]]"
       }
      }
     },
     "auth_ref": [
      "r241"
     ]
    },
    "aval_RedebanMulticolorSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RedebanMulticolorSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Redeban Multicolor S.A.",
        "label": "Redeban Multicolor S.A. [member]",
        "terseLabel": "Redeban Multicolor S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_RedemptionsOrSalesReclassifiedFromOCIBeforeTaxToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RedemptionsOrSalesReclassifiedFromOCIBeforeTaxToProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesAmountsReclassifiedToProfitOrLossFromOciBeforeTaxesDetails": {
       "parentTag": "aval_AmountReclassifiedToProfitOrLossFromOtherComprehensiveIncomeBeforeTax",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesAmountsReclassifiedToProfitOrLossFromOciBeforeTaxesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of redemption or sales reclassified from other comprehensive income before tax to profit or loss.",
        "label": "Redemptions Or Sales Reclassified From O C I Before Tax to Profit Or Loss",
        "terseLabel": "Redemptions or sales"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RegulatoryCapitalDeductionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RegulatoryCapitalDeductionsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulatory capital deductions [abstract]",
        "label": "Regulatory capital deductions [abstract]",
        "terseLabel": "Deductions:"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RegulatoryCapitalMeasure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RegulatoryCapitalMeasure",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulatory capital measure.",
        "label": "Regulatory Capital Measure",
        "terseLabel": "Capital measure"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RegulatoryExposureMeasure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RegulatoryExposureMeasure",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulatory exposure measure.",
        "label": "Regulatory Exposure Measure",
        "terseLabel": "Exposure measure"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RegulatoryShockScenarioAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RegulatoryShockScenarioAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table.",
        "label": "Regulatory Shock Scenario [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RegulatoryShockScenarioDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RegulatoryShockScenarioDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for regulatory shock scenarios.",
        "label": "Regulatory Shock Scenario [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RentalIncomeFromInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RentalIncomeFromInvestmentProperty",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails": {
       "parentTag": "ifrs-full_RentalIncomeFromInvestmentPropertyNetOfDirectOperatingExpense",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rental income from investment property",
        "verboseLabel": "Income from rents"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of rental income arising from investment property recognised in profit or loss. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r180"
     ]
    },
    "ifrs-full_RentalIncomeFromInvestmentPropertyNetOfDirectOperatingExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RentalIncomeFromInvestmentPropertyNetOfDirectOperatingExpense",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsInvestmentPropertiesAmountsRecognizedInStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rental income from investment property, net of direct operating expense",
        "totalLabel": "Net"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of rental income arising from investment property, net of direct operating expense from such property. [Refer: Direct operating expense from investment property; Rental income from investment property]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_RentekS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RentekS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Rentek S.A.S",
        "label": "Rentek S.A.S [member]",
        "terseLabel": "Rentek S.A.S"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RentingAutomayorS.a.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RentingAutomayorS.a.Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Renting Automayor S.A.",
        "label": "Renting Automayor S.A. [member]",
        "terseLabel": "Renting Automayor S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_RentingAutomayorS.a.s.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RentingAutomayorS.a.s.Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesOwnershipInterestAndBookValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Renting Automayor S.A.S.",
        "label": "Renting Automayor S.A.S. [member]",
        "terseLabel": "Renting Automayor S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RepairsAndMaintenanceExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RepairsAndMaintenanceExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Repairs and maintenance expense",
        "negatedLabel": "Maintenance and repairs"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expenses incurred for the day-to-day servicing of assets, which may include the cost of labour, consumables or small parts."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "ifrs-full_RepaymentsOfBondsNotesAndDebentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RepaymentsOfBondsNotesAndDebentures",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfCashFlows"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Repayments of bonds, notes and debentures",
        "negatedLabel": "Payment of outstanding debt securities",
        "verboseLabel": "Payments of bonds"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for repayments of bonds, notes and debentures."
       }
      }
     },
     "auth_ref": [
      "r619"
     ]
    },
    "ifrs-full_ReportableSegmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ReportableSegmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reportable segments [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for operating segments for which IFRS 8 requires information to be disclosed. The entity shall report separately information about an operating segment that meets any of the following quantitative thresholds: (a) reported revenue, including both sales to external customers and intersegment sales or transfers, is 10 per cent or more of the combined revenue, internal and external, of all operating segments; (b) the absolute amount of its reported profit or loss is 10 per cent or more of the greater, in absolute amount, of (i) the combined reported profit of all operating segments that did not report a loss and (ii) the combined reported loss of all operating segments that reported a loss; or (c) assets are 10 per cent or more of the combined assets of all operating segments. Additionally operating segments that do not meet any of the quantitative thresholds may be considered reportable, and separately disclosed, if management believes that information about the segment would be useful to users of the financial statements. [Refer: Operating segments [member]]"
       }
      }
     },
     "auth_ref": [
      "r256",
      "r364",
      "r402",
      "r435"
     ]
    },
    "aval_ReposInterbankLoansPortfolioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReposInterbankLoansPortfolioMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Repos, interbank loans portfolio [member]",
        "label": "Repos, interbank loans portfolio [member]",
        "terseLabel": "Repos, interbank loans portfolio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RequiredPercentageOfIncreaseInNetIncomeTaxToGetAuditBenefit": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RequiredPercentageOfIncreaseInNetIncomeTaxToGetAuditBenefit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Required percentage of increase in net income tax to get audit benefit",
        "label": "Required percentage of increase in net income tax to get audit benefit",
        "terseLabel": "Required percentage of increase in net income tax to get audit benefit"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageCheckingAndSavingsAccountsAfterReduction": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageCheckingAndSavingsAccountsAfterReduction",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskReserveRequirementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, checking and savings accounts, after reduction",
        "label": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, checking and savings accounts, after reduction",
        "terseLabel": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, checking and savings accounts, after reduction (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageCheckingAndSavingsAccountsBeforeReduction": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageCheckingAndSavingsAccountsBeforeReduction",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskReserveRequirementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, checking and savings accounts, before reduction",
        "label": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, checking and savings accounts, before reduction",
        "terseLabel": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, checking and savings accounts, before reduction (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageTimeDepositsAfterReduction": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageTimeDepositsAfterReduction",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskReserveRequirementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, time deposits, after reduction",
        "label": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, time deposits, after reduction",
        "terseLabel": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, time deposits, after reduction (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageTimeDepositsBeforeReduction": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReserveRequirementDomesticCountryOnePercentReductionReserveRatioPercentageTimeDepositsBeforeReduction",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskReserveRequirementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, time deposits, before reduction",
        "label": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, time deposits, before reduction",
        "terseLabel": "Reserve requirement, domestic country, one percent reduction, reserve ratio percentage, time deposits, before reduction (as a percent)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ReservesAndRetainedEarnings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ReservesAndRetainedEarnings",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reserves and retained earnings",
        "label": "Reserves and retained earnings"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_RestatementDateAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "RestatementDateAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Determination Date [Axis]",
        "terseLabel": "Restatement Determination Date:"
       }
      }
     },
     "auth_ref": [
      "r493",
      "r504",
      "r514",
      "r547"
     ]
    },
    "ecd_RestatementDeterminationDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "RestatementDeterminationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Determination Date",
        "terseLabel": "Restatement Determination Date"
       }
      }
     },
     "auth_ref": [
      "r494",
      "r505",
      "r515",
      "r548"
     ]
    },
    "ecd_RestatementDoesNotRequireRecoveryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "RestatementDoesNotRequireRecoveryTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Does Not Require Recovery [Text Block]",
        "terseLabel": "Restatement does not require Recovery"
       }
      }
     },
     "auth_ref": [
      "r501",
      "r512",
      "r522",
      "r555"
     ]
    },
    "aval_RestrictedInvestmentFundsRelatedToConcesionariaNuevaViaAlMarMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RestrictedInvestmentFundsRelatedToConcesionariaNuevaViaAlMarMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for restricted investment funds related to concesionaria nueva via al mar.",
        "label": "Restricted Investment Funds Related To Concesionaria Nueva Via al Mar [Member]",
        "terseLabel": "Concesionaria Nueva Va al Mar"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RestrictedInvestmentFundsRelatedToConcesionariaVialDelOrienteMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RestrictedInvestmentFundsRelatedToConcesionariaVialDelOrienteMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for restricted investment funds related to Concesionaria Vial del Oriente.",
        "label": "Restricted Investment Funds Related To Concesionaria Vial Del Oriente [Member]",
        "terseLabel": "Concesionaria Vial del Oriente"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RestrictedInvestmentFundsRelatedToConcesionariaVialDlPacificoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RestrictedInvestmentFundsRelatedToConcesionariaVialDlPacificoMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for restricted investment funds related to Concesionaria Vial Dl Pacifico.",
        "label": "Restricted Investment Funds Related To Concesionaria Vial Dl Pacifico [Member]",
        "terseLabel": "Concesionaria Vial del Pacfico"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RetainedEarnings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RetainedEarnings",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_EquityAttributableToOwnersOfParent",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_CoreEquityTierOneCapital",
       "weight": 1.0,
       "order": 5.0
      },
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained earnings",
        "netLabel": "Net income for the period",
        "totalLabel": "Retained earnings",
        "verboseLabel": "Retained earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the entity's cumulative undistributed earnings or deficit."
       }
      }
     },
     "auth_ref": [
      "r390",
      "r392"
     ]
    },
    "ifrs-full_RetainedEarningsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RetainedEarningsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained earnings [member]",
        "terseLabel": "Appropriated retaining earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing an entity's cumulative undistributed earnings or deficit."
       }
      }
     },
     "auth_ref": [
      "r6",
      "r388"
     ]
    },
    "ifrs-full_RetirementsIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RetirementsIntangibleAssetsOtherThanGoodwill",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirements, intangible assets other than goodwill",
        "negatedLabel": "Withdrawals"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in intangible assets other than goodwill resulting from retirements. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsPostEmploymentAndLongTermBenefitsMovementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense",
        "terseLabel": "Remeasurements on plan assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [domain]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)]"
       }
      }
     },
     "auth_ref": [
      "r92"
     ]
    },
    "ifrs-full_RevaluationIncreaseDecreasePropertyPlantAndEquipmentIncludingRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RevaluationIncreaseDecreasePropertyPlantAndEquipmentIncludingRightofuseAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation increase (decrease), property, plant and equipment including right-of-use assets",
        "terseLabel": "Revaluation of investment properties"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in property, plant and equipment including right-of-use assets resulting from revaluations to fair value. [Refer: Property, plant and equipment including right-of-use assets; Revaluation surplus]"
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "ifrs-full_Revenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "Revenue",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfJointVenturesDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "definitionGuidance": "Total external income",
        "label": "Revenue",
        "terseLabel": "Income",
        "verboseLabel": "Total income"
       }
      },
      "en": {
       "role": {
        "documentation": "The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims."
       }
      }
     },
     "auth_ref": [
      "r49",
      "r225",
      "r293",
      "r358",
      "r366",
      "r372",
      "r373",
      "r376",
      "r386",
      "r387",
      "r419"
     ]
    },
    "ifrs-full_RevenueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RevenueAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue [abstract]",
        "verboseLabel": "Income"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RevenueDiscontinuedSegment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RevenueDiscontinuedSegment",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue, discontinued segment",
        "label": "Revenue, discontinued segment",
        "terseLabel": "Discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RevenueFromContinuingOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RevenueFromContinuingOperations",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue from Continuing Operations",
        "label": "Revenue from continuing operations",
        "terseLabel": "Total income from continuing operations"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RevenueFromContractsWithCustomers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RevenueFromContractsWithCustomers",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue from contracts with customers",
        "terseLabel": "Revenue from contracts with customers"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity\u2019s ordinary activities in exchange for consideration."
       }
      }
     },
     "auth_ref": [
      "r254",
      "r255"
     ]
    },
    "ifrs-full_RevenueFromDividends": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RevenueFromDividends",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciDividendIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend income",
        "verboseLabel": "Dividends"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends recognised as income. Dividends are distributions of profits to holders of equity investments in proportion to their holdings of a particular class of capital."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_RevenueFromInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RevenueFromInterest",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails": {
       "parentTag": "aval_InterestIncomeExpenseNetFromDiscontinuedOperations",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "aval_InterestIncomeExpenseNetFromContinuingOperations",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income",
        "terseLabel": "Interest income",
        "totalLabel": "Total interest income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income arising from interest."
