{
 "instance": {
  "home-20200519x10k.htm": {
   "axisCustom": 0,
   "axisStandard": 26,
   "contextCount": 209,
   "dts": {
    "calculationLink": {
     "local": [
      "home-20200519_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "home-20200519_def.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-eedm-def-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-eedm1-def-2019-01-31.xml"
     ]
    },
    "inline": {
     "local": [
      "home-20200519x10k.htm"
     ]
    },
    "labelLink": {
     "local": [
      "home-20200519_lab.xml"
     ],
     "remote": [
      "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-doc-2019-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "home-20200519_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-ref-2019-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "home-20200519.xsd"
     ],
     "remote": [
      "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",
      "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd",
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-roles-2019-01-31.xsd",
      "https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-parts-codification-2019-01-31.xsd"
     ]
    }
   },
   "elementCount": 643,
   "entityCount": 1,
   "hidden": {
    "http://fasb.org/us-gaap/2019-01-31": 16,
    "http://www.athome.com/20200519": 5,
    "http://xbrl.sec.gov/dei/2019-01-31": 5,
    "total": 26
   },
   "keyCustom": 77,
   "keyStandard": 416,
   "memberCustom": 29,
   "memberStandard": 35,
   "nsprefix": "home",
   "nsuri": "http://www.athome.com/20200519",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "true",
     "longName": "00090 - Document - Document and Entity Information",
     "role": "http://www.athome.com/role/DocumentDocumentAndEntityInformation",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R10": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SaleLeasebackTransactionDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10301 - Disclosure - Sale-Leaseback Transactions",
     "role": "http://www.athome.com/role/DisclosureSaleLeasebackTransactions",
     "shortName": "Sale-Leaseback Transactions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SaleLeasebackTransactionDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R11": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10401 - Disclosure - Accrued Liabilities",
     "role": "http://www.athome.com/role/DisclosureAccruedLiabilities",
     "shortName": "Accrued Liabilities",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R12": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10501 - Disclosure - Revolving Line of Credit",
     "role": "http://www.athome.com/role/DisclosureRevolvingLineOfCredit",
     "shortName": "Revolving Line of Credit",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R13": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10601 - Disclosure - Long-Term Debt",
     "role": "http://www.athome.com/role/DisclosureLongTermDebt",
     "shortName": "Long-Term Debt",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R14": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10701 - Disclosure - Related Party Transactions",
     "role": "http://www.athome.com/role/DisclosureRelatedPartyTransactions",
     "shortName": "Related Party Transactions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R15": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10801 - Disclosure - Revenue Recognition",
     "role": "http://www.athome.com/role/DisclosureRevenueRecognition",
     "shortName": "Revenue Recognition",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R16": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10901 - Disclosure - Income Taxes",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxes",
     "shortName": "Income Taxes",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R17": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11001 - Disclosure - Commitments and Contingencies",
     "role": "http://www.athome.com/role/DisclosureCommitmentsAndContingencies",
     "shortName": "Commitments and Contingencies",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R18": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CompensationAndEmployeeBenefitPlansTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11101 - Disclosure - Employee Benefit Plan",
     "role": "http://www.athome.com/role/DisclosureEmployeeBenefitPlan",
     "shortName": "Employee Benefit Plan",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CompensationAndEmployeeBenefitPlansTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R19": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11201 - Disclosure - Capital Stock",
     "role": "http://www.athome.com/role/DisclosureCapitalStock",
     "shortName": "Capital Stock",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R2": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00100 - Statement - Condensed Consolidated Balance Sheets",
     "role": "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets",
     "shortName": "Condensed Consolidated Balance Sheets",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:InventoryNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R20": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11301 - Disclosure - Earnings Per Share",
     "role": "http://www.athome.com/role/DisclosureEarningsPerShare",
     "shortName": "Earnings Per Share",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R21": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11401 - Disclosure - Stock-Based Compensation",
     "role": "http://www.athome.com/role/DisclosureStockBasedCompensation",
     "shortName": "Stock-Based Compensation",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R22": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:QuarterlyFinancialInformationTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11501 - Disclosure - Quarterly Results of Operations (Unaudited)",
     "role": "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnaudited",
     "shortName": "Quarterly Results of Operations (Unaudited)",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:QuarterlyFinancialInformationTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R23": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SubsequentEventsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11601 - Disclosure - Subsequent Events",
     "role": "http://www.athome.com/role/DisclosureSubsequentEvents",
     "shortName": "Subsequent Events",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SubsequentEventsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R24": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "11701 - Disclosure - Schedule I - Condensed Financial Information of Registrant",
     "role": "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrant",
     "shortName": "Schedule I - Condensed Financial Information of Registrant",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R25": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "20102 - Disclosure - Summary of Significant Accounting Policies (Policies)",
     "role": "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies",
     "shortName": "Summary of Significant Accounting Policies (Policies)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R26": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30103 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Tables)",
     "role": "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesTables",
     "shortName": "Nature of Operations and Summary of Significant Accounting Policies (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R27": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30203 - Disclosure - Property and Equipment (Tables)",
     "role": "http://www.athome.com/role/DisclosurePropertyAndEquipmentTables",
     "shortName": "Property and Equipment (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R28": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30403 - Disclosure - Accrued Liabilities (Tables)",
     "role": "http://www.athome.com/role/DisclosureAccruedLiabilitiesTables",
     "shortName": "Accrued Liabilities (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R29": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30603 - Disclosure - Long-Term Debt (Tables)",
     "role": "http://www.athome.com/role/DisclosureLongTermDebtTables",
     "shortName": "Long-Term Debt (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R3": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:CommonStockParOrStatedValuePerShare",
      "reportCount": 1,
      "unitRef": "Unit_Divide_USD_shares_sEYp3XMOtUmm-gA3lGp4pg",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00105 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)",
     "role": "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical",
     "shortName": "Condensed Consolidated Balance Sheets (Parenthetical)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": null
    },
    "R30": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:RevenueFromContractWithCustomerTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisaggregationOfRevenueTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30803 - Disclosure - Revenue Recognition (Tables)",
     "role": "http://www.athome.com/role/DisclosureRevenueRecognitionTables",
     "shortName": "Revenue Recognition (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:RevenueFromContractWithCustomerTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisaggregationOfRevenueTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R31": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:IncomeTaxDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "30903 - Disclosure - Income Taxes (Tables)",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxesTables",
     "shortName": "Income Taxes (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:IncomeTaxDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R32": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfSaleLeasebackTransactionsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31003 - Disclosure - Commitments and Contingencies (Tables)",
     "role": "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesTables",
     "shortName": "Commitments and Contingencies (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfSaleLeasebackTransactionsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R33": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31303 - Disclosure - Earnings Per Share (Tables)",
     "role": "http://www.athome.com/role/DisclosureEarningsPerShareTables",
     "shortName": "Earnings Per Share (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R34": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31403 - Disclosure - Stock-Based Compensation (Tables)",
     "role": "http://www.athome.com/role/DisclosureStockBasedCompensationTables",
     "shortName": "Stock-Based Compensation (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R35": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "31503 - Disclosure - Quarterly Results of Operations (Unaudited) (Tables)",
     "role": "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedTables",
     "shortName": "Quarterly Results of Operations (Unaudited) (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R36": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:BasisOfAccountingPolicyPolicyTextBlock",
       "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:NumberOfStores",
      "reportCount": 1,
      "unitRef": "Unit_Standard_store_cFldX7bh_0GD1KIF6jSopA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40101 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Details)",
     "role": "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