       }
      }
     },
     "auth_ref": [
      "r231",
      "r359",
      "r370",
      "r590"
     ]
    },
    "aval_RevenueFromSaleOfGoodsAndRenderingOfServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RevenueFromSaleOfGoodsAndRenderingOfServices",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_GrossProfit",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of revenue arising from the sale of goods and rendering of services.",
        "label": "Revenue From Sale of Goods and Rendering of Services",
        "terseLabel": "Income from sales of goods and services",
        "verboseLabel": "Total income from sales of good and services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RightOfUseMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RightOfUseMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Right-of-use [member]",
        "label": "Right-of-use [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RightofuseAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition": {
       "parentTag": "ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Right-of-use assets",
        "terseLabel": "Right-of-use assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that represent a lessee's right to use an underlying asset for the lease term that do not meet the definition of investment property. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee."
       }
      }
     },
     "auth_ref": [
      "r261",
      "r267"
     ]
    },
    "ifrs-full_RightofuseAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "RightofuseAssetsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsCarryingValueDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Right-of-use assets [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for right-of-use assets. [Refer: Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r260"
     ]
    },
    "aval_RiskWeightedAssetsIncludingRegulatoryValueAtRiskAndOperationalRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RiskWeightedAssetsIncludingRegulatoryValueAtRiskAndOperationalRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Risk-weighted assets including regulatory value at risk and operational risk",
        "label": "Risk weighted assets including regulatory value at risk and operational risk",
        "terseLabel": "Risk-weighted assets including regulatory market risk and operational risk"
       }
      }
     },
     "auth_ref": []
    },
    "aval_RubberMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "RubberMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rubber [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_Rule10b51ArrAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "Rule10b51ArrAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rule 10b5-1 Arrangement Adopted [Flag]",
        "terseLabel": "Rule 10b5-1 Arrangement Adopted"
       }
      }
     },
     "auth_ref": [
      "r564"
     ]
    },
    "ecd_Rule10b51ArrTrmntdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "Rule10b51ArrTrmntdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rule 10b5-1 Arrangement Terminated [Flag]",
        "terseLabel": "Rule 10b5-1 Arrangement Terminated"
       }
      }
     },
     "auth_ref": [
      "r564"
     ]
    },
    "country_SV": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "SV",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "EL SALVADOR"
       }
      }
     },
     "auth_ref": []
    },
    "aval_Salaries": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "Salaries",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails": {
       "parentTag": "ifrs-full_KeyManagementPersonnelCompensation",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesCompensationOfKeyManagementPersonnelDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of salaries paid to key management personnel.",
        "label": "Salaries",
        "terseLabel": "Salaries"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SalesAndServicesCommissionsExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SalesAndServicesCommissionsExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails": {
       "parentTag": "ifrs-full_FeeAndCommissionExpense",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndExpensesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sales and services commissions expenses",
        "label": "Sales and services commissions expenses",
        "negatedLabel": "Sales and services commissions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SalesFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SalesFairValueMeasurementAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sales, fair value measurement, assets",
        "negatedTerseLabel": "Sales/redemptions",
        "verboseLabel": "Sales/redemptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in the fair value measurement of assets resulting from sales. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r246"
     ]
    },
    "aval_SalesTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SalesTax",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails": {
       "parentTag": "aval_OtherAccountsReceivablesGross",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetOtherAccountsReceivableDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of receivables from sales tax.",
        "label": "Sales Tax",
        "terseLabel": "Taxes"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SavingDepositsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SavingDepositsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Saving deposits [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScenarioBMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScenarioBMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Scenario B.",
        "label": "Scenario B"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScenarioCMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScenarioCMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Scenario C.",
        "label": "Scenario C"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ScenarioForecastMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "ScenarioForecastMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forecast [Member]",
        "terseLabel": "Forecast"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScenarioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScenarioMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Scenario A.",
        "label": "Scenario A"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ScenarioUnspecifiedDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "ScenarioUnspecifiedDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scenario [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScheduleOfChangeInFairValueAndInterestExpensesOfHedgingInstrumentTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScheduleOfChangeInFairValueAndInterestExpensesOfHedgingInstrumentTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of change in fair value and interest expenses of hedging instruments.",
        "label": "Schedule of Change in Fair Value and Interest Expenses of Hedging Instrument [Table Text Block]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScheduleOfConcentrationOfDepositsReceivedFromCustomersPerEconomicSectorTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScheduleOfConcentrationOfDepositsReceivedFromCustomersPerEconomicSectorTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The disclosure of concentration of deposits received from customers per economic sector.",
        "label": "Schedule Of Concentration Of Deposits Received From Customers Per Economic Sector [Table Text Block]",
        "terseLabel": "Schedule of the concentration of deposits received from customers per economic sector"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScheduleOfInterbankBorrowingsOvernightFundsAndBorrowingsFromBanksAndOthersTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScheduleOfInterbankBorrowingsOvernightFundsAndBorrowingsFromBanksAndOthersTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The information about disclosure of interbank borrowings, overnight funds and borrowings from banks and others.",
        "label": "Schedule Of Interbank Borrowings Overnight Funds And Borrowings From Banks And Others [Table text Block]",
        "terseLabel": "Schedule of interbank borrowings, overnight funds and borrowings from banks and others"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScheduleOfInterestExpensesTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScheduleOfInterestExpensesTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of interest expenses.",
        "label": "Schedule of Interest Expenses [Table Text Block]",
        "terseLabel": "Schedule of interest expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScheduleOfInterestRateRiskOnAssetsAndLiabilitiesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScheduleOfInterestRateRiskOnAssetsAndLiabilitiesTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The detailed disclosure about the interest rate risk on various assets and liabilities.",
        "label": "Schedule of Interest Rate Risk on Assets and Liabilities [Text Block]",
        "terseLabel": "Disclosure of interest rates exposure for assets and liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ScheduleOfResultsOfDeltaEconomicValueOfEquityAndNetInterestMarginMeasurementsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ScheduleOfResultsOfDeltaEconomicValueOfEquityAndNetInterestMarginMeasurementsTableTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the results of Delta Economic Value of Equity (EVE) and Net Interest Margin measurements (NIM).",
        "label": "Schedule Of Results Of Delta Economic Value of Equity And Net Interest Margin Measurements [Table Text Block]",
        "terseLabel": "Schedule of results of delta economic value of equity and net interest margin measurements"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedByCentralBanksMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedByCentralBanksMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities issued by central banks"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedByColombianGovernmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedByColombianGovernmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities issued or secured by Colombian Government"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedByEntitiesOfNonfinancialSectorMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedByEntitiesOfNonfinancialSectorMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities issued by entities of the non-financial sector entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedByForeignGovernmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedByForeignGovernmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities issued or secured by foreign Governments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedByOtherEntitiesOfColombianGovernmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedByOtherEntitiesOfColombianGovernmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities issued or secured by other Colombian Government entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedByOtherFinancialEntitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedByOtherFinancialEntitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTradingAssetsInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities issued or secured by other financial entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedOrSecuredByCentralBanksMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedOrSecuredByCentralBanksMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for securities issued or secured by central banks.",
        "label": "Securities issued or secured by central banks"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SecuritiesIssuedOrSecuredByNonFinancialSectorEntitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SecuritiesIssuedOrSecuredByNonFinancialSectorEntitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueInvestmentInDebtSecuritiesPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentInDebtAtAmortizedCostPledgedAsCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesInvestmentsInDebtSecuritiesAtFairValueThroughOciDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n\\a",
        "label": "Securities issued or secured by non-financial sector entities"
       }
      }
     },
     "auth_ref": []
    },
    "dei_Security12bTitle": {
     "xbrltype": "securityTitleItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "Security12bTitle",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Title of 12(b) Security",
        "documentation": "Title of a 12(b) registered security."
       }
      }
     },
     "auth_ref": [
      "r474"
     ]
    },
    "dei_SecurityExchangeName": {
     "xbrltype": "edgarExchangeCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "SecurityExchangeName",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Security Exchange Name",
        "documentation": "Name of the Exchange on which a security is registered."
       }
      }
     },
     "auth_ref": [
      "r476"
     ]
    },
    "ifrs-full_SegmentConsolidationItemsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SegmentConsolidationItemsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment consolidation items [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r364"
     ]
    },
    "ifrs-full_SegmentConsolidationItemsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SegmentConsolidationItemsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment consolidation items [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Segment consolidation items' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r371"
     ]
    },
    "ifrs-full_SegmentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SegmentsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r140",
      "r256",
      "r364",
      "r402",
      "r435"
     ]
    },
    "ifrs-full_SegmentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SegmentsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfFinancialPositionDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all segments of an entity. It also represents the standard value for the 'Segments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r140",
      "r256",
      "r371",
      "r402",
      "r435"
     ]
    },
    "aval_SensitivityAnalysisPercentageOfValuationSample": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SensitivityAnalysisPercentageOfValuationSample",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the percentage of valuation sample.",
        "label": "Sensitivity Analysis, Percentage of Valuation Sample",
        "terseLabel": "Percentage of valuation sample"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SensitivityOfInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SensitivityOfInvestments",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The sensitivity analysis of investments under different scenarios.",
        "label": "Sensitivity Of Investments",
        "terseLabel": "Sensitivity analysis of investments"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SeparateBasisMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SeparateBasisMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Separate basis.",
        "label": "Separate Basis [Member]",
        "terseLabel": "Separate basis"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ServiceConcessionArrangementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ServiceConcessionArrangementMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetContractAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureOtherAccountsReceivableNetNetOfImpairmentLossesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Service concession arrangement [member]",
        "label": "Service concession arrangement [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ServiceConcessionArrangementsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ServiceConcessionArrangementsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Service concession arrangements [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "ifrs-full_ServiceConcessionArrangementsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ServiceConcessionArrangementsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsFinancialAssetsInConcessionArrangementsDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Service concession arrangements [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for arrangements in which an entity (the operator) may enter into an arrangement with another entity (the grantor) to provide services that give the public access to major economic and social facilities. The grantor may be a public or private sector entity, including a governmental body. Examples of service concession arrangements involve water treatment and supply facilities, motorways, car parks, tunnels, bridges, airports and telecommunication networks. Examples of arrangements that are not service concession arrangements include an entity outsourcing the operation of its internal services (for example, employee cafeteria, building maintenance, and accounting or information technology functions). It also represents the standard value for the 'Service concession arrangements' axis if no other member is used. [Refer: Government [member]]"
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "ifrs-full_ServiceConcessionRightsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ServiceConcessionRightsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Service concession rights [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for service concession rights. [Refer: Service concession arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r614"
     ]
    },
    "aval_ServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ServicesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Services [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ServiciosDeIdentidadDigitalS.a.sMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ServiciosDeIdentidadDigitalS.a.sMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Servicios de Identidad Digital S.A.S.",
        "label": "Servicios de Identidad Digital S.A.S [member]",
        "terseLabel": "Servicios de Identidad Digital S.A.S."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2024",
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Award Types",
        "terseLabel": "All Award Types"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax",
        "terseLabel": "Other Comprehensive Income, investments in associates"
       }
      },
      "en": {
       "role": {
        "documentation": "The entity's share of the other comprehensive income of associates and joint ventures accounted for using the equity method, net of tax. [Refer: Total for all associates [member]; Investments accounted for using equity method; Total for all joint ventures [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r56",
      "r234"
     ]
    },
    "ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfOtherComprehensiveIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, before tax",
        "terseLabel": "Investments in associates and joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "Share of the other comprehensive income of associates and joint ventures accounted for using the equity method that will be reclassified to profit or loss, before tax."
       }
      }
     },
     "auth_ref": [
      "r54"
     ]
    },
    "ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails": {
       "parentTag": "ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEffectOfCurrentAndDeferredTaxesInEachComponentOfOtherComprehensiveIncomeInEquityDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax",
        "terseLabel": "Investments in associates and joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "Share of the other comprehensive income of associates and joint ventures accounted for using the equity method that will be reclassified to profit or loss, net of tax."
       }
      }
     },
     "auth_ref": [
      "r54"
     ]
    },
    "ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails": {
       "parentTag": "aval_OtherIncomeNet",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsIncomeByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingDetailsOfTransactionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "definitionGuidance": "Share of profit of equity accounted investees, net of tax",
        "label": "Share of profit (loss) of associates and joint ventures accounted for using equity method",
        "terseLabel": "Share of profit of equity accounted investees, net of tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The entity's share of the profit (loss) of associates and joint ventures accounted for using the equity method. [Refer: Total for all associates [member]; Investments accounted for using equity method; Total for all joint ventures [member]; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r51",
      "r362",
      "r370"
     ]
    },
    "aval_ShortRatesDownwardShockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ShortRatesDownwardShockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for short rates downward shock, with larger negative interest rate shocks for shorter maturities to converge with the baseline for longer maturities.",
        "label": "Short Rates Downward Shock [Member]",
        "terseLabel": "Short-term downward shock"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ShortRatesUpwardShockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ShortRatesUpwardShockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for short rates upward shock, with larger positive interest rate shocks for shorter maturities to converge with the baseline for longer maturities.",
        "label": "Short Rates Upward Shock [Member]",
        "terseLabel": "Short-term upward shock"
       }
      }
     },
     "auth_ref": []
    },
    "aval_ShortTermBenefitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ShortTermBenefitsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsLiabilitiesForEmployeeBenefitsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "n/a",
        "label": "Short Term Benefits [Member]",
        "terseLabel": "Short Term Benefits"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ShorttermEmployeeBenefitsExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ShorttermEmployeeBenefitsExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails": {
       "parentTag": "aval_CostOfMerchandiseSoldAndServiceExpenses",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetIncomeFromContractsWithCustomersIncomeAndCostForGoodsAndServicesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Short-term employee benefits expense",
        "negatedLabel": "Personnel expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense from employee benefits (other than termination benefits) that are expected to be settled wholly within twelve months after the end of the annual reporting period in which the employees render the related services."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_SignificantInvestmentsInAssociatesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInAssociatesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Associates [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r238"
     ]
    },
    "ifrs-full_SignificantInvestmentsInAssociatesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInAssociatesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesFinancialInformationOfAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesRollForwardOfInvestmentInAssociatesDetails",
      "http://www.grupoaval.com/role/DisclosureInvestmentsInAssociatesAndJointVenturesVotingRightPercentageDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Associates [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Associates' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r238"
     ]
    },
    "ifrs-full_SignificantInvestmentsInSubsidiariesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInSubsidiariesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subsidiaries [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r236"
     ]
    },
    "ifrs-full_SignificantInvestmentsInSubsidiariesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInSubsidiariesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueAndInterestExpenseDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTables",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureLoansInterestIncomeByPortfolioDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskAmountOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskLiquidAssetsAndLriDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskPercentageOfIrlRatioDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subsidiaries [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Subsidiaries' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r130",
      "r236"
     ]
    },
    "ifrs-full_SignificantUnobservableInputAssets": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SignificantUnobservableInputAssets",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Significant unobservable input, assets",
        "terseLabel": "Significant unobservable input, assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The value of significant unobservable input used in the measurement of the fair value of assets."
       }
      }
     },
     "auth_ref": [
      "r243"
     ]
    },
    "aval_SixMonthSecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SixMonthSecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Six Month Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]",
        "label": "Six Month Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]",
        "terseLabel": "SOFR6"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SociedadAdministradoraDeFondosDePensionesYCesantiasPorvenirSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SociedadAdministradoraDeFondosDePensionesYCesantiasPorvenirSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureGoodwillCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsImpairmentTestAssumptionsDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillTables",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestFinancialInformationDetails",
      "http://www.grupoaval.com/role/DisclosureNonControllingInterestNonControllingInterestsDetails",
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTables",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntityTextualDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sociedad Administradora de Fondos de Pensiones y Cesantias Porvenir S.A.",
        "terseLabel": "Porvenir S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aval_SociedadPortuariaElCayaoS.a.E.s.pMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SociedadPortuariaElCayaoS.a.E.s.pMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Sociedad Portuaria El Cayao S.A. E.S.P.",
        "label": "Sociedad Portuaria El Cayao S.A. E.S.P"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SociedadPortuariaElCayaoSaEspMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SociedadPortuariaElCayaoSaEspMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingMovementsOfOtherComprehensiveIncomeRelatedToHedgesOfNetInvestmentInForeignOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sociedad Portuaria El Cayao S.A. E.S.P."
       }
      }
     },
     "auth_ref": []
    },
    "aval_SofrRateThreeMMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SofrRateThreeMMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for SOFR rate 3M.",
        "label": "SOFR Rate Three M [member]",
        "terseLabel": "SOFR rate 3M"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SolvencyRiskRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SolvencyRiskRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This represents an enterprise's ability to meet its debt and other obligations.",
        "label": "Solvency Risk Ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SpecialFreeZoneTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SpecialFreeZoneTaxRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax rate of special free zone.",
        "label": "Special Free Zone Tax Rate",
        "terseLabel": "Tax rate of special free zone"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SpeculativeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SpeculativeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioCashAndCashEquivalentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvtplDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Speculative grade [member]",
        "terseLabel": "Speculative grade"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SpinOffAmountOfEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SpinOffAmountOfEquity",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingImpactsOnAssetsLiabilitiesAndEquityRecognizedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Spin Off Amount of Equity",
        "label": "Spin Off Amount of Equity",
        "terseLabel": "Spin-off amount"
       }
      }
     },
     "auth_ref": []
    },
    "aval_StabilizationReservesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "StabilizationReservesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to Stabilization reserves.",
        "label": "Stabilization Reserves [Member]",
        "terseLabel": "Stabilization reserves"
       }
      }
     },
     "auth_ref": []
    },
    "aval_StandbyCreditCardFacilityCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "StandbyCreditCardFacilityCommitmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for standby credit card facility commitments.",
        "label": "Standby credit card facility"
       }
      }
     },
     "auth_ref": []
    },
    "aval_StandbyLettersOfCreditCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "StandbyLettersOfCreditCommitmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for standby letters of credit commitments.",
        "label": "Standby letters of credit"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfCashFlowsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "StatementOfCashFlowsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of cash flows [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of changes in equity [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityLineItems",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of changes in equity [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityTable",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of changes in equity [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to changes in equity."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    },
    "ifrs-full_StatementOfComprehensiveIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "StatementOfComprehensiveIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of comprehensive income [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfFinancialPositionAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "StatementOfFinancialPositionAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of financial position [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_StatementScenarioAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2024",
     "localname": "StatementScenarioAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosGrossExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenariosProportionOfAssetsInStage2Details",
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementScenarioOfProbabilityWeightingInMeasuringEclDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scenario [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatutoryReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "StatutoryReserve",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails": {
       "parentTag": "ifrs-full_RetainedEarnings",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentAppropriatedRetainedEarningsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statutory reserve",
        "terseLabel": "Statutory and voluntary reserves"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing reserves created based on legal requirements."
       }
      }
     },
     "auth_ref": [
      "r593"
     ]
    },
    "aval_SteepenerShockMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SteepenerShockMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for steepener shock, where there is a steepening shift of the yield curve, with negative interest rate shocks for shorter maturities and positive interest rate shocks for longer maturities.",
        "label": "Steepener Shock [Member]",
        "terseLabel": "Steepening shock (short-term rates down, long-term rates up)"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_StkPrcOrTsrEstimationMethodTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "StkPrcOrTsrEstimationMethodTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Price or TSR Estimation Method [Text Block]",
        "terseLabel": "Stock Price or TSR Estimation Method"
       }
      }
     },
     "auth_ref": [
      "r496",
      "r507",
      "r517",
      "r550"
     ]
    },
    "us-gaap_StockAppreciationRightsSARSMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2024",
     "localname": "StockAppreciationRightsSARSMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Appreciation Rights (SARs) [Member]",
        "terseLabel": "Stock Appreciation Rights (SARs)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SubordinatedInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SubordinatedInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Subordinated instruments.",
        "label": "Subordinated Instruments",
        "terseLabel": "Subordinated instruments"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SubsidiariesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SubsidiariesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total for all subsidiaries [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for entities that are controlled by another entity."
       }
      }
     },
     "auth_ref": [
      "r115",
      "r127",
      "r130",
      "r236"
     ]
    },
    "aval_SuppliesAndStationary": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SuppliesAndStationary",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of expenses relating to Supplies and stationary.",
        "label": "Supplies and stationary",
        "negatedLabel": "Supplies and stationary"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SurchargeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SurchargeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Surcharge"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SurplusOfPresumptiveIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SurplusOfPresumptiveIncomeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Surplus of presumptive income [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_SurtigasS.a.E.s.pMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "SurtigasS.a.E.s.pMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Surtigas S.A. E.S.P.",
        "label": "Surtigas S.A. E.S.P."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SwapContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "SwapContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFinancialInstrumentsForHedgingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingDerivativeLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Swap contract [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a derivative financial instrument that involves the exchange of cash flow streams between the parties of the contract over a specified period. [Refer: Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ecd_TabularListTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TabularListTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tabular List [Table Text Block]",
        "terseLabel": "Tabular List, Table"
       }
      }
     },
     "auth_ref": [
      "r543"
     ]
    },
    "aval_TangibleAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TangibleAssetsAbstract",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfFinancialPosition"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tangible assets [abstract]",
        "verboseLabel": "Tangible assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxBenefitsInAcquisitionOfPropertyAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxBenefitsInAcquisitionOfPropertyAndEquipment",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "It represents tax benefits in acquisition of property and equipment.",
        "label": "Tax Benefits In Acquisition Of Property and Equipment",
        "negatedLabel": "Tax benefits in the acquisition of property and equipment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of expense not deductible in determining taxable profit (tax loss)",
        "verboseLabel": "Non deductible expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining taxable profit (tax loss). [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r69"
     ]
    },
    "ifrs-full_TaxEffectOfForeignTaxRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TaxEffectOfForeignTaxRates",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of foreign tax rates",
        "verboseLabel": "Profits (losses) in Subsidiaries in tax free countries or with different tax rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to foreign tax rates. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r69"
     ]
    },
    "aval_TaxEffectOfNonAccountableTaxRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxEffectOfNonAccountableTaxRevenue",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax effect of non accountable tax revenue",
        "label": "Tax effect of non accountable tax revenue",
        "terseLabel": "Non-accountable tax revenues in sale of BHI"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxEffectOfRevenuesTaxableByDifferentTaxRate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxEffectOfRevenuesTaxableByDifferentTaxRate",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax effect of revenues taxable by different tax rate",
        "label": "Tax effect of revenues taxable by different tax rate",
        "terseLabel": "Revenues taxable by different tax rate"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxEffectOfTaxDiscounts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxEffectOfTaxDiscounts",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount representing the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to tax discounts.",
        "label": "Tax Effect Of Tax Discounts",
        "negatedLabel": "Tax discounts"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxEffectOfTaxLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TaxEffectOfTaxLosses",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of tax losses",
        "verboseLabel": "Generation (offset) of tax losses considered non recoverable for income tax purpose"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to tax losses. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r69"
     ]
    },
    "aval_TaxEffectOnProfitLossInSalesOrAppraisalOfInvestment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxEffectOnProfitLossInSalesOrAppraisalOfInvestment",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": -1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "It represents tax benefit from profit (loss) in sales or appraisal of investment.",
        "label": "Tax effect on profit loss in sales or appraisal of investment",
        "negatedLabel": "Profit on sales or appraisal of investment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxExpenseIncomeAtApplicableTaxRate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TaxExpenseIncomeAtApplicableTaxRate",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax expense (income) at applicable tax rate",
        "verboseLabel": "Theoretical income tax expense"
       }
      },
      "en": {
       "role": {
        "documentation": "The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate]"
       }
      }
     },
     "auth_ref": [
      "r69"
     ]
    },