     "shortName": "Nature of Operations and Summary of Significant Accounting Policies (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:SegmentReportingPolicyPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "INF",
      "lang": null,
      "name": "us-gaap:NumberOfOperatingSegments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_segment_u1wg59Azc0qj9Bp4raXrSQ",
      "xsiNil": "false"
     }
    },
    "R37": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40102 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details)",
     "role": "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesReconciliationOfCashCashEquivalentsAndRestrictedCashDetails",
     "shortName": "Nature of Operations and Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_30_2016_FgkXp9UuSEGN3hiwJyap4g",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R38": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:PropertyPlantAndEquipmentTextBlock",
       "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:PropertyPlantAndEquipmentGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40201 - Disclosure - Property and Equipment (Details)",
     "role": "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails",
     "shortName": "Property and Equipment (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:PropertyPlantAndEquipmentTextBlock",
       "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:PropertyPlantAndEquipmentGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R39": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:SaleLeasebackTransactionDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_9_1_2019_To_9_30_2019_6w2qoj30JEmtbTUQtH92eA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "home:NumberOfPropertiesSold",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_property_XqYs0T33OEiSfy26qPVwTw",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40301 - Disclosure - Sale-Leaseback Transactions (Details)",
     "role": "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails",
     "shortName": "Sale-Leaseback Transactions (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:SaleLeasebackTransactionDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_9_1_2019_To_9_30_2019_6w2qoj30JEmtbTUQtH92eA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "home:NumberOfPropertiesSold",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_property_XqYs0T33OEiSfy26qPVwTw",
      "xsiNil": "false"
     }
    },
    "R4": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00200 - Statement - Condensed Consolidated Statements of Operations",
     "role": "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations",
     "shortName": "Condensed Consolidated Statements of Operations",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:OperatingExpenses",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R40": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "home:AccruedInventoryInTransitCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40401 - Disclosure - Accrued Liabilities (Details)",
     "role": "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails",
     "shortName": "Accrued Liabilities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "home:AccruedInventoryInTransitCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R41": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LinesOfCreditCurrent",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40501 - Disclosure - Revolving Line of Credit (Details)",
     "role": "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
     "shortName": "Revolving Line of Credit (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:DebtDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_6_1_2019_To_6_30_2019_us-gaap_CreditFacilityAxis_us-gaap_RevolvingCreditFacilityMember__X5m4fIc6kqq5ovEns1r-A",
      "decimals": "-5",
      "lang": null,
      "name": "us-gaap:LineOfCreditFacilityIncreaseDecreaseForPeriodNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R42": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentCarryingAmount",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40601 - Disclosure - Long-Term Debt - Summary (Details)",
     "role": "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails",
     "shortName": "Long-Term Debt - Summary (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "lang": null,
      "name": "home:LongTermDebtCurrentGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R43": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_6_5_2015_us-gaap_LienCategoryAxis_us-gaap_SeniorLienMember_us-gaap_LongtermDebtTypeAxis_home_TermLoanFacilityMember_v6RcAfvzpECoqHbUq5sNMQ",
      "decimals": "-5",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentFaceAmount",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40602 - Disclosure - Long-Term Debt - First Lien and Second Lien Agreement (Details)",
     "role": "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
     "shortName": "Long-Term Debt - First Lien and Second Lien Agreement (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R44": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40603 - Disclosure - Long-Term Debt - Maturities (Details)",
     "role": "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails",
     "shortName": "Long-Term Debt - Maturities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R45": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentCarryingAmount",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40604 - Disclosure - Long-Term Debt - Senior Notes (Details)",
     "role": "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
     "shortName": "Long-Term Debt - Senior Notes (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-5",
      "lang": null,
      "name": "us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R46": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember_8IH7dX59s026cL5b-0F2wQ",
      "decimals": "-5",
      "first": true,
      "lang": null,
      "name": "us-gaap:RelatedPartyTransactionAmountsOfTransaction",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40701 - Disclosure - Related Party Transactions (Details)",
     "role": "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails",
     "shortName": "Related Party Transactions (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember_8IH7dX59s026cL5b-0F2wQ",
      "decimals": "-5",
      "first": true,
      "lang": null,
      "name": "us-gaap:RelatedPartyTransactionAmountsOfTransaction",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R47": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:RevenueFromContractWithCustomerTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:NumberOfReportableSegments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40801 - Disclosure - Revenue Recognition - Disaggregation of revenue (Details)",
     "role": "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails",
     "shortName": "Revenue Recognition - Disaggregation of revenue (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:RevenueFromContractWithCustomerTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:NumberOfReportableSegments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R48": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_10_27_2019_To_1_25_2020_eBnjNBX2VUSS3p5UY7Q1ug",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40802 - Disclosure - Revenue Recognition - Narratives (Details)",
     "role": "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails",
     "shortName": "Revenue Recognition - Narratives (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:RevenueFromContractWithCustomerTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_srt_ProductOrServiceAxis_home_GiftCardRedemptionMember_jJ_bfNj2yU-O-vljQKFMkQ",
      "decimals": "-5",
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R49": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "us-gaap:IncomeTaxDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CurrentFederalTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40901 - Disclosure - Income Taxes - Provision (Details)",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails",
     "shortName": "Income Taxes - Provision (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "us-gaap:IncomeTaxDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CurrentFederalTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R5": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_28_2017_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_YfgV0cyKv0mp0Wa2mMR3Xg",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:StockholdersEquity",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00300 - Statement - Condensed Consolidated Statements of Shareholders' Equity",
     "role": "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity",
     "shortName": "Condensed Consolidated Statements of Shareholders' Equity",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_28_2017_us-gaap_StatementEquityComponentsAxis_us-gaap_CommonStockMember_YfgV0cyKv0mp0Wa2mMR3Xg",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:StockholdersEquity",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R50": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:IncomeTaxPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unitRef": "Unit_Standard_pure_901bmjflv0K0U2m0e_ll-g",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40902 - Disclosure - Income Taxes - Tax Cuts and Jobs Act (Benefit) (Details)",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
     "shortName": "Income Taxes - Tax Cuts and Jobs Act (Benefit) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R51": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:IncomeTaxDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsInventory",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40903 - Disclosure - Income Taxes - Deferred Tax Assets And Liabilities (Details)",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails",
     "shortName": "Income Taxes - Deferred Tax Assets And Liabilities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:IncomeTaxDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsInventory",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R52": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsValuationAllowance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40904 - Disclosure - Income Taxes - Additional Information (Details)",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails",
     "shortName": "Income Taxes - Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsValuationAllowance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R53": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40905 - Disclosure - Income Taxes - Federal Statutory Tax Rate (Details)",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails",
     "shortName": "Income Taxes - Federal Statutory Tax Rate (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R54": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_26_2019_4PuquB2TfkqoqJccdlQv7Q",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:UnrecognizedTaxBenefits",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "40906 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details)",
     "role": "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails",
     "shortName": "Income Taxes - Unrecognized Tax Benefits (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-5",
      "lang": null,
      "name": "us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R55": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_10_31_2018_O7XOZUfX90KdGtcSE-ckJA",
      "decimals": "-5",
      "first": true,
      "lang": null,
      "name": "us-gaap:SaleLeasebackTransactionDeferredGainNet",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41001 - Disclosure - Commitments and Contingencies - Derecognition (Details)",