    "ifrs-full_TaxExpenseOtherThanIncomeTaxExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TaxExpenseOtherThanIncomeTaxExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax expense other than income tax expense",
        "negatedLabel": "Taxes and fees"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of tax expense exclusive of income tax expense."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "ifrs-full_TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails": {
       "parentTag": "aval_NetIncomeLossFromDiscontinuedOperationsBeforeReclassificationOfOtherComprehensiveIncome",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax expense (income) relating to profit (loss) from ordinary activities of discontinued operations",
        "negatedLabel": "Income tax expense"
       }
      },
      "en": {
       "role": {
        "documentation": "The tax expense (income) relating to the profit (loss) arising from ordinary activities of discontinued operations. [Refer: Discontinued operations [member]; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r76",
      "r294"
     ]
    },
    "aval_TaxLossCarryForwardInExcessOfMinimumPresumptiveIncomeExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxLossCarryForwardInExcessOfMinimumPresumptiveIncomeExplanatoryTextBlock",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tax Loss Carry Forward In Excess of Minimum Presumptive Income Explanatory",
        "label": "Tax Loss Carry Forward In Excess of Minimum Presumptive Income Explanatory [Text Block]",
        "terseLabel": "Schedule of tax loss carry forward and excess of presumptive income over taxable income of the entities which are not recognized as deferred tax assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxLossCarryForwardsAndExcessOfPresumptiveIncomeNotRecognizedAsDeferredTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxLossCarryForwardsAndExcessOfPresumptiveIncomeNotRecognizedAsDeferredTaxAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax loss carry forwards and excess of presumptive income not recognized as deferred tax assets",
        "label": "Tax loss carry forwards and excess of presumptive income not recognized as deferred tax assets",
        "totalLabel": "Tax loss carry forwards and excess of presumptive income not recognized as deferred tax assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxLossesCarryForwardMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxLossesCarryForwardMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax losses carry forward [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxLossesOnWhichNoDeferredTaxAssetRecorded": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxLossesOnWhichNoDeferredTaxAssetRecorded",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax losses on which no deferred tax asset recorded",
        "label": "Tax losses on which no deferred tax asset, recorded",
        "terseLabel": "Tax losses on which no deferred tax asset recorded"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxUncertaintyLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxUncertaintyLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxUncertaintiesInOpenTaxPositionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax uncertainty liability",
        "label": "Tax uncertainty liability",
        "verboseLabel": "Tax uncertainty liability"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TaxValueUnit": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TaxValueUnit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax value unit",
        "label": "Tax value unit",
        "terseLabel": "Tax value unit (UVT)"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TechnicalRegulatoryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TechnicalRegulatoryCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Technical regulatory capital",
        "label": "Technical regulatory capital",
        "totalLabel": "Technical capital"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TelecommunicationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TelecommunicationsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Telecommunications [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Temporary difference, unused tax losses and unused tax credits [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r75"
     ]
    },
    "ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxAssetsAndLiabilitiesGrossDeferredTaxAndOffsetDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesByTypeOfTemporaryDifferenceDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxEstimatesToRecoverIncomeTaxAssetsAndSettleIncomeTaxLiabilitiesDeferredTaxDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Temporary difference, unused tax losses and unused tax credits [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for temporary differences, unused tax losses and unused tax credits. It also represents the standard value for the 'Temporary difference, unused tax losses and unused tax credits' axis if no other member is used. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r75"
     ]
    },
    "ifrs-full_TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxDeferredTaxesFromInvestmentsInSubsidiariesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised",
        "terseLabel": "Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised"
       }
      },
      "en": {
       "role": {
        "documentation": "The aggregate amount of temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements, for which deferred tax liabilities have not been recognised as a result of satisfying both of the following conditions: (a) the parent, investor, joint venturer or joint operator is able to control the timing of the reversal of the temporary difference; and (b) it is probable that the temporary difference will not reverse in the foreseeable future. [Refer: Total for all associates [member]; Total for all subsidiaries [member]; Temporary differences [member]; Investments in subsidiaries reported in separate financial statements]"
       }
      }
     },
     "auth_ref": [
      "r72"
     ]
    },
    "aval_TemporarySecuritiesTransferOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TemporarySecuritiesTransferOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails": {
       "parentTag": "aval_InterbankFunds",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsInterbankBorrowingsOvernightFundsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Temporary securities transfer operations",
        "label": "Temporary securities transfer operations",
        "terseLabel": "Temporary securities transfer operations"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TenderOfferOverSubscriptionRatio": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TenderOfferOverSubscriptionRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureReportingEntityDiscontinuedOperationsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tender Offer Over Subscription Ratio",
        "label": "Tender Offer Over Subscription Ratio",
        "terseLabel": "Tender offer oversubscribed ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TierOneCapitalSolvencyRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TierOneCapitalSolvencyRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tier one capital solvency ratio",
        "label": "Tier one capital solvency ratio",
        "terseLabel": "Tier 1 capital solvency ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TierOnePrimaryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TierOnePrimaryCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TechnicalRegulatoryCapital",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tier one primary capital",
        "label": "Tier one primary capital",
        "totalLabel": "Tier I"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TierTwoCapitalSolvencyRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TierTwoCapitalSolvencyRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tier two capital solvency ratio",
        "label": "Tier two capital solvency ratio",
        "terseLabel": "Tier II solvency ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TierTwoSecondaryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TierTwoSecondaryCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TechnicalRegulatoryCapital",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tier two secondary capital",
        "label": "Tier two secondary capital",
        "totalLabel": "Tier II capital"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TimeDepositsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TimeDepositsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingFairValueHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Time deposits [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TimingOfTransferOfGoodsOrServicesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TimingOfTransferOfGoodsOrServicesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Timing of transfer of goods or services [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "ifrs-full_TimingOfTransferOfGoodsOrServicesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TimingOfTransferOfGoodsOrServicesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsRevenueFromContractsWithCustomersDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Timing of transfer of goods or services [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all timings of the transfer of goods or services in contracts with customers. It also represents the standard value for the 'Timing of transfer of goods or services' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r431"
     ]
    },
    "aval_TitularizadoraColombianaS.A.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TitularizadoraColombianaS.A.Member",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureInvestmentSecuritiesEquityInstrumentsThroughOciTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Titularizadora Colombiana S.A.",
        "label": "Titularizadora Colombiana S. A. [Member]",
        "terseLabel": "Titularizadora Colombiana S.A."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TopOfRangeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TopOfRangeMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsEffectiveInterestRatesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails",
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureGoodwillCashGeneratingUnitsGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails",
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Top of range [member]",
        "terseLabel": "Top of range"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for top of a range."
       }
      }
     },
     "auth_ref": [
      "r198",
      "r253",
      "r276",
      "r284",
      "r425",
      "r427",
      "r630"
     ]
    },
    "aval_TotalAssetsWeightedByRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TotalAssetsWeightedByRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of total assets weighted by risk.",
        "label": "Total assets weighted by risk",
        "verboseLabel": "Risk-weighted assets"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TotalDemandDeposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TotalDemandDeposits",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails": {
       "parentTag": "ifrs-full_DepositsFromCustomers",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsDepositsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of total balances in customers' demand deposits held by the entity.",
        "label": "Total Demand Deposits",
        "totalLabel": "Total demand deposits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TotalEquityRelatedToOtherChanges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TotalEquityRelatedToOtherChanges",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of total equity related to other changes.",
        "label": "Total Equity Related To Other Changes",
        "terseLabel": "Total equity related to other changes"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TotalIncomeAvailableForDistribution": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TotalIncomeAvailableForDistribution",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureSubsequentEventsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of net income and occasional reserve available for distribution of the the shareholders.",
        "label": "Total income available for distribution",
        "totalLabel": "Total Income available for disposal of the General Meeting of Shareholders"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TotalLiabilitiesRelatedToOtherChanges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TotalLiabilitiesRelatedToOtherChanges",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsReconciliationOfMovementsOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of total liabilities related to other changes.",
        "label": "Total Liabilities Related To Other Changes",
        "terseLabel": "Total liabilities related to other changes"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_TotalShareholderRtnAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TotalShareholderRtnAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Shareholder Return Amount",
        "terseLabel": "Total Shareholder Return Amount"
       }
      }
     },
     "auth_ref": [
      "r535"
     ]
    },
    "ecd_TotalShareholderRtnVsPeerGroupTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TotalShareholderRtnVsPeerGroupTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Shareholder Return Vs Peer Group [Text Block]",
        "terseLabel": "Total Shareholder Return Vs Peer Group"
       }
      }
     },
     "auth_ref": [
      "r542"
     ]
    },
    "aval_TotalSolvencyRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TotalSolvencyRatio",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total solvency ratio",
        "label": "Total Solvency Ratio"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TotalSovereignRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TotalSovereignRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total sovereign risk.",
        "label": "Total Sovereign Risk"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TourismMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TourismMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tourism [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradeAndOtherPayables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradeAndOtherPayables",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade and other payables",
        "verboseLabel": "Accounts payable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of trade payables and other payables. [Refer: Trade payables; Other payables]"
       }
      }
     },
     "auth_ref": [
      "r19"
     ]
    },
    "ifrs-full_TradeAndOtherPayablesToTradeSuppliers": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradeAndOtherPayablesToTradeSuppliers",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade payables",
        "terseLabel": "Suppliers and services payable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of payment due to suppliers for goods and services used in the entity's business."
       }
      }
     },
     "auth_ref": [
      "r594"
     ]
    },
    "ifrs-full_TradeAndOtherReceivablesDueFromRelatedParties": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradeAndOtherReceivablesDueFromRelatedParties",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Receivables due from related parties",
        "terseLabel": "Accounts receivable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of receivables due from related parties. [Refer: Total for all related parties [member]]"
       }
      }
     },
     "auth_ref": [
      "r389"
     ]
    },
    "aval_TradeAndTourismMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TradeAndTourismMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade and tourism"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradeReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradeReceivables",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade receivables",
        "terseLabel": "Financial assets in credit operations"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount due from customers for goods and services sold."
       }
      }
     },
     "auth_ref": [
      "r389"
     ]
    },
    "aval_TradeReceivablesAndContractAssetsFromIndividualCustomersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TradeReceivablesAndContractAssetsFromIndividualCustomersMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingSimplifiedApproachDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents information pertaining to trade receivables and contract assets from individual customers.",
        "label": "Trade Receivables And Contract Assets From Individual Customers"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradeReceivablesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradeReceivablesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade receivables [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for trade receivables. [Refer: Trade receivables]"
       }
      }
     },
     "auth_ref": [
      "r328",
      "r335",
      "r446",
      "r590"
     ]
    },
    "ecd_TradingArrAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TradingArrAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement [Axis]",
        "terseLabel": "Trading Arrangement:"
       }
      }
     },
     "auth_ref": [
      "r563"
     ]
    },
    "ecd_TradingArrByIndTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TradingArrByIndTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangements, by Individual [Table]",
        "terseLabel": "Trading Arrangements, by Individual"
       }
      }
     },
     "auth_ref": [
      "r565"
     ]
    },
    "aval_TradingAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TradingAssetsAndLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Trading assets and liabilities [abstract]",
        "label": "Trading assets and liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TradingAssetsAndLiabilitiesNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TradingAssetsAndLiabilitiesNet",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTotalTradingAssetsAndLiabilitiesNetDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of trading asset (liabilities) net as on the balance sheet date.",
        "label": "Trading assets and liabilities, net",
        "terseLabel": "Total trading assets and liabilities net"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TradingDerivativesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TradingDerivativesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfLiabilitiesOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Trading derivatives [member]",
        "label": "Trading derivatives [member]",
        "terseLabel": "Trading derivatives"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradingEquitySecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradingEquitySecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading equity securities [member]",
        "verboseLabel": "Equity securities"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity instruments that (a) are acquired or incurred principally for the purpose of selling or repurchasing it in the near term; or (b) on initial recognition are part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking."
       }
      }
     },
     "auth_ref": [
      "r423",
      "r426"
     ]
    },
    "ifrs-full_TradingIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradingIncomeExpense",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureAnalysisOfOperatingSegmentsStatementOfIncomeDetails",
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySaleOfBacHoldingSummaryOfDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureReportingEntitySpinOffBacHoldingDiscontinuedOperationsIncomeStatementDetails",
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading income (expense)",
        "netLabel": "Total net trading income (loss)",
        "terseLabel": "Net trading income (loss)",
        "verboseLabel": "Net trading income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income (expense) relating to trading assets and liabilities."