     "role": "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
     "shortName": "Commitments and Contingencies - Derecognition (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfSaleLeasebackTransactionsTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_27_2019_srt_RestatementAxis_srt_RestatementAdjustmentMember_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_us-gaap_AccountingStandardsUpdate201602Member_us-gaap_BalanceSheetLocationAxis_us-gaap_DeferredLeaseRevenueMember_pbTjFYVL_EKO7UZBdoOoQA",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:SaleLeasebackTransactionDeferredGainNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R56": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RetainedEarningsAccumulatedDeficit",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41002 - Disclosure - Commitments and Contingencies (Details)",
     "role": "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
     "shortName": "Commitments and Contingencies (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "lang": null,
      "name": "home:NumberOfRealEstateLeasesForStoreProperties",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_lease_x7SdldLVrEWgHccm_TSsyw",
      "xsiNil": "false"
     }
    },
    "R57": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "home:LeaseLiabilityMaturityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41003 - Disclosure - Commitments and Contingencies - Maturities of lease liabilities (Details)",
     "role": "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails",
     "shortName": "Commitments and Contingencies - Maturities of lease liabilities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "home:LeaseLiabilityMaturityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R58": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:CompensationAndEmployeeBenefitPlansTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_10_1_2014_To_10_1_2014_hpMk_3_KdEezwU4jY538Lw",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "home:DeferredCompensationArrangementWithIndividualAgeLimit",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41101 - Disclosure - Employee Benefit Plan (Details)",
     "role": "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails",
     "shortName": "Employee Benefit Plan (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:CompensationAndEmployeeBenefitPlansTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_10_1_2014_To_10_1_2014_hpMk_3_KdEezwU4jY538Lw",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "home:DeferredCompensationArrangementWithIndividualAgeLimit",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R59": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:CommonStockSharesAuthorized",
      "reportCount": 1,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41201 - Disclosure - Capital Stock (Details)",
     "role": "http://www.athome.com/role/DisclosureCapitalStockDetails",
     "shortName": "Capital Stock (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "lang": null,
      "name": "us-gaap:PreferredStockSharesAuthorized",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     }
    },
    "R6": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:IncomeTaxDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsGross",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00305 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Parenthetical)",
     "role": "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquityParenthetical",
     "shortName": "Condensed Consolidated Statements of Shareholders' Equity (Parenthetical)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": null
    },
    "R60": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_10_27_2019_To_1_25_2020_eBnjNBX2VUSS3p5UY7Q1ug",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetIncomeLoss",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41301 - Disclosure - Earnings Per Share (Details)",
     "role": "http://www.athome.com/role/DisclosureEarningsPerShareDetails",
     "shortName": "Earnings Per Share (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "0",
      "lang": null,
      "name": "us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     }
    },
    "R61": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_28_2018_To_1_26_2019_y9JgYKAHg02FNpVxemX8hQ",
      "decimals": "0",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements",
      "reportCount": 1,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41302 - Disclosure - Earnings Per Share - Additional Information (Details)",
     "role": "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails",
     "shortName": "Earnings Per Share - Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_us-gaap_EmployeeStockOptionMember_Ujz80wOx2UKMz-0eUDI2yQ",
      "decimals": "INF",
      "lang": null,
      "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     }
    },
    "R62": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "home:NumberOfEquityCompensationPlans",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_plan_julMM571-EeQsn6yjlebJQ",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41401 - Disclosure - Stock-Based Compensation (Details)",
     "role": "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
     "shortName": "Stock-Based Compensation (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "home:NumberOfEquityCompensationPlans",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_plan_julMM571-EeQsn6yjlebJQ",
      "xsiNil": "false"
     }
    },
    "R63": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_us-gaap_PlanNameAxis_home_EquityPlan2016Member_HOl42bK4MEeIfWVBMXeSUg",
      "decimals": "3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_pure_901bmjflv0K0U2m0e_ll-g",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41402 - Disclosure - Stock-Based Compensation - Assumptions (Details)",
     "role": "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails",
     "shortName": "Stock-Based Compensation - Assumptions (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_us-gaap_PlanNameAxis_home_EquityPlan2016Member_HOl42bK4MEeIfWVBMXeSUg",
      "decimals": "3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_pure_901bmjflv0K0U2m0e_ll-g",
      "xsiNil": "false"
     }
    },
    "R64": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_26_2019_us-gaap_PlanNameAxis_home_EquityPlan2016Member_imYNELJsdU6kAU2C8bAXlw",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41403 - Disclosure - Stock-Based Compensation - Activity (Details)",
     "role": "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
     "shortName": "Stock-Based Compensation - Activity (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_26_2019_us-gaap_PlanNameAxis_home_EquityPlan2016Member_imYNELJsdU6kAU2C8bAXlw",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     }
    },
    "R65": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_us-gaap_PlanNameAxis_home_EquityPlan2016Member_HOl42bK4MEeIfWVBMXeSUg",
      "decimals": "-5",
      "first": true,
      "lang": null,
      "name": "us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41404 - Disclosure - Stock-Based Compensation - Fair value options (Details)",
     "role": "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails",
     "shortName": "Stock-Based Compensation - Fair value options (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_us-gaap_PlanNameAxis_home_EquityPlan2016Member_HOl42bK4MEeIfWVBMXeSUg",
      "decimals": "-5",
      "first": true,
      "lang": null,
      "name": "us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R66": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_26_2019_4PuquB2TfkqoqJccdlQv7Q",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41405 - Disclosure - Stock-Based Compensation - Restricted Stock (Details)",
     "role": "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails",
     "shortName": "Stock-Based Compensation - Restricted Stock (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_26_2019_4PuquB2TfkqoqJccdlQv7Q",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_shares_QhTX6wAur0CYaBOBu6rUkg",
      "xsiNil": "false"
     }
    },
    "R67": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_10_27_2019_To_1_25_2020_eBnjNBX2VUSS3p5UY7Q1ug",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41501 - Disclosure - Quarterly Results of Operations (Unaudited) (Details)",
     "role": "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
     "shortName": "Quarterly Results of Operations (Unaudited) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R68": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "us-gaap:SubsequentEventsTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_5_19_2020_us-gaap_SubsequentEventTypeAxis_us-gaap_SubsequentEventMember_oCguPsfogU-bodl0DhWuwQ",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "home:PercentageOfStoresClosedDueToEconomicFactors",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_pure_901bmjflv0K0U2m0e_ll-g",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41601 - Disclosure - Subsequent Events (Details)",
     "role": "http://www.athome.com/role/DisclosureSubsequentEventsDetails",
     "shortName": "Subsequent Events (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "us-gaap:SubsequentEventsTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_5_19_2020_us-gaap_SubsequentEventTypeAxis_us-gaap_SubsequentEventMember_oCguPsfogU-bodl0DhWuwQ",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "home:PercentageOfStoresClosedDueToEconomicFactors",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_pure_901bmjflv0K0U2m0e_ll-g",
      "xsiNil": "false"
     }
    },
    "R69": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:OtherAssetsCurrent",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41701 - Disclosure - Schedule I - Condensed Financial Information of Registrant (Condensed Balance Sheets) (Details)",
     "role": "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
     "shortName": "Schedule I - Condensed Financial Information of Registrant (Condensed Balance Sheets) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember_B3cjTUM5uka2yUrsBd9-xA",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:OtherAssetsCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R7": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProfitLoss",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "00400 - Statement - Condensed Consolidated Statements of Cash Flows",
     "role": "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows",
     "shortName": "Condensed Consolidated Statements of Cash Flows",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProfitLoss",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R70": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_ABJUpXNuUkG24QKp0esWEA",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:CommonStockParOrStatedValuePerShare",
      "reportCount": 1,
      "unitRef": "Unit_Divide_USD_shares_sEYp3XMOtUmm-gA3lGp4pg",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41702 - Disclosure - Schedule I - Condensed Financial Information of Registrant (Parenthetical) (Details)",
     "role": "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails",
     "shortName": "Schedule I - Condensed Financial Information of Registrant (Parenthetical) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "As_Of_1_25_2020_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember_B3cjTUM5uka2yUrsBd9-xA",
      "decimals": "INF",
      "lang": null,
      "name": "us-gaap:CommonStockParOrStatedValuePerShare",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Divide_USD_shares_sEYp3XMOtUmm-gA3lGp4pg",
      "xsiNil": "false"
     }
    },
    "R71": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_10_27_2019_To_1_25_2020_eBnjNBX2VUSS3p5UY7Q1ug",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41703 - Disclosure - Schedule I - Condensed Financial Information of Registrant (Condensed Statements of Operations) (Details)",
     "role": "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
     "shortName": "Schedule I - Condensed Financial Information of Registrant (Condensed Statements of Operations) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember_SXAypHTBqEGtuRJA9aV9mw",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:IncomeLossFromEquityMethodInvestments",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R72": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities",
      "reportCount": 1,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "41704 - Disclosure - Schedule I - Condensed Financial Information of Registrant (Notes to Condensed Financial Statements) (Details)",
     "role": "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
     "shortName": "Schedule I - Condensed Financial Information of Registrant (Notes to Condensed Financial Statements) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "ix:continuation",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_srt_ConsolidatedEntitiesAxis_srt_ParentCompanyMember_SXAypHTBqEGtuRJA9aV9mw",
      "decimals": "-5",
      "lang": null,
      "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Standard_USD_rXhM3IzdeEm4IjdXrXTWXA",
      "xsiNil": "false"
     }
    },
    "R8": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10101 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies",
     "role": "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPolicies",
     "shortName": "Nature of Operations and Summary of Significant Accounting Policies",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R9": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "10201 - Disclosure - Property and Equipment",
     "role": "http://www.athome.com/role/DisclosurePropertyAndEquipment",
     "shortName": "Property and Equipment",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "home-20200519x10k.htm",
      "contextRef": "Duration_1_27_2019_To_1_25_2020_VCiYtZhxuk-g7gr2GHOEaA",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 67,
   "tag": {
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_CityAreaCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Area code of city",
        "label": "City Area Code"
       }
      }
     },
     "localname": "CityAreaCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_CurrentFiscalYearEndDate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "End date of current fiscal year in the format --MM-DD.",
        "label": "Current Fiscal Year End Date"
       }
      }
     },
     "localname": "CurrentFiscalYearEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "gMonthDayItemType"
    },
    "dei_DocumentAnnualReport": {
     "auth_ref": [
      "r403"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as an annual report.",
        "label": "Document Annual Report"
       }
      }
     },
     "localname": "DocumentAnnualReport",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentFiscalPeriodFocus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Document Fiscal Period Focus"
       }
      }
     },
     "localname": "DocumentFiscalPeriodFocus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "fiscalPeriodItemType"
    },
    "dei_DocumentFiscalYearFocus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This is focus fiscal year of the document report in CCYY 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.",
        "label": "Document Fiscal Year Focus"
       }
      }
     },
     "localname": "DocumentFiscalYearFocus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "gYearItemType"
    },
    "dei_DocumentPeriodEndDate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.",
        "label": "Document Period End Date"
       }
      }
     },
     "localname": "DocumentPeriodEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentTransitionReport": {
     "auth_ref": [
      "r402"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as a transition report.",
        "label": "Document Transition Report"
       }
      }
     },
     "localname": "DocumentTransitionReport",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentType": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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'.",
        "label": "Document Type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityAddressAddressLine1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name",
        "label": "Entity Address, Address Line One"
       }
      }
     },
     "localname": "EntityAddressAddressLine1",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressCityOrTown": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the City or Town",
        "label": "Entity Address, City or Town"
       }
      }
     },
     "localname": "EntityAddressCityOrTown",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressPostalZipCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Code for the postal or zip code",
        "label": "Entity Address, Postal Zip Code"
       }
      }
     },
     "localname": "EntityAddressPostalZipCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressStateOrProvince": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the state or province.",
        "label": "Entity Address, State or Province"
       }
      }
     },
     "localname": "EntityAddressStateOrProvince",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stateOrProvinceItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.",
        "label": "Entity Central Index Key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityCommonStockSharesOutstanding": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Entity Common Stock, Shares Outstanding"
       }
      }
     },
     "localname": "EntityCommonStockSharesOutstanding",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "sharesItemType"
    },
    "dei_EntityCurrentReportingStatus": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Entity Current Reporting Status"
       }
      }
     },
     "localname": "EntityCurrentReportingStatus",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFileNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Entity File Number"
       }
      }
     },
     "localname": "EntityFileNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "fileNumberItemType"
    },
    "dei_EntityFilerCategory": {
     "auth_ref": [
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Entity Filer Category"
       }
      }
     },
     "localname": "EntityFilerCategory",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "filerCategoryItemType"
    },
    "dei_EntityIncorporationStateCountryCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Two-character EDGAR code representing the state or country of incorporation.",
        "label": "Entity Incorporation, State or Country Code"
       }
      }
     },
     "localname": "EntityIncorporationStateCountryCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarStateCountryItemType"
    },
    "dei_EntityInteractiveDataCurrent": {
     "auth_ref": [
      "r405"
     ],
     "lang": {
      "en-US": {
       "role": {
        "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).",
        "label": "Entity Interactive Data Current"
       }
      }
     },
     "localname": "EntityInteractiveDataCurrent",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityPublicFloat": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.",
        "label": "Entity Public Float"
       }
      }
     },
     "localname": "EntityPublicFloat",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
        "label": "Entity Registrant Name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityShellCompany": {
     "auth_ref": [
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.",
        "label": "Entity Shell Company"
       }
      }
     },
     "localname": "EntityShellCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntitySmallBusiness": {
     "auth_ref": [
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).",
        "label": "Entity Small Business"
       }
      }
     },
     "localname": "EntitySmallBusiness",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityTaxIdentificationNumber": {
     "auth_ref": [
      "r404"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
        "label": "Entity Tax Identification Number"
       }
      }
     },
     "localname": "EntityTaxIdentificationNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "employerIdItemType"
    },
    "dei_EntityVoluntaryFilers": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Entity Voluntary Filers"
       }
      }
     },
     "localname": "EntityVoluntaryFilers",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityWellKnownSeasonedIssuer": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Entity Well-known Seasoned Issuer"
       }
      }
     },
     "localname": "EntityWellKnownSeasonedIssuer",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_LocalPhoneNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Local phone number for entity.",
        "label": "Local Phone Number"
       }
      }
     },
     "localname": "LocalPhoneNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_Security12bTitle": {
     "auth_ref": [
      "r400"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Title of a 12(b) registered security.",
        "label": "Title of 12(b) Security"
       }
      }
     },
     "localname": "Security12bTitle",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "securityTitleItemType"
    },
    "dei_SecurityExchangeName": {
     "auth_ref": [
      "r401"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the Exchange on which a security is registered.",
        "label": "Security Exchange Name"
       }
      }
     },
     "localname": "SecurityExchangeName",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarExchangeCodeItemType"
    },
    "dei_TradingSymbol": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Trading symbol of an instrument as listed on an exchange.",
        "label": "Trading Symbol"
       }
      }
     },
     "localname": "TradingSymbol",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "tradingSymbolItemType"
    },
    "home_AccentDecorMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information pertaining to Accent decor.",
        "label": "Accent Decor [Member]",
        "terseLabel": "Accent decor"
       }
      }
     },
     "localname": "AccentDecorMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_AccruedConstructionCostsCurrent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 9.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred through that date and payable towards construction cost, for which the product or service has been received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrued Construction costs, Current",
        "verboseLabel": "Construction costs"
       }
      }
     },
     "localname": "AccruedConstructionCostsCurrent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_AccruedFreightCurrent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred through that date and payable for freight.",
        "label": "Accrued Freight Current",
        "terseLabel": "Accrued inbound freight"
       }
      }
     },
     "localname": "AccruedFreightCurrent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_AccruedInventoryInTransitCurrent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred through that date and payable for inventory in transit. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrued Inventory In Transit , Current",