       }
      }
     },
     "auth_ref": [
      "r597"
     ]
    },
    "ifrs-full_TradingIncomeExpenseOnDebtInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradingIncomeExpenseOnDebtInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading income (expense) on debt instruments",
        "verboseLabel": "Fixed income (loss) securities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of trading income (expense) relating to debt instruments. [Refer: Debt instruments held; Trading income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_TradingIncomeExpenseOnDerivativeFinancialInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradingIncomeExpenseOnDerivativeFinancialInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading income (expense) on derivative financial instruments",
        "terseLabel": "Net income (loss) on derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of trading income (expense) relating to derivative financial instruments. [Refer: Derivatives [member]; Trading income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_TradingIncomeExpenseOnEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradingIncomeExpenseOnEquityInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading income (expense) on equity instruments",
        "verboseLabel": "Equities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of trading income (expense) relating to equity instruments. [Refer: Equity instruments held; Trading income (expense)]"
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "aval_TradingRiskAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TradingRiskAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading risk [axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TradingRiskDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TradingRiskDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading risk [domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradingSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TradingSecuritiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureClassificationOfFinancialAssetsAndFinancialLiabilitiesFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueMeasurementsOfFairValueOfAssetsOnRecurringBasisDetails",
      "http://www.grupoaval.com/role/DisclosureNetTradingIncomeLossDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementConsolidatedCreditRiskExposureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsTradingDerivativesAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySectorDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInDebtSecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesInvestmentsInEquitySecuritiesAtFairValueDetails",
      "http://www.grupoaval.com/role/DisclosureTradingAssetsAndLiabilitiesTradingAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading securities [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments that (a) are acquired or incurred principally for the purpose of selling or repurchasing it in the near term; or (b) on initial recognition are part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r448",
      "r467"
     ]
    },
    "dei_TradingSymbol": {
     "xbrltype": "tradingSymbolItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "TradingSymbol",
     "presentation": [
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Symbol",
        "documentation": "Trading symbol of an instrument as listed on an exchange."
       }
      }
     },
     "auth_ref": []
    },
    "aval_TransactionsAvcAndAch": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TransactionsAvcAndAch",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of transactions AVC and ACH.",
        "label": "Transactions AVC and ACH",
        "terseLabel": "Transactions AVC and ACH"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TransferToNonCurrentAssetsHeldForSaleOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TransferToNonCurrentAssetsHeldForSaleOtherThanGoodwill",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsIntangibleAssetsInConcessionArrangementsTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of transfer to non-current assets held-for-sale other than goodwill.",
        "label": "Transfer to non-current assets held-for-sale other than goodwill",
        "negatedLabel": "Transfer to non-current assets held for sale"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TransfersOutOfLevel3OfFairValueHierarchyAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TransfersOutOfLevel3OfFairValueHierarchyAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTransfersBetweenLevel1Level2AndLevel3OfFairValueHierarchyDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfers out of Level 3 of fair value hierarchy, assets",
        "verboseLabel": "Transfers out of Level 3 of fair value hierarchy, assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of transfers of assets out of Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]]"
       }
      }
     },
     "auth_ref": [
      "r247"
     ]
    },
    "aval_TransfersToNoncurrentAssetsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TransfersToNoncurrentAssetsHeldForSale",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueReconciliationLevel3OfFairValueHierarchyTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Decrease in investment properties due to transfers to non-current assets held for sale.",
        "label": "Transfers to noncurrent assets held-for-sale",
        "verboseLabel": "Transfers to non-current assets held for sale"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TransitionPeriodToComplyWithSystemicBuffer": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TransitionPeriodToComplyWithSystemicBuffer",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRegulatoryCapitalManagementDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the transition period to comply with the systemic buffer.",
        "label": "Transition period to Comply with the Systemic Buffer",
        "terseLabel": "Transition period to comply with the systemic buffer"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TransmetanoE.s.p.S.aMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TransmetanoE.s.p.S.aMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureConcessionArrangementsRightsSummaryOfMainConcessionContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for Transmetano E.S.P. S.A.",
        "label": "Transmetano E.S.P. S.A"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TransportMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TransportMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transport [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TransportationAndCommunicationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TransportationAndCommunicationsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationBySectorDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transportation and communications"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TransportationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TransportationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transportation expense",
        "negatedLabel": "Transportation services"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense arising from transportation services."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_TravelExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TravelExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 21.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Travel expense",
        "negatedLabel": "Travel expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense arising from travel."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ecd_TrdArrAdoptionDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TrdArrAdoptionDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Adoption Date",
        "terseLabel": "Adoption Date"
       }
      }
     },
     "auth_ref": [
      "r566"
     ]
    },
    "ecd_TrdArrDuration": {
     "xbrltype": "durationItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TrdArrDuration",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Duration",
        "terseLabel": "Arrangement Duration"
       }
      }
     },
     "auth_ref": [
      "r567"
     ]
    },
    "ecd_TrdArrExpirationDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TrdArrExpirationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Expiration Date",
        "terseLabel": "Expiration Date"
       }
      }
     },
     "auth_ref": [
      "r567"
     ]
    },
    "ecd_TrdArrIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TrdArrIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r565"
     ]
    },
    "ecd_TrdArrIndTitle": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TrdArrIndTitle",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Individual Title",
        "terseLabel": "Title"
       }
      }
     },
     "auth_ref": [
      "r565"
     ]
    },
    "ecd_TrdArrSecuritiesAggAvailAmt": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TrdArrSecuritiesAggAvailAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Securities Aggregate Available Amount",
        "terseLabel": "Aggregate Available"
       }
      }
     },
     "auth_ref": [
      "r568"
     ]
    },
    "ecd_TrdArrTerminationDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "TrdArrTerminationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Termination Date",
        "terseLabel": "Termination Date"
       }
      }
     },
     "auth_ref": [
      "r566"
     ]
    },
    "aval_TwelveMonthExpectedCreditLossesAndLifetimeExpectedCreditLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TwelveMonthExpectedCreditLossesAndLifetimeExpectedCreditLossesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Twelve-month expected credit losses and lifetime expected credit losses [member]",
        "label": "Twelve-month expected credit losses and lifetime expected credit losses [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TwelvemonthExpectedCreditLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TwelvemonthExpectedCreditLossesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "12-month expected credit losses [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the portion of lifetime expected credit losses that represent the expected credit losses that result from default events on a financial instrument that are possible within the 12 months after the reporting date. [Refer: Type of measurement of expected credit losses [domain]; Lifetime expected credit losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r327",
      "r334"
     ]
    },
    "ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypeOfMeasurementOfExpectedCreditLossesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Type of measurement of expected credit losses [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337"
     ]
    },
    "ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypeOfMeasurementOfExpectedCreditLossesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementChangesInGrossCarryingAmountDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachBySegmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostEvaluatedUsingGeneralApproachOtherAccountsReceivableAndContractAssetsForCorporateCustomersDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioOtherAccountsReceivableAtAmortizedCostGeneralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelLossAllowanceDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementIdentifiableCollateralDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementImpactOfMeasurementOfEclDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLossAllowanceRollForwardDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementProbabilityOfDefaultAnalysisDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Type of measurement of expected credit losses [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of measurement of expected credit losses. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. This member also represents the standard value for the 'Type of measurement of expected credit losses' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337"
     ]
    },
    "ifrs-full_TypesOfCustomersAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfCustomersAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of customers [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r430"
     ]
    },
    "ifrs-full_TypesOfCustomersDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfCustomersDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureCustomerDepositsConcentrationOfDepositsReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of customers [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of customers. It also represents the standard value for the 'Types of customers' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r430"
     ]
    },
    "ifrs-full_TypesOfHedgesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfHedgesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of hedges [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r315",
      "r317",
      "r320"
     ]
    },
    "ifrs-full_TypesOfHedgesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfHedgesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingAccumulatedOciDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingCashFlowHedgesDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOfInterestRateRiskDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingHedgingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingInterestRateSwapsAndCrossCurrencySwapsDetails",
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of hedges [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of hedges. It also represents the standard value for the 'Types of hedges' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r315",
      "r317",
      "r320"
     ]
    },
    "ifrs-full_TypesOfInterestRatesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfInterestRatesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of interest rates [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r628"
     ]
    },
    "ifrs-full_TypesOfInterestRatesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfInterestRatesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureFinancialObligationsIssuedBondsByIssuedDateAndMaturityDateTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRelatedPartiesGeneralInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of interest rates [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of interest rates. It also represents the standard value for the 'Types of interest rates' axis if no other member is used. [Refer: Interest rate risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r628"
     ]
    },
    "ifrs-full_TypesOfRisksAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfRisksAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of risks [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r277",
      "r278",
      "r279",
      "r281",
      "r307",
      "r325",
      "r326",
      "r384"
     ]
    },
    "ifrs-full_TypesOfRisksDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "TypesOfRisksDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskNetFinancialAssetLiabilityPositionDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralForeignExchangeRiskResultsOfDeltaEveAndDeltaNimMeasurementsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskFinancialLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskInterestBearingLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementStructuralInterestRateRiskResultsOfNimAndEveShocksDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskLiabilitiesDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementTradingBookRiskNetPositionDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of risks [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of risks. It also represents the standard value for the 'Types of risks' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r277",
      "r278",
      "r279",
      "r281",
      "r307",
      "r325",
      "r326",
      "r384"
     ]
    },
    "aval_TypesOfTaxesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TypesOfTaxesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of taxes [axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_TypesOfTaxesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "TypesOfTaxesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseGeneralInformationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of taxes [domain]"
       }
      }
     },
     "auth_ref": []
    },
    "country_US": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2024",
     "localname": "US",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementConcentrationsOfCreditRiskConcentrationByCountryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationByLocationDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentDebtSecuritiesConcentrationBySovereignRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "UNITED STATES"
       }
      }
     },
     "auth_ref": []
    },
    "currency_USD": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2024",
     "localname": "USD",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "United States of America, Dollars"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnconsolidatedStructuredEntitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnconsolidatedStructuredEntitiesAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unconsolidated structured entities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r239"
     ]
    },
    "ifrs-full_UnconsolidatedStructuredEntitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnconsolidatedStructuredEntitiesDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unconsolidated structured entities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Unconsolidated structured entities' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r239"
     ]
    },
    "ifrs-full_UnconsolidatedStructuredEntitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnconsolidatedStructuredEntitiesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisOfMainEquitySecuritiesDetails",
      "http://www.grupoaval.com/role/DisclosureUnconsolidatedStructuredEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total for all unconsolidated structured entities [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for unconsolidated structured entities. A structured entity is an entity that has been designed so that voting or similar rights are not the dominant factor in deciding who controls the entity, such as when any voting rights relate to administrative tasks only and the relevant activities are directed by means of contractual arrangements. [Refer: Consolidated [member]]"
       }
      }
     },
     "auth_ref": [
      "r239"
     ]
    },
    "ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnderlyingEquityInstrumentAndDepositaryReceiptsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Underlying equity instrument and depositary receipts [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_UnderlyingEquityInstrumentAndDepositaryReceiptsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnderlyingEquityInstrumentAndDepositaryReceiptsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareAdditionalInformationDetails",
      "http://www.grupoaval.com/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Underlying equity instrument and depositary receipts [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the \u2018Underlying equity instrument and depositary receipts\u2019 axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r590"
     ]
    },
    "ifrs-full_UndiscountedFinanceLeasePaymentsToBeReceived": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UndiscountedFinanceLeasePaymentsToBeReceived",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Undiscounted finance lease payments to be received",
        "verboseLabel": "Total gross rent payments receivable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of undiscounted finance lease payments to be received. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset."