        "verboseLabel": "Inventory in-transit"
       }
      }
     },
     "localname": "AccruedInventoryInTransitCurrent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_AchievementAtOrAboveMaximumPerformanceLevelsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for Achievement at or above maximum performance levels.",
        "label": "Achievement At Or Above Maximum Performance Levels [Member]",
        "terseLabel": "Achievement at or above maximum performance levels"
       }
      }
     },
     "localname": "AchievementAtOrAboveMaximumPerformanceLevelsMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_AchievementOfTargetPerformanceLevelsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for Achievement of target performance levels.",
        "label": "Achievement Of Target Performance Levels [Member]",
        "terseLabel": "Achievement of target performance levels"
       }
      }
     },
     "localname": "AchievementOfTargetPerformanceLevelsMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_AchievementOfThresholdPerformanceLevelsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for Achievement of threshold performance levels.",
        "label": "Achievement Of Threshold Performance Levels [Member]",
        "terseLabel": "Achievement of threshold performance levels"
       }
      }
     },
     "localname": "AchievementOfThresholdPerformanceLevelsMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_AeaInvestorsLlcMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information pertaining to AEA Investors, LLC.",
        "label": "Aea Investors Llc [Member]",
        "terseLabel": "AEA"
       }
      }
     },
     "localname": "AeaInvestorsLlcMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_ChairmanAndChiefExecutiveOfficerMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The member represents Chairman and Chief Executive Officer of the company",
        "label": "Chairman And Chief Executive Officer [Member]",
        "terseLabel": "Chairman and Chief Executive Officer"
       }
      }
     },
     "localname": "ChairmanAndChiefExecutiveOfficerMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_ConsiderationReceivedFromVendorsPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for consideration received from vendors.",
        "label": "Consideration Received from Vendors, Policy [Policy Text Block]",
        "terseLabel": "Consideration Received from Vendors"
       }
      }
     },
     "localname": "ConsiderationReceivedFromVendorsPolicyPolicyTextBlock",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "home_CreditCardProgramMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for credit card program.",
        "label": "Credit Card Program [Member]",
        "terseLabel": "Credit Card Program"
       }
      }
     },
     "localname": "CreditCardProgramMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_DebtInstrumentBasisSpreadOnVariableRateApplicableMargin": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage points added on to the reference rate as part of an additional applicable margin to compute the variable rate on the debt instrument.",
        "label": "Debt Instrument Basis Spread on Variable Rate Applicable Margin",
        "terseLabel": "Applicable margin"
       }
      }
     },
     "localname": "DebtInstrumentBasisSpreadOnVariableRateApplicableMargin",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_DebtInstrumentBasisSpreadOnVariableRateApplicableMarginOnBanksLibor": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage points added on to the bank's LIBOR rate as part of an additional applicable margin to compute the variable rate on the debt instrument.",
        "label": "Debt Instrument Basis Spread On Variable Rate Applicable Margin on Banks LIBOR",
        "terseLabel": "Applicable margin on bank's LIBOR"
       }
      }
     },
     "localname": "DebtInstrumentBasisSpreadOnVariableRateApplicableMarginOnBanksLibor",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_DebtInstrumentFixedCoverageRatio": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the ratio of earnings before interest, depreciation and amortization divided by total debt service.",
        "label": "Debt Instrument Fixed Coverage Ratio",
        "terseLabel": "Fixed charge coverage ratio"
       }
      }
     },
     "localname": "DebtInstrumentFixedCoverageRatio",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "home_DebtInstrumentFloorRate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The floor interest rate during the reporting period.",
        "label": "Debt Instrument, Floor Rate",
        "verboseLabel": "Floor rate"
       }
      }
     },
     "localname": "DebtInstrumentFloorRate",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_DebtInstrumentPeriodicPaymentPercent": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of the required periodic payments including both interest and principal payments.",
        "label": "Debt Instrument, Periodic Payment, Percent",
        "verboseLabel": "Percentage of annual aggregate amount of principal amount"
       }
      }
     },
     "localname": "DebtInstrumentPeriodicPaymentPercent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_DebtInstrumentRateReductionPercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the percentage reduction in the rate paid by the borrower if the borrower achieves a specified secured net leverage ratio level after a qualifying initial public offering.",
        "label": "Debt Instrument Rate Reduction Percentage",
        "terseLabel": "Interest rate reduction, related to net leverage ratio"
       }
      }
     },
     "localname": "DebtInstrumentRateReductionPercentage",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_Decrease10InProjectedNetCashFlowMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member represents Decrease 10% in Projected Net Cash flow.",
        "label": "Decrease10 In Projected Net Cash Flow [Member]",
        "terseLabel": "Cash flow projection"
       }
      }
     },
     "localname": "Decrease10InProjectedNetCashFlowMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_DeferredCompensationArrangementWithIndividualAgeLimit": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Age limit under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Deferred Compensation Arrangement With Individual Age Limit",
        "terseLabel": "Minimum age limit"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualAgeLimit",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "home_DeferredTaxAssetNoncurrentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stand for noncurrent deferred tax assets.",
        "label": "Deferred Tax Asset Noncurrent [Member]",
        "terseLabel": "Noncurrent deferred tax asset"
       }
      }
     },
     "localname": "DeferredTaxAssetNoncurrentMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_DeferredTaxAssetsFinancingObligations": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information pertaining to deferred tax assets financing obligations.",
        "label": "Deferred Tax Assets, Financing Obligations",
        "terseLabel": "Financing obligations"
       }
      }
     },
     "localname": "DeferredTaxAssetsFinancingObligations",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_DeferredTaxAssetsOperatingLeaseLiabilities": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 11.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from operating lease liabilities.",
        "label": "Deferred Tax Assets, Operating Lease Liabilities",
        "terseLabel": "Operating lease liabilities"
       }
      }
     },
     "localname": "DeferredTaxAssetsOperatingLeaseLiabilities",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_DeferredTaxAssetsPrepaidRent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 10.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as prepaid rent.",
        "label": "Deferred Tax Assets Prepaid Rent",
        "terseLabel": "Prepaid rent"
       }
      }
     },
     "localname": "DeferredTaxAssetsPrepaidRent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_DeferredTaxAssetsTaxDeferredExpenseAccruals": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 9.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accruals.",
        "label": "Deferred Tax Assets Tax Deferred Expense Accruals",
        "terseLabel": "Accruals"
       }
      }
     },
     "localname": "DeferredTaxAssetsTaxDeferredExpenseAccruals",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from operating lease right-of-use assets.",
        "label": "Deferred Tax Liabilities Operating Lease Right Of Use Assets",
        "negatedLabel": "Operating lease right-of-use asset"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_DifferenceOfCarryingValueAndFairValue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of difference between the carrying value and the fair value of the liability during the reporting period.",
        "label": "Difference of Carrying Value and Fair Value",
        "terseLabel": "Difference of carrying value and fair value"
       }
      }
     },
     "localname": "DifferenceOfCarryingValueAndFairValue",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_DocumentAndEntityInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "No definition available.",
        "label": "Document and Entity Information [Abstract]"
       }
      }
     },
     "localname": "DocumentAndEntityInformationAbstract",
     "nsuri": "http://www.athome.com/20200519",
     "xbrltype": "stringItemType"
    },
    "home_EquityPlan2016Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information pertaining to equity plan 2016.",
        "label": "Equity Plan2016 [Member]",
        "terseLabel": "2016 Equity Plan"
       }
      }
     },
     "localname": "EquityPlan2016Member",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_FederalFundsRateMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the Federal Funds Rate.",
        "label": "Federal Funds Rate [Member]",
        "terseLabel": "Federal Funds Rate"
       }
      }
     },
     "localname": "FederalFundsRateMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_FinanceLeaseObligationMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents finance lease obligation.",
        "label": "Finance Lease Obligation [Member]",
        "terseLabel": "Obligations under finance leases"
       }
      }
     },
     "localname": "FinanceLeaseObligationMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_FinancingObligationsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for financing obligations.",
        "label": "Financing Obligations [Member]",
        "terseLabel": "Financing Obligations"
       }
      }
     },
     "localname": "FinancingObligationsMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_FinancingObligationsNoncurrent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "An obligation relating to being the accounting owner of a construction project for certain landlord assets relating to leased properties.",
        "label": "Financing Obligations Noncurrent",
        "terseLabel": "Financing obligations"
       }
      }
     },
     "localname": "FinancingObligationsNoncurrent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_FirstPortionOfParticipantsAnnualContributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information relating to the the employer's matching contribution of the employee's annual compensation up to 3%.",
        "label": "First Portion Of Participants Annual Contribution [Member]",
        "terseLabel": "Matching on up to first 3% of participant's annual compensation"
       }
      }
     },