       }
      }
     },
     "auth_ref": [
      "r271"
     ]
    },
    "aval_UndrawnApprovedLoansCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UndrawnApprovedLoansCommitmentsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLiquidityRiskUndiscountedCashFlowsOfCommitmentLoansDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This member stands for undrawn approved loans commitments.",
        "label": "Undrawn approved loans"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_UndrlygSecurityMktPriceChngPct": {
     "xbrltype": "pureItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "UndrlygSecurityMktPriceChngPct",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Underlying Security Market Price Change, Percent",
        "terseLabel": "Underlying Security Market Price Change"
       }
      }
     },
     "auth_ref": [
      "r562"
     ]
    },
    "ifrs-full_UnearnedFinanceIncomeRelatingToFinanceLeasePaymentsReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnearnedFinanceIncomeRelatingToFinanceLeasePaymentsReceivable",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioReconciliationDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unearned finance income relating to finance lease payments receivable",
        "negatedLabel": "Less unrealized financial income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of unearned finance income relating to the finance lease payments receivable. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset. [Refer: Finance income]"
       }
      }
     },
     "auth_ref": [
      "r271"
     ]
    },
    "aval_UnemploymentRatePercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnemploymentRatePercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Unemployment rate, percentage",
        "label": "Unemployment rate, percentage",
        "terseLabel": "Unemployment rate"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UnemploymentRatePercentageOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnemploymentRatePercentageOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Unemployment rate, percentage, one-year projection",
        "label": "Unemployment rate, percentage, one-year projection",
        "terseLabel": "Unemployment rate, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UnfavorableScenarioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnfavorableScenarioMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unfavorable scenario"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnobservableInputsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnobservableInputsAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unobservable inputs [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r243",
      "r625"
     ]
    },
    "ifrs-full_UnobservableInputsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnobservableInputsDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unobservable inputs [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all the unobservable inputs. It also represents the standard value for the 'Unobservable inputs' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r243",
      "r625"
     ]
    },
    "aval_UnrealizedGainsLossesOnSecuritiesAvailableForSaleDeductedFromPrimaryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnrealizedGainsLossesOnSecuritiesAvailableForSaleDeductedFromPrimaryCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TierTwoSecondaryCapital",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Unrealized gains (losses) on securities available for sale deducted from primary capital",
        "label": "Unrealized gains (losses) on securities available for sale deducted from primary capital",
        "terseLabel": "Unrealized gains/losses on securities available for sale"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UnsecuredCreditsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnsecuredCreditsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditPortfolioPerTypeOfGuaranteesReceivedDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unsecured credits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UnusedCreditCardLimitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnusedCreditCardLimitsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused credit card limits"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UnusedLettersOfCreditMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnusedLettersOfCreditMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused letters of credit"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UnusedLimitsOfOverdraftsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UnusedLimitsOfOverdraftsMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementModifiedFinancialAssetsCreditCommitmentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused limits of overdrafts"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnusedProvisionReversedOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnusedProvisionReversedOtherProvisions",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureProvisionsRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused provision reversed, other provisions",
        "negatedLabel": "Provisions reversed during the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount reversed for unused other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r159"
     ]
    },
    "ifrs-full_UnusedTaxCreditsForWhichNoDeferredTaxAssetRecognised": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnusedTaxCreditsForWhichNoDeferredTaxAssetRecognised",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails": {
       "parentTag": "aval_TaxLossCarryForwardsAndExcessOfPresumptiveIncomeNotRecognizedAsDeferredTaxAssets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused tax credits for which no deferred tax asset recognised",
        "terseLabel": "Excess of presumptive income not recognized as deferred tax assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]]"
       }
      }
     },
     "auth_ref": [
      "r71"
     ]
    },
    "ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails": {
       "parentTag": "aval_TaxLossCarryForwardsAndExcessOfPresumptiveIncomeNotRecognizedAsDeferredTaxAssets",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused tax losses for which no deferred tax asset recognised",
        "terseLabel": "Tax loss carry forwards not recognized as deferred tax assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r71"
     ]
    },
    "aval_UponCompanyHavingValidityOfLegalStabilityContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UponCompanyHavingValidityOfLegalStabilityContractMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The scenario under which companies having validity of legal stability contract.",
        "label": "Upon Company Having Validity Of Legal Stability Contract [Member]",
        "terseLabel": "Companies having validity of legal stability contract"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UsedHomePricesPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UsedHomePricesPercentage",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Used home prices, percentage.",
        "label": "Used home prices, percentage",
        "terseLabel": "Used home prices"
       }
      }
     },
     "auth_ref": []
    },
    "aval_UsedHomePricesPercentageOneYearProjection": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "UsedHomePricesPercentageOneYearProjection",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditRiskModelScenarioTablesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Used home prices, percentage, one-year projection",
        "label": "Used home prices, percentage, one-year projection",
        "terseLabel": "Used home prices, one-year projection"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "durationItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesOtherIntangibleAssetsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Useful life measured as period of time, intangible assets other than goodwill",
        "verboseLabel": "Intangible assets estimated useful lives"
       }
      },
      "en": {
       "role": {
        "documentation": "The useful life, measured as period of time, used for intangible assets other than goodwill. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r164"
     ]
    },
    "ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment": {
     "xbrltype": "durationItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Useful life measured as period of time, property, plant and equipment",
        "terseLabel": "Useful lives or depreciation rates, property, plant and equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The useful life, measured as period of time, used for property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r78"
     ]
    },
    "aval_ValoraSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ValoraSaMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEquityTransactionsSubsidiaryTransactionsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Valora S.A. [member]",
        "label": "Valora SA [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ValuationTechniquesUsedInFairValueMeasurementAxis",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation techniques used in fair value measurement [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r243"
     ]
    },
    "ifrs-full_ValuationTechniquesUsedInFairValueMeasurementDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ValuationTechniquesUsedInFairValueMeasurementDomain",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueValuationOfEquityInstrumentsLevel3Details"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation techniques used in fair value measurement [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for valuation techniques used by the entity to measure fair value. It also represents the standard value for the 'Valuation techniques used in fair value measurement' axis if no other member is used. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r243"
     ]
    },
    "ifrs-full_ValueAddedTaxPayables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ValueAddedTaxPayables",
     "crdr": "credit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherLiabilitiesAccountsPayableAndOtherLiabilitiesTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Value added tax payables",
        "terseLabel": "Value added tax - VAT"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of payables related to a value added tax."
       }
      }
     },
     "auth_ref": [
      "r594"
     ]
    },
    "ifrs-full_ValueAtRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "ValueAtRisk",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementInvestmentPriceRiskInEquityInstrumentsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementRegulatoryDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Value at risk",
        "terseLabel": "Regulatory VaR",
        "verboseLabel": "Value"
       }
      },
      "en": {
       "role": {
        "documentation": "The measure of a potential loss exposure as a result of future market movements, based on a specified confidence interval and measurement horizon."
       }
      }
     },
     "auth_ref": [
      "r629"
     ]
    },
    "aval_ValueOfStabilizationReserveDeductedFromSecondaryCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "ValueOfStabilizationReserveDeductedFromSecondaryCapital",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails": {
       "parentTag": "aval_TechnicalRegulatoryCapital",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementMinimumRegulatoryCapitalRequirementsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Value of stabilization reserve deducted from secondary capital",
        "label": "Value of stabilization reserve deducted from secondary capital",
        "negatedLabel": "Value of the stabilization reserve"
       }
      }
     },
     "auth_ref": []
    },
    "aval_VariationInClosingForeignExchangeRate": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "VariationInClosingForeignExchangeRate",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureHedgeAccountingChangesInFluctuationDetails",
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Variation in closing foreign exchange rate",
        "label": "Variation in closing foreign exchange rate",
        "verboseLabel": "Variation"
       }
      }
     },
     "auth_ref": []
    },
    "aval_VehiclesAndComputerEquipmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "VehiclesAndComputerEquipmentMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansFinancialLeasingPortfolioTermsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Vehicles and computer equipment [member]",
        "label": "Vehicles and computer equipment [member]",
        "terseLabel": "Vehicles and computer equipment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_VehiclesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "VehiclesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureBasisOfPreparationOfConsolidatedFinancialStatementsAndSummaryOfMaterialAccountingPoliciesPropertyPlantAndEquipmentForOwnUseDetails",
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleForeclosedAssetsLeasingAgreementsOtherDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Vehicles [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of property, plant and equipment representing vehicles used in the entity's operations, specifically to include aircraft, motor vehicles and ships. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r601"
     ]
    },
    "ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]",
        "terseLabel": "Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year"
       }
      }
     },
     "auth_ref": [
      "r531"
     ]
    },
    "aval_WarehouseExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WarehouseExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails": {
       "parentTag": "ifrs-full_OtherExpenseByNature",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureOtherIncomeAndExpenseOtherExpenseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Warehouse expense",
        "label": "Warehouse expense",
        "negatedLabel": "Warehouse services"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WarehousesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WarehousesMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsRightOfUseAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureTangibleAssetsTangibleAssetsForOwnUseDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Warehouses [member]",
        "label": "Warehouses [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_WeightedAverageCostOfCapitalMeasurementInputMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "WeightedAverageCostOfCapitalMeasurementInputMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueSensitivityAnalysisDetails",
      "http://www.grupoaval.com/role/DisclosureEstimationOfFairValueTextualDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted average cost of capital, measurement input [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the weighted average cost of capital used as a measurement input."
       }
      }
     },
     "auth_ref": [
      "r422",
      "r427"
     ]
    },
    "ifrs-full_WeightedAverageDurationOfDefinedBenefitObligation2019": {
     "xbrltype": "durationItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "WeightedAverageDurationOfDefinedBenefitObligation2019",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEmployeeBenefitsFutureBenefitPaymentsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted average duration of defined benefit obligation"
       }
      },
      "en": {
       "role": {
        "documentation": "The weighted average duration of a defined benefit obligation. [Refer: Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r103"
     ]
    },
    "ifrs-full_WeightedAverageMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "WeightedAverageMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementRiskManagementValueAtRiskTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted average [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an average in which each quantity to be averaged is assigned a weight that determines the relative effect of each quantity on the average."
       }
      }
     },
     "auth_ref": [
      "r253",
      "r276",
      "r425",
      "r427",
      "r630"
     ]
    },
    "aval_WeightedAverageNumberOfCommonAndPreferenceSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WeightedAverageNumberOfCommonAndPreferenceSharesOutstanding",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average number of common and preference shares outstanding",
        "label": "Weighted average number of common and preference shares outstanding",
        "terseLabel": "Weighted average of the common and preferred shares used in the calculation of earnings per basic share (common and preferred)"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_WeightedAverageShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
     "localname": "WeightedAverageShares",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareContinuingOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareDiscontinuedOperationsDetails",
      "http://www.grupoaval.com/role/DisclosureEquityAttributableToOwnersOfParentEarningsPerShareTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted average number of ordinary shares used in calculating basic earnings per share",
        "verboseLabel": "Weighted average number of common shares outstanding used in basic EPS calculation"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor."