     "localname": "FirstPortionOfParticipantsAnnualContributionMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_FixedRateMortgageMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information pertaining to fixed rate mortgage.",
        "label": "Fixed Rate Mortgage [Member]",
        "terseLabel": "Fixed rate mortgage"
       }
      }
     },
     "localname": "FixedRateMortgageMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_GiftCardRedemptionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for gift card redemption.",
        "label": "Gift Card Redemption [Member]",
        "terseLabel": "Gift Card Redemption"
       }
      }
     },
     "localname": "GiftCardRedemptionMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_GuaranteesAndRestrictionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "N/A",
        "label": "Guarantees And Restrictions [Abstract]",
        "terseLabel": "Guarantees and Restrictions"
       }
      }
     },
     "localname": "GuaranteesAndRestrictionsAbstract",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "home_HomeFurnishingMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information pertaining to home furnishing.",
        "label": "Home Furnishing [Member]",
        "terseLabel": "Home furnishings"
       }
      }
     },
     "localname": "HomeFurnishingMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_IPOBonusPoolMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "First sale of stock by a private company to the public as a special bonus pool.",
        "label": "I P O Bonus Pool [Member]",
        "terseLabel": "IPO Bonus Pool"
       }
      }
     },
     "localname": "IPOBonusPoolMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_IncomeTaxReconciliationChangeInUnrecognizedTaxBenefits": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "\"Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the unrecognized tax benefits. \"",
        "label": "Income Tax Reconciliation Change In Unrecognized Tax Benefits",
        "terseLabel": "Change in unrecognized tax benefits"
       }
      }
     },
     "localname": "IncomeTaxReconciliationChangeInUnrecognizedTaxBenefits",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_IncomeTaxReconciliationDeferredAdjustments": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deferred adjustments.",
        "label": "Income Tax Reconciliation Deferred Adjustments",
        "terseLabel": "Deferred adjustment"
       }
      }
     },
     "localname": "IncomeTaxReconciliationDeferredAdjustments",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_Increase100BasisPointInDiscountRateMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member represents Increase 100 Basis Point in Discount Rate.",
        "label": "Increase100 Basis Point In Discount Rate [Member]",
        "terseLabel": "Point Discount rate"
       }
      }
     },
     "localname": "Increase100BasisPointInDiscountRateMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_IncreaseDecreaseInDeferredRent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the value of expenditures made during the current reporting period towards rent.",
        "label": "Increase (Decrease) in Deferred Rent",
        "negatedLabel": "Deferred rent"
       }
      }
     },
     "localname": "IncreaseDecreaseInDeferredRent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_IncreaseDecreaseInOperatingLeaseAssetsAndLiabilities": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 13.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of increase (decrease) in operating lease assets and liabilities.",
        "label": "Increase (Decrease) In Operating Lease Assets and Liabilities",
        "verboseLabel": "Operating lease liabilities"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingLeaseAssetsAndLiabilities",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_InitialPublicOfferingPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for initial public offering.",
        "label": "Initial Public Offering, Policy [Policy Text Block]",
        "verboseLabel": "Initial and Secondary Public Offerings"
       }
      }
     },
     "localname": "InitialPublicOfferingPolicyPolicyTextBlock",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "home_InsuranceCoverageAggregateClaimLimitForIndividualClaimPerEmployeeRelatedHealthCareClaim": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of exposure limit under insurance coverage for individual claims per employee-related health care claim.",
        "label": "Insurance Coverage, Aggregate Claim Limit for Individual Claim Per employee-related health care claim",
        "terseLabel": "Aggregate exposure for individual claims per employee-related health care claim"
       }
      }
     },
     "localname": "InsuranceCoverageAggregateClaimLimitForIndividualClaimPerEmployeeRelatedHealthCareClaim",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_InsuranceCoverageAggregateClaimLimitForIndividualClaimPerWorkersCompensationAndCommercialGeneralLiabilityClaim": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of exposure limit under insurance coverage for individual claims per workers' compensation and commercial general liability claim.",
        "label": "Insurance Coverage, Aggregate Claim Limit for Individual Claim Per Workers' Compensation and Commercial General Liability Claim",
        "terseLabel": "Aggregate exposure for individual claims per workers' compensation and commercial general liability claim"
       }
      }
     },
     "localname": "InsuranceCoverageAggregateClaimLimitForIndividualClaimPerWorkersCompensationAndCommercialGeneralLiabilityClaim",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_InterestExpenseNonCash": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 15.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of non cash interest expense made during the reporting period.",
        "label": "Interest Expense, Non Cash",
        "terseLabel": "Non-cash interest expense"
       }
      }
     },
     "localname": "InterestExpenseNonCash",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseCashFlowSupplementalInformationTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Supplemental cash flow information pertaining to leases.",
        "label": "Lease Cash Flow Supplemental Information [Table Text Block]",
        "terseLabel": "Schedule of supplemental cash flow information"
       }
      }
     },
     "localname": "LeaseCashFlowSupplementalInformationTableTextBlock",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "home_LeaseExpenseNonCash": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 14.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of non cash interest expense during the period.",
        "label": "Lease Expense Non Cash",
        "terseLabel": "Non-cash lease expense"
       }
      }
     },
     "localname": "LeaseExpenseNonCash",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilitiesPaymentsDueAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Lease Liabilities, Payments, Due [Abstract]",
        "label": "Lease Liabilities, Payments, Due [Abstract]",
        "terseLabel": "Total"
       }
      }
     },
     "localname": "LeaseLiabilitiesPaymentsDueAbstract",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "home_LeaseLiability": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      },
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease and finance lease.",
        "label": "Lease Liability",
        "totalLabel": "Present value of lease liabilities"
       }
      }
     },
     "localname": "LeaseLiability",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityCurrent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": 1.0,
       "parentTag": "home_LeaseLiability",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for current lease payments from operating lease and finance lease.",
        "label": "Lease Liability, Current",
        "negatedLabel": "Less current obligations"
       }
      }
     },
     "localname": "LeaseLiabilityCurrent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityMaturityTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of undiscounted cash flows of lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to lease liability recognized in statement of financial position.",
        "label": "Lease Liability Maturity [Table Text Block]",
        "terseLabel": "Schedule of maturities of lease liabilities"
       }
      }
     },
     "localname": "LeaseLiabilityMaturityTableTextBlock",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "home_LeaseLiabilityNonCurrent": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": 2.0,
       "parentTag": "home_LeaseLiability",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for non-current lease payments from operating lease and finance lease.",
        "label": "Lease Liability, Non-current",
        "terseLabel": "Long-term lease obligations"
       }
      }
     },
     "localname": "LeaseLiabilityNonCurrent",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityPaymentsDueAfterYearFive": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 6.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease and finance lease, due after fifth fiscal year following latest fiscal year.",
        "label": "Lease Liability, Payments, Due After Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "LeaseLiabilityPaymentsDueAfterYearFive",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityPaymentsDueNextTwelveMonths": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 1.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments, due in next fiscal year following latest fiscal year.",
        "label": "Lease Liability Payments Due Next Twelve Months",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LeaseLiabilityPaymentsDueNextTwelveMonths",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityPaymentsDueTotal": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease and finance lease.",
        "label": "Lease Liability, Payments, Due, Total",
        "totalLabel": "Total minimum lease payments"
       }
      }
     },
     "localname": "LeaseLiabilityPaymentsDueTotal",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityPaymentsDueYearFive": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 5.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease and finance lease, due in fifth fiscal year following latest fiscal year.",
        "label": "Lease Liability, Payments, Due Year Five",
        "terseLabel": "2025"
       }
      }
     },
     "localname": "LeaseLiabilityPaymentsDueYearFive",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityPaymentsDueYearFour": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 4.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease and finance lease, due in fourth fiscal year following latest fiscal year.",
        "label": "Lease Liability, Payments, Due Year Four",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "LeaseLiabilityPaymentsDueYearFour",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityPaymentsDueYearThree": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 3.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease and finance lease, due in third fiscal year following latest fiscal year.",
        "label": "Lease Liability, Payments, Due Year Three",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LeaseLiabilityPaymentsDueYearThree",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityPaymentsDueYearTwo": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 2.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease and finance lease, due in second fiscal year following latest fiscal year.",