       }
      }
     },
     "auth_ref": [
      "r135"
     ]
    },
    "aval_WithRecognizedProvisionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithRecognizedProvisionMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "With recognized provision [member]",
        "label": "With recognized provision [member]",
        "terseLabel": "With recognized provision"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WithdrawalFromLeasebackOperation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithdrawalFromLeasebackOperation",
     "crdr": "credit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureNonCurrentAssetsHeldForSaleRollForwardDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Withdrawal from leaseback operation",
        "label": "Withdrawal from leaseback operation",
        "negatedLabel": "Withdrawals from leaseback operation"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WithholdingTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithholdingTax",
     "crdr": "debit",
     "calculation": {
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxReconciliationBetweenTotalExpensesOfIncomeTaxAndTaxExpenseTabularDisclosureDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Withholding tax",
        "label": "Withholding tax"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WithholdingTaxOverDividends": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithholdingTaxOverDividends",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/StatementConsolidatedStatementsOfChangesInEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Withholding tax over dividends",
        "label": "Withholding tax over dividends",
        "negatedLabel": "Withholding Tax over dividends"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WithholdingsTaxOnDividendsPaidToEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithholdingsTaxOnDividendsPaidToEntities",
     "crdr": "debit",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxWithholdingsTaxOnDividendsPaidBetweenEntitiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Withholdings tax on dividends paid to entities",
        "label": "Withholdings tax on dividends paid to entities",
        "terseLabel": "Withholdings tax on dividends paid to entities"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WithoutExpirationDateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithoutExpirationDateMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureIncomeTaxTaxLossesAndExcessOfPresumptiveIncomeDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Without expiration date [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WithoutGradeOrNotAvailableMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithoutGradeOrNotAvailableMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioDerivativeInstrumentsAssetsDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtAmortizedCostDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioInvestmentsInDebtSecuritiesAtFvociDetails",
      "http://www.grupoaval.com/role/DisclosureRiskManagementCreditQualityOfFinancialAssetsExcludingLoanPortfolioTradingInvestmentsInDebtSecuritiesDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Without grade or not available [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WithoutRecognizedProvisionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WithoutRecognizedProvisionMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureRiskManagementLoansIndividuallyEvaluatedForImpairmentDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Without recognized provision [member]",
        "label": "Without recognized provision [member]",
        "terseLabel": "Without recognized provision"
       }
      }
     },
     "auth_ref": []
    },
    "aval_WorkingCapitalLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.grupoaval.com/20241231",
     "localname": "WorkingCapitalLoansMember",
     "presentation": [
      "http://www.grupoaval.com/role/DisclosureLoansCreditPortfolioDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Working capital loans [member]",
        "terseLabel": "Working capital loans"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2024",
     "localname": "YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]",
        "terseLabel": "Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested"
       }
      }
     },
     "auth_ref": [
      "r529"
     ]
    }
   }
  }
 },
 "std_ref": {
  "r0": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "104",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_104&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r1": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r2": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r3": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r4": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r5": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r6": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r7": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r8": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "107",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_107&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r9": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "125",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_125&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r10": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "137",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_137_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r11": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_35&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r12": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "51",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_51&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r13": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r14": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r15": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r16": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r17": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r18": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r19": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "k",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_k&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r20": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "l",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_l&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r21": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "m",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_m&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r22": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "n",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_n&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r23": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "o",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_o&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r24": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "p",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_p&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r25": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "q",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_q&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r26": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "r",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_r&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r27": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "55",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r28": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "56",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_56&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r29": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "61",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_61_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r30": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "61",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_61_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r31": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "61",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_61&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r32": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r33": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "78",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r34": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "78",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r35": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r36": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r37": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r38": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r39": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r40": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r41": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r42": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "81A",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81A_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r43": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "81A",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81A_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r44": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "81A",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81A_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r45": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "81B",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81B_a_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r46": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "81B",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81B_a_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r47": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "81B",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81B_b_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r48": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "81B",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81B_b_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r49": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r50": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r51": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r52": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r53": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82",
   "Subparagraph": "ea",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_ea&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r54": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r55": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "90",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_90&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r56": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "91",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r57": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "91",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r58": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "91",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r59": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "92",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_92&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r60": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "98",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r61": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "98",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r62": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "98",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r63": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "99",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_99&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r64": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "10",
   "IssueDate": "2024-01-01",
   "Paragraph": "13",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2024-en-r&anchor=para_13&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r65": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "10",
   "IssueDate": "2024-01-01",
   "Paragraph": "21",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2024-en-r&anchor=para_21_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r66": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "10",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IAS10_g17-22_TI",
   "URIDate": "2024-03-27"
  },
  "r67": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_79&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r68": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "ab",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_ab&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r69": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_c_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r70": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_c_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r71": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r72": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r73": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r74": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r75": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r76": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "Subparagraph": "h",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_h_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r77": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IAS12_g79-88_TI",
   "URIDate": "2024-03-27"
  },
  "r78": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "73",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r79": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "73",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r80": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r81": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r82": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "73",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r83": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "74",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_74_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r84": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "75",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_75_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r85": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IAS16_g73-79_TI",
   "URIDate": "2024-03-27"
  },
  "r86": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "138",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_138&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r87": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "140",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_140_a_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r88": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "140",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_140_a_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r89": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "140",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_140_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r90": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r91": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r92": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_c_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r93": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_c_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r94": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_c_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r95": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r96": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r97": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r98": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_g&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r99": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "142",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_142&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r100": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "145",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r101": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "145",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r102": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "147",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_147_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r103": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "147",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_147_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r104": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "148",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_148_d_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r105": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_53&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r106": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2024-01-01",
   "Paragraph": "52",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2024-en-r&anchor=para_52_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r107": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "23",
   "IssueDate": "2024-01-01",
   "Paragraph": "26",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=23&code=ifrs-tx-2024-en-r&anchor=para_26_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r108": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "23",
   "IssueDate": "2024-01-01",
   "Paragraph": "26",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=23&code=ifrs-tx-2024-en-r&anchor=para_26_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r109": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_17_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r110": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_17_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r111": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_17_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r112": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_17&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r113": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "18",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_18&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r114": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "19",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_19_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r115": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "19",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_19_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r116": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "19",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_19_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r117": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "19",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_19_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r118": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Paragraph": "19",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_19&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r119": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2024-01-01",
   "Section": "Disclosures",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IAS24_g13-24_TI",
   "URIDate": "2024-03-27"
  },
  "r120": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2024-01-01",
   "Paragraph": "35",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_a_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r121": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2024-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_b_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r122": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2024-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_b_vi&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r123": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2024-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_b_viii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r124": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2024-01-01",
   "Paragraph": "10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_10&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r125": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r126": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r127": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r128": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r129": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r130": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r131": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_66&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r132": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Paragraph": "67",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_67&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r133": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Paragraph": "68",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_68&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r134": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Paragraph": "70",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_70_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r135": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Paragraph": "70",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_70_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r136": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IAS33_g70-73A_TI",
   "URIDate": "2024-03-27"
  },
  "r137": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "34",
   "IssueDate": "2024-01-01",
   "Paragraph": "16A",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=34&code=ifrs-tx-2024-en-r&anchor=para_16A_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r138": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "126",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_126&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r139": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "130",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r140": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "130",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_d_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r141": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "130",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r142": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "130",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_f_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r143": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "130",
   "Subparagraph": "f",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_f_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r144": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r145": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_d_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r146": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "d",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_d_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r147": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "d",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_d_v&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r148": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "Clause": "iiA",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_e_iiA&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r149": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_e_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r150": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_e_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r151": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_e_v&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r152": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r153": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "134",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r154": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "135",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_135_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r155": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "135",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_135&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r156": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "84",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r157": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "84",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r158": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "84",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r159": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "84",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r160": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "84",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r161": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "86",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_86_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r162": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "86",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_86&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r163": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "88",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_88&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r164": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r165": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r166": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r167": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r168": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_vi&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r169": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_vii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r170": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_viii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r171": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r172": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r173": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_122_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r174": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "122",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_122_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r175": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IAS38_g118-128_TI",
   "URIDate": "2024-03-27"
  },
  "r176": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "39",
   "IssueDate": "2024-01-01",
   "Paragraph": "102",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2024-en-r&anchor=para_102_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r177": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "39",
   "IssueDate": "2024-01-01",
   "Paragraph": "86",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2024-en-r&anchor=para_86_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r178": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "39",
   "IssueDate": "2024-01-01",
   "Paragraph": "86",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2024-en-r&anchor=para_86_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r179": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "32A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_32A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r180": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "75",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_75_f_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r181": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "75",
   "Subparagraph": "f",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_75_f_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r182": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "75",
   "Subparagraph": "f",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_75_f_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r183": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "76",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_76_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r184": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "76",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_76&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r185": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_79_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r186": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_79_d_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r187": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_79_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r188": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2024-01-01",
   "Paragraph": "50",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2024-en-r&anchor=para_50&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r189": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2024-en-r&anchor=para_54_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r190": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_10&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r191": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "18",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_18_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r192": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "25",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r193": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r194": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "31",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_31&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r195": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r196": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "39",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_39&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r197": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "44B",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44B_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r198": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "44H",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44H_b_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r199": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r200": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "50",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_50_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r201": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "29",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2024-en-r&anchor=para_29&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r202": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "30",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2024-en-r&anchor=para_30_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r203": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRIC",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRIC&num=17&code=ifrs-tx-2024-en-r&anchor=para_16_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r204": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRIC",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRIC&num=17&code=ifrs-tx-2024-en-r&anchor=para_17_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r205": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r206": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "24",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_24_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r207": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "30",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_30&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r208": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "32",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_32_a_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r209": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "32",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_32_a_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r210": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "10",
   "IssueDate": "2024-01-01",
   "Paragraph": "22",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=10&code=ifrs-tx-2024-en-r&anchor=para_22&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r211": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "12",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_12_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r212": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "12",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_12_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r213": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "12",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_12_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r214": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "12",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_12_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r215": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "19B",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_19B_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r216": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "19B",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_19B_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r217": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "2",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_2_b_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r218": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "2",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_2_b_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r219": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "2",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_2_b_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r220": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "21",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r221": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "21",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_b_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r222": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "29",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_29_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r223": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "29",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_29_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r224": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "ix",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_ix&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r225": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_v&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r226": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_vi&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r227": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_vii&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r228": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_viii&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r229": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B13",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r230": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B13",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_d&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r231": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B13",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_e&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r232": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B13",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_f&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r233": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B13",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_g&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r234": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B16",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B16_c&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r235": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B16",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B16&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r236": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B4",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B4_a&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r237": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B4",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B4_b&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r238": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B4",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B4_d&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r239": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B4",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B4_e&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r240": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Section": "Nature of the risks associated with an entity's interests in consolidated structured entities",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS12_g14-17_TI",
   "URIDate": "2024-03-27"
  },
  "r241": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r242": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r243": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r244": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r245": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r246": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r247": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r248": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r249": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "h",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r250": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r251": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r252": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS13_g91-99_TI",
   "URIDate": "2024-03-27"
  },
  "r253": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "14",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=14&code=ifrs-tx-2024-en-r&anchor=para_33_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r254": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "113",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_113_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r255": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "114",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_114&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r256": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "115",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_115&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r257": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "120",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_120_b_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r258": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS15_g110-129_TI",
   "URIDate": "2024-03-27"
  },
  "r259": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Section": "Presentation",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS15_g105-109_TI",
   "URIDate": "2024-03-27"
  },
  "r260": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r261": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "47",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r262": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "47",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r263": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r264": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r265": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r266": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_g&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r267": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "Subparagraph": "j",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_j&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r268": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r269": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "90",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_90_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r270": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_93&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r271": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "94",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_94&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r272": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "95",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_95&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r273": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "97",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_97&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r274": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "109",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_109&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r275": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "109A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_109A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r276": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "120",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_120&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r277": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "124",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_124&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r278": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "125",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_125&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r279": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "127",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_127&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r280": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "128",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_128_a_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r281": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "128",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_128_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r282": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "132",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_132_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r283": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "C32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_C32&doctype=Appendix&subtype=C",
   "URIDate": "2024-03-27"
  },
  "r284": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2024-01-01",
   "Paragraph": "45",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r285": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2024-01-01",
   "Paragraph": "B64",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r286": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2024-01-01",
   "Paragraph": "B64",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r287": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2024-01-01",
   "Paragraph": "B67",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_c&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r288": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2024-01-01",
   "Paragraph": "B67",
   "Subparagraph": "d",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d_v&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r289": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2024-01-01",
   "Paragraph": "B67",
   "Subparagraph": "d",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d_vi&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r290": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2024-01-01",
   "Paragraph": "B67",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r291": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2024-01-01",
   "Paragraph": "B67",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r292": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r293": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_b_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r294": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_b_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r295": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r296": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r297": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r298": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "38",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_38&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r299": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Section": "Presentation and disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS05_g30-42_TI",
   "URIDate": "2024-03-27"
  },
  "r300": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "13C",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r301": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "13C",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r302": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "13C",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r303": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "13C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r304": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "14",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_14_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r305": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_a_vii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r306": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_a_viii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r307": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "21C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_21C&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r308": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "22A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_22A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r309": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "23A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_23A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r310": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "23B",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_23B_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r311": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "23B",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_23B_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r312": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24A",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24A_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r313": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24A",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24A_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r314": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24A",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24A_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r315": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r316": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24B",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B_a_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r317": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r318": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24C",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24C_b_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r319": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24C",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24C_b_iv&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r320": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24C&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r321": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24E",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24E_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r322": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "24E",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24E_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r323": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "25",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r324": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "31",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_31&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r325": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r326": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_34&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r327": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35H",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r328": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35H",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H_b_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r329": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35H",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r330": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35H",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r331": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r332": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35K",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35K_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r333": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35K",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35K&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r334": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35M",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r335": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35M",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M_b_iii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r336": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35M",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r337": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35M",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r338": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "36",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_36&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r339": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "42E",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_42E_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r340": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "42I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_42I&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r341": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_6&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r342": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r343": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "8",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r344": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "8",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r345": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "8",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r346": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "8",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_g&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r347": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "8",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_h&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r348": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "8",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r349": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "9",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_9_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r350": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B11E",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11E&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r351": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B2",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B2_a&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r352": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B52",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B52&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r353": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B8E",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B8E&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r354": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Section": "Credit risk",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS07_g35A-38_TI",
   "URIDate": "2024-03-27"
  },
  "r355": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Section": "Defined terms",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&doctype=Appendix&subtype=A&dita_xref=IFRS07_APPA_TI",
   "URIDate": "2024-03-27"
  },
  "r356": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Section": "Hedge accounting",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS07_g21A-24G_TI",
   "URIDate": "2024-03-27"
  },
  "r357": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Section": "Transfers of financial assets",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS07_g42A-42S_TI",
   "URIDate": "2024-03-27"
  },
  "r358": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r359": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r360": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r361": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r362": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_g&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r363": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_h&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r364": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r365": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r366": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r367": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r368": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r369": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r370": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r371": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r372": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_32&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r373": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_33_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r374": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_33_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r375": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r376": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_34&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r377": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=IFRS08_g20-24_TI",
   "URIDate": "2024-03-27"
  },
  "r378": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2024-01-01",
   "Paragraph": "6.5.13",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2024-en-r&anchor=para_6.5.13_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r379": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2024-01-01",
   "Paragraph": "7.2.34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2024-en-r&anchor=para_7.2.34&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r380": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2024-01-01",
   "Paragraph": "7.2.42",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2024-en-r&anchor=para_7.2.42&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r381": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "SIC",
   "Number": "29",
   "IssueDate": "2024-01-01",
   "Paragraph": "6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=SIC&num=29&code=ifrs-tx-2024-en-r&anchor=para_6&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r382": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "SIC",
   "Number": "29",
   "IssueDate": "2024-01-01",
   "Section": "Consensus",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=SIC&num=29&code=ifrs-tx-2024-en-r&doctype=Standard&dita_xref=SIC29_g6-7_TI",
   "URIDate": "2024-03-27"
  },
  "r383": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2025-01-01",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2024-01-01",
   "Paragraph": "A19",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2024-en-r&anchor=para_A19_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r384": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2025-01-01",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2024-01-01",
   "Paragraph": "A19",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2024-en-r&anchor=para_A19_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r385": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expired 2023-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "22",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_22&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r386": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "102",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r387": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "103",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_103&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r388": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "108",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_108&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r389": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "78",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r390": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "78",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r391": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r392": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_IG6&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r393": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "80",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_80_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r394": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "80",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_80_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r395": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "80",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_80_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r396": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "37",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r397": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "37",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r398": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "37",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r399": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "37",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37_h&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r400": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "37",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r401": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "138",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_138_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r402": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "138",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_138_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r403": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "147",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_147_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r404": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2024-01-01",
   "Paragraph": "127",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_127&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r405": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "87",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_87&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r406": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Section": "D Examples: disclosures",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_D_TI",
   "URIDate": "2024-03-27"
  },
  "r407": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Section": "Example 10 A court case",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex10_TI",
   "URIDate": "2024-03-27"
  },
  "r408": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "119",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_119_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r409": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "119",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_119_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r410": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "119",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_119_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r411": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2024-01-01",
   "Paragraph": "43",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2024-en-r&anchor=para_43&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r412": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "14",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_14_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r413": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_16_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r414": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_16_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r415": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_16_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r416": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "44C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44C&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r417": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Section": "A Statement of cash flows for an entity other than a financial institution",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&doctype=Illustrative%20Examples&dita_xref=IAS07_IE_A_TI",
   "URIDate": "2024-03-27"
  },
  "r418": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Section": "C Reconciliation of liabilities arising from financing activities",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&doctype=Illustrative%20Examples&dita_xref=IAS07_IE_C_TI",
   "URIDate": "2024-03-27"
  },
  "r419": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B10",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r420": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "B23",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B23_c&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r421": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "62",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_62&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r422": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r423": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "94",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_94&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r424": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "B5",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_B5&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r425": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "B6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_B6&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r426": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "IE60",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_IE60&doctype=Illustrative%20Examples",
   "URIDate": "2024-03-27"
  },
  "r427": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "IE63",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_IE63&doctype=Illustrative%20Examples",
   "URIDate": "2024-03-27"
  },
  "r428": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "B89",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_B89_a&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r429": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "B89",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_B89_b&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r430": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "B89",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_B89_c&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r431": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2024-01-01",
   "Paragraph": "B89",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_B89_f&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r432": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "53",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r433": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "113",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_113_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r434": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "96",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_96_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r435": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2024-01-01",
   "Paragraph": "96",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_96_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r436": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r437": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Section": "Example 11",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&doctype=Implementation%20Guidance&dita_xref=IFRS05_ex11_TI",
   "URIDate": "2024-03-27"
  },
  "r438": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "13C",
   "Subparagraph": "d",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C_d_i&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r439": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "13C",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C_d_ii&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r440": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_32&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r441": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35H",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r442": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35I",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r443": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35I",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r444": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r445": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35M",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r446": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "35N",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35N&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r447": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "40",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_40_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r448": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_6&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r449": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B11",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11_a&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r450": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B11",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11_b&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r451": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B11",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11_c&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r452": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B11",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11_d&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r453": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B11",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r454": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B11D",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11D_e&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r455": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B35",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B35_a&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r456": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B35",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B35_b&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r457": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B35",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B35_d&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r458": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B35",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B35_e&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r459": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B35",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B35_f&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r460": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B35",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B35_g&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r461": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "B35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B35&doctype=Appendix&subtype=B",
   "URIDate": "2024-03-27"
  },
  "r462": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG20B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG20B&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r463": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG20C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG20C&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r464": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG20D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r465": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG31A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG31A&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r466": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG32&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r467": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG40B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG40B&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r468": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG40D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG40D&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r469": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "23",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r470": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r471": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r472": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG4",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_IG4&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r473": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12"
  },
  "r474": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b"
  },
  "r475": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r476": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r477": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "15",
   "Subsection": "d-3"
  },
  "r478": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 10-K",
   "Number": "249",
   "Section": "310"
  },
  "r479": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Number": "249",
   "Section": "220",
   "Subsection": "f"
  },
  "r480": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16",
   "Subsection": "J",
   "Paragraph": "a"
  },
  "r481": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K"
  },
  "r482": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1"
  },
  "r483": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r484": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r485": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r486": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "2"
  },
  "r487": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "1"
  },
  "r488": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2"
  },
  "r489": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "i"
  },
  "r490": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "ii"
  },
  "r491": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "iii"
  },
  "r492": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1"
  },
  "r493": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r494": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "A"
  },
  "r495": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "B"
  },
  "r496": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "C"
  },
  "r497": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "D"
  },
  "r498": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "E"
  },
  "r499": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r500": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r501": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "2"
  },
  "r502": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Number": "249",
   "Section": "240",
   "Subsection": "f"
  },
  "r503": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a"
  },
  "r504": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1"
  },
  "r505": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "i"
  },
  "r506": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "ii"
  },
  "r507": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iii"
  },
  "r508": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iv"
  },
  "r509": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "v"
  },
  "r510": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "2"
  },
  "r511": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "3"
  },
  "r512": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "b"
  },
  "r513": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a"
  },
  "r514": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1"
  },
  "r515": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "i"
  },
  "r516": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "ii"
  },
  "r517": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iii"
  },
  "r518": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iv"
  },
  "r519": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "v"
  },
  "r520": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "2"
  },
  "r521": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "3"
  },
  "r522": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "b"
  },
  "r523": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Forms 10-K, 10-Q, 20-F",
   "Number": "240",
   "Section": "13",
   "Subsection": "a-1"
  },
  "r524": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v"
  },
  "r525": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "1"
  },
  "r526": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "ii"
  },
  "r527": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii"
  },
  "r528": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Subclause": "ii"
  },
  "r529": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "i"
  },
  "r530": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "ii"
  },
  "r531": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "iii"
  },
  "r532": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "iv"
  },
  "r533": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "v"
  },
  "r534": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "vi"
  },
  "r535": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iv"
  },
  "r536": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "vi"
  },
  "r537": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "3"
  },
  "r538": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "4"
  },
  "r539": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "i"
  },
  "r540": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "ii"
  },
  "r541": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "iii"
  },
  "r542": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "iv"
  },
  "r543": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "6"
  },
  "r544": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "6",
   "Subparagraph": "i"
  },
  "r545": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w"
  },
  "r546": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1"
  },
  "r547": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r548": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "A"
  },
  "r549": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "B"
  },
  "r550": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "C"
  },
  "r551": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "D"
  },
  "r552": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "E"
  },
  "r553": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r554": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r555": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "2"
  },
  "r556": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "1"
  },
  "r557": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2"
  },
  "r558": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "A"
  },
  "r559": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "C"
  },
  "r560": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "D"
  },
  "r561": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "E"
  },
  "r562": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "F"
  },
  "r563": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a"
  },
  "r564": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "1"
  },
  "r565": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "A"
  },
  "r566": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "B"
  },
  "r567": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "C"
  },
  "r568": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "D"
  },
  "r569": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "b",
   "Paragraph": "1"
  },
  "r570": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106"
  },
  "r571": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1"
  },
  "r572": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r573": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r574": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r575": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "2"
  },
  "r576": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "1"
  },
  "r577": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2"
  },
  "r578": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "i"
  },
  "r579": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "ii"
  },
  "r580": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "iii"
  },
  "r581": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Number": "229",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1"
  },
  "r582": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "A",
   "Number": "229"
  },
  "r583": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Number": "229"
  },
  "r584": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Subclause": "i",
   "Number": "229"
  },
  "r585": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-T",
   "Number": "232",
   "Section": "405"
  },
  "r586": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Securities Act",
   "Number": "230",
   "Section": "405"
  },
  "r587": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "10",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_10_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r588": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r589": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "108",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_108&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r590": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "112",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r591": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "117",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_117&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r592": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r593": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "55",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r594": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "78",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r595": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r596": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "82A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82A&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r597": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "85",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r598": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2024-01-01",
   "Paragraph": "IG6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_IG6&doctype=Implementation%20Guidance",
   "URIDate": "2024-03-27"
  },
  "r599": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "80",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_80&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r600": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2024-01-01",
   "Paragraph": "81",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r601": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "37",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_37&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r602": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "73",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r603": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2024-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r604": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "135",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_135_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r605": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r606": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "144",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_144&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r607": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "145",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r608": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2024-01-01",
   "Paragraph": "5",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_5&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r609": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Paragraph": "70",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_70_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r610": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2024-01-01",
   "Paragraph": "A14",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_A14&doctype=Appendix&subtype=A",
   "URIDate": "2024-03-27"
  },
  "r611": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2024-01-01",
   "Paragraph": "84",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r612": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r613": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r614": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2024-01-01",
   "Paragraph": "119",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_119&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r615": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2024-01-01",
   "Paragraph": "79",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_79_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r616": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2024-01-01",
   "Paragraph": "54",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2024-en-r&anchor=para_54_f&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r617": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "14",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_14&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r618": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "16",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_16&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r619": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "17",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_17&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r620": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_a&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r621": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "20",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_b&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r622": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "20",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r623": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r624": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_d&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r625": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2024-01-01",
   "Paragraph": "93",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r626": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "33",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_c&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r627": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2024-01-01",
   "Paragraph": "38",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_38&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r628": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "39",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_39&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r629": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "41",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_41&doctype=Standard",
   "URIDate": "2024-03-27"
  },
  "r630": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2024-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard",
   "URIDate": "2024-03-27"
  }
 }
}