        "label": "Lease Liability, Payments, Due Year Two",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LeaseLiabilityPaymentsDueYearTwo",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseLiabilityUndiscountedExcessAmount": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "home_LeaseLiabilityPaymentsDueTotal",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.",
        "label": "Lease Liability, Undiscounted Excess Amount",
        "negatedLabel": "Less: amount representing interest"
       }
      }
     },
     "localname": "LeaseLiabilityUndiscountedExcessAmount",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LeaseWeightedAverageLeaseTermAndDiscountRateTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The tabular disclosure of the remaining lease term and discount rate.",
        "label": "Lease Weighted Average Lease Term And Discount Rate [Table Text Block]",
        "terseLabel": "Schedule of weighted average remaining lease term and discount rate"
       }
      }
     },
     "localname": "LeaseWeightedAverageLeaseTermAndDiscountRateTableTextBlock",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "home_LineOfCreditFacilityContingentIncreaseAdditionalBorrowingCapacity": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The contingent increase above the maximum borrowing capacity under the credit facility, if any one or more of the existing banks or new banks agree to provide such increased commitment amount.",
        "label": "Line of Credit Facility Contingent Increase, Additional Borrowing Capacity",
        "terseLabel": "Additional borrowings",
        "verboseLabel": "Additional borrowing capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityContingentIncreaseAdditionalBorrowingCapacity",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_LoanCapPercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of loan cap to pay dividends.",
        "label": "Loan Cap Percentage",
        "terseLabel": "Loan cap rate"
       }
      }
     },
     "localname": "LoanCapPercentage",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_LongTermDebtCurrentGross": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long Term Debt Current, Gross",
        "terseLabel": "Less: current maturities"
       }
      }
     },
     "localname": "LongTermDebtCurrentGross",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_MinimumCashInterestCoverageRatioToPayDividend": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the minimum cash interest coverage ratio needed according to terms of the agreement in order for the borrower to pay a dividend to Holdings.",
        "label": "Minimum Cash Interest Coverage Ratio To Pay Dividend",
        "terseLabel": "Minimum cash interest coverage ratio to pay dividend"
       }
      }
     },
     "localname": "MinimumCashInterestCoverageRatioToPayDividend",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "home_MinimumLeasePaymentsForLeasesSignedButNotYetCommenced": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of minimum lease payments for leases signed but not yet commenced.",
        "label": "Minimum Lease Payments For Leases Signed But Not Yet Commenced",
        "terseLabel": "Minimum lease payments for leases signed but not yet commenced"
       }
      }
     },
     "localname": "MinimumLeasePaymentsForLeasesSignedButNotYetCommenced",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_NotesPayableToBanksTwoMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A written promise to pay a note two to a bank.",
        "label": "Notes Payable To Banks Two [Member]",
        "terseLabel": "Note payable, bank"
       }
      }
     },
     "localname": "NotesPayableToBanksTwoMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_NumberOfConsecutiveTradingDaysWhenTargetWasExceeded": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the number of consecutive trading days when target was exceeded.",
        "label": "Number of Consecutive Trading Days When Target Was Exceeded",
        "terseLabel": "Trading days"
       }
      }
     },
     "localname": "NumberOfConsecutiveTradingDaysWhenTargetWasExceeded",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "home_NumberOfEquityCompensationPlans": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the number of equity compensation plans.",
        "label": "Number Of Equity Compensation Plans",
        "terseLabel": "Number of equity compensation plans"
       }
      }
     },
     "localname": "NumberOfEquityCompensationPlans",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "home_NumberOfLeases": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the number of properties leased.",
        "label": "Number of Leases",
        "terseLabel": "Number of leases"
       }
      }
     },
     "localname": "NumberOfLeases",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "home_NumberOfNewStores": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of new stores that were or at near completion.",
        "label": "Number Of New Stores",
        "terseLabel": "Number of new stores"
       }
      }
     },
     "localname": "NumberOfNewStores",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "home_NumberOfPropertiesSold": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the number of properties sold.",
        "label": "Number of Properties Sold",
        "verboseLabel": "Number of properties sold"
       }
      }
     },
     "localname": "NumberOfPropertiesSold",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "home_NumberOfRealEstateLeasesForStoreProperties": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of real estate leases for store properties that qualify for treatment as finance leases",
        "label": "Number of Real Estate Leases for Store Properties",
        "terseLabel": "Number of real estate leases for store properties that qualify for treatment as finance leases"
       }
      }
     },
     "localname": "NumberOfRealEstateLeasesForStoreProperties",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "home_NumberOfStoresClosed": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The neumber of stores closed.",
        "label": "Number Of Stores Closed",
        "terseLabel": "The number os stores that are closed"
       }
      }
     },
     "localname": "NumberOfStoresClosed",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "home_OneTimeCeoGrantMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for one time CEO grants awards.",
        "label": "One Time Ceo Grant [Member]",
        "terseLabel": "One Time CEO Grant"
       }
      }
     },
     "localname": "OneTimeCeoGrantMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_OptionCancellationAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for nonqualified stock option cancellation agreement with the Chairman and Chief Executive Officer, Lewis L. Bird III",
        "label": "Option Cancellation Agreement [Member]",
        "terseLabel": "Option Cancellation Agreement"
       }
      }
     },
     "localname": "OptionCancellationAgreementMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_OtherThanIPOBonusPoolMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information pertaining to equity plan 2016.",
        "label": "Other Than I P O Bonus Pool [Member]",
        "terseLabel": "Post IPO Share Pool"
       }
      }
     },
     "localname": "OtherThanIPOBonusPoolMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_PaymentsOfFinancingObligations": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents payments on obligations relating to being the accounting owner of a construction project for certain landlord assets relating to leased properties.",
        "label": "Payments of Financing Obligations",
        "negatedLabel": "Payments on financing obligations"
       }
      }
     },
     "localname": "PaymentsOfFinancingObligations",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_PercentageExpansionOfAdjustedNetIncome": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The percentage expansion of Adjusted Net Income based on Comparable Store Sales and Adjusted Net Income as reported.",
        "label": "Percentage Expansion of Adjusted Net Income",
        "terseLabel": "Percentage expansion of Adjusted Net Income"
       }
      }
     },
     "localname": "PercentageExpansionOfAdjustedNetIncome",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_PercentageOfNetCashFlowDecrease": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This represents percentage of net cash flow decrease.",
        "label": "Percentage Of Net Cash Flow Decrease"
       }
      }
     },
     "localname": "PercentageOfNetCashFlowDecrease",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_PercentageOfSettlementOnTarget": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The percentage of target, number of shares delivered on settlement of awards.",
        "label": "Percentage of Settlement on Target",
        "terseLabel": "Percentage of Settlement on Target"
       }
      }
     },
     "localname": "PercentageOfSettlementOnTarget",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_PercentageOfStoresClosedDueToEconomicFactors": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of stores closed due to economic factors.",
        "label": "Percentage Of Stores Closed due To Economic Factors",
        "terseLabel": "Percentage of stores closed"
       }
      }
     },
     "localname": "PercentageOfStoresClosedDueToEconomicFactors",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_PreOperatingCostsPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for pre-operating costs.",
        "label": "Pre Operating Costs, Policy [Policy Text Block]",
        "terseLabel": "Store Pre-Opening Costs"
       }
      }
     },
     "localname": "PreOperatingCostsPolicyPolicyTextBlock",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "home_ProceedsFromFinancingObligations": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents proceeds from obligations relating to being the accounting owner of a construction project for certain landlord assets relating to leased properties.",
        "label": "Proceeds from Financing Obligations",
        "terseLabel": "Proceeds from financing obligations"
       }
      }
     },
     "localname": "ProceedsFromFinancingObligations",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_PropertyAndEquipmentAdditionsDueToBuildToSuitLeaseTransactions": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "\"The amount of property and equipment additions due to build to suit lease transactions in noncash investing or financing transactions. \"",
        "label": "Property And Equipment Additions Due To Build-To-Suit Lease Transactions",
        "terseLabel": "Property and equipment additions due to build-to-suit lease transactions"
       }
      }
     },
     "localname": "PropertyAndEquipmentAdditionsDueToBuildToSuitLeaseTransactions",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_PropertyAndEquipmentIncludedInAccountsPayable": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "\"The amount of property and equipment included in accounts payable in noncash investing or financing transactions. \"",
        "label": "Property And Equipment Included In Accounts Payable",
        "terseLabel": "(Decrease) increase in current liabilities of property and equipment"
       }
      }
     },
     "localname": "PropertyAndEquipmentIncludedInAccountsPayable",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_PropertyAndEquipmentReductionDueToSaleLeaseback": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "\"The amount of property and equipment reduction due to sale leaseback in noncash investing or financing transactions. \"",
        "label": "Property And Equipment Reduction Due To Sale Leaseback",
        "negatedLabel": "Property and equipment reduction due to sale-leaseback"
       }
      }
     },
     "localname": "PropertyAndEquipmentReductionDueToSaleLeaseback",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_ReserveForSalesReturns": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 8.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of reserve for estimated sales returns.",
        "label": "Reserve for Sales Returns",
        "terseLabel": "Sales returns reserve"
       }
      }
     },
     "localname": "ReserveForSalesReturns",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_RevenueFromContractWithCustomersPercentage": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The percentage of revenue received from contract with customers.",
        "label": "Revenue From Contract With Customers, Percentage",
        "terseLabel": "Revenue percentage"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomersPercentage",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_RightOfUseAssetsObtainedInExchangeForOperatingLeaseLiabilities": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Right-of-use assets obtained in exchange for operating lease liabilities",
        "label": "Right Of Use Assets Obtained In Exchange For Operating Lease Liabilities",
        "terseLabel": "Right-of-use assets obtained in exchange for operating lease liabilities"
       }
      }
     },
     "localname": "RightOfUseAssetsObtainedInExchangeForOperatingLeaseLiabilities",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_SaleLeasebackTransactionAnnualRental": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The yearly payments due under the lease entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.",
        "label": "Sale Leaseback Transaction, Annual Rental",
        "terseLabel": "Cumulative initial annual rent"
       }
      }
     },
     "localname": "SaleLeasebackTransactionAnnualRental",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_SaleLeasebackTransactionPrice": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transaction price of sale lease back activity.",
        "label": "Sale Leaseback Transaction Price",
        "terseLabel": "Proceeds from sale of properties"
       }
      }
     },
     "localname": "SaleLeasebackTransactionPrice",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_SalesGrowthRate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The percentage of comparable sales growth rate.",
        "label": "Sales Growth Rate",
        "terseLabel": "Comparable Store Sales Growth"
       }
      }
     },
     "localname": "SalesGrowthRate",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_SecondPortionOfParticipantsAnnualContributionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information relating to the the employer's matching contribution of the employee's annual compensation between 3% and 5%.",
        "label": "Second Portion Of Participants Annual Contribution [Member]",
        "terseLabel": "Matching between 3% and 5% of participant's annual compensation"
       }
      }
     },
     "localname": "SecondPortionOfParticipantsAnnualContributionMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_SecondaryOfferingMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "This member stands for issuance of the stock made during the period under secondary offering",
        "label": "Secondary Offering [Member]",
        "terseLabel": "Secondary offering"
       }
      }
     },
     "localname": "SecondaryOfferingMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalGrantDateFairValue": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the total fair value of options granted during the reporting period.",
        "label": "Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Total Grant Date Fair Value",
        "terseLabel": "Total grant date fair value"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalGrantDateFairValue",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsTaxExpensesBenefitOnCancellation": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tax expense (benefit )amount on cancellation of options.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Tax Expenses (Benefit) on Cancellation",
        "verboseLabel": "Deferred tax expense"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsTaxExpensesBenefitOnCancellation",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_SharesIssuableThroughInitialPublicOffering": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the shares issuable through initial public offering.",
        "label": "Shares Issuable Through Initial Public Offering",
        "terseLabel": "Shares registered"
       }
      }
     },
     "localname": "SharesIssuableThroughInitialPublicOffering",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "home_StarInvestmentHoldingsLlcMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents information pertaining to Star Investment Holdings, LLC.",
        "label": "Star Investment Holdings Llc [Member]",
        "terseLabel": "Starr Investments"
       }
      }
     },
     "localname": "StarInvestmentHoldingsLlcMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_StockBasedCompensationExpenseExpensedPeriod": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the number of periods over which the stock-based compensation expense will be expensed or written off.",
        "label": "Stock-based Compensation Expense, Expensed Period",
        "terseLabel": "Expense period"
       }
      }
     },
     "localname": "StockBasedCompensationExpenseExpensedPeriod",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "home_StockOptionPlan2012Member": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the information pertaining to 2012 stock option plan member.",
        "label": "Stock Option Plan2012 [Member]",
        "terseLabel": "2012 stock option plan"
       }
      }
     },
     "localname": "StockOptionPlan2012Member",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_SupplementalDisclosuresOfCashFlowInformationRelatedToLeasesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "No definition available.",
        "label": "Supplemental Disclosures of Cash Flow Information Related to Leases [Abstract]",
        "terseLabel": "Supplemental disclosures of cash flow information related to leases"
       }
      }
     },
     "localname": "SupplementalDisclosuresOfCashFlowInformationRelatedToLeasesAbstract",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "home_SwinglineLoanMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information pertaining to a swingline loan facility.",
        "label": "Swingline Loan [Member]",
        "terseLabel": "Swingline loan"
       }
      }
     },
     "localname": "SwinglineLoanMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_TermLoanFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represent of Term Loan Facility Member",
        "label": "Term Loan Facility [Member]",
        "terseLabel": "Term Loan"
       }
      }
     },
     "localname": "TermLoanFacilityMember",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "home_ThresholdAdditionalAmountToPayDividend": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the threshold additional amount to pay dividend.",
        "label": "Threshold Additional Amount To Pay Dividend",
        "terseLabel": "Threshold additional amount to pay dividend"
       }
      }
     },
     "localname": "ThresholdAdditionalAmountToPayDividend",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_ThresholdAmountToPayDividend": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the threshold amount to pay dividend.",
        "label": "Threshold Amount To Pay Dividend",
        "terseLabel": "Threshold amount to pay dividend"
       }
      }
     },
     "localname": "ThresholdAmountToPayDividend",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "home_ThresholdPercentageOnNetIncomeToPayDividend": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the threshold percentage of net income to pay dividend.",
        "label": "Threshold Percentage Of Net Income To Pay Dividend",
        "terseLabel": "Threshold percentage on net income to pay dividend"
       }
      }
     },
     "localname": "ThresholdPercentageOnNetIncomeToPayDividend",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "home_TotalLeverageRatio": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the total leverage ratio needed according to terms of the agreement in order for the borrower to pay a dividend to Holdings.",
        "label": "Total Leverage Ratio",
        "terseLabel": "Total leverage ratio to pay dividend"
       }
      }
     },
     "localname": "TotalLeverageRatio",
     "nsuri": "http://www.athome.com/20200519",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "srt_CondensedBalanceSheetStatementTable": {
     "auth_ref": [
      "r94",
      "r287"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Balance Sheet Statement [Table]"
       }
      }
     },
     "localname": "CondensedBalanceSheetStatementTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedBalanceSheetStatementsCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Balance Sheet Statements, Captions [Line Items]",
        "terseLabel": "Condensed Balance Sheets"
       }
      }
     },
     "localname": "CondensedBalanceSheetStatementsCaptionsLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Financial Information of Registrant"
       }
      }
     },
     "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_CondensedFinancialStatementsCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Financial Statements, Captions [Line Items]"
       }
      }
     },
     "localname": "CondensedFinancialStatementsCaptionsLineItems",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedIncomeStatementTable": {
     "auth_ref": [
      "r94",
      "r287"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Income Statement [Table]"
       }
      }
     },
     "localname": "CondensedIncomeStatementTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesAxis": {
     "auth_ref": [
      "r399"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Consolidated Entities [Axis]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Consolidated Entities [Domain]",
        "terseLabel": "Consolidated Entities [Domain]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MaximumMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Maximum [Member]",
        "terseLabel": "Maximum"
       }
      }
     },
     "localname": "MaximumMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MinimumMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Minimum [Member]",
        "terseLabel": "Minimum"
       }
      }
     },
     "localname": "MinimumMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_OwnershipAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Ownership [Axis]"
       }
      }
     },
     "localname": "OwnershipAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_OwnershipDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Ownership [Domain]",
        "terseLabel": "Ownership [Domain]"
       }
      }
     },
     "localname": "OwnershipDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ParentCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Parent Company [Member]",
        "terseLabel": "Parent company"
       }
      }
     },
     "localname": "ParentCompanyMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ProductOrServiceAxis": {
     "auth_ref": [
      "r131",
      "r191",
      "r194",
      "r393",
      "r394"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Product and Service [Axis]"
       }
      }
     },
     "localname": "ProductOrServiceAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails",
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ProductsAndServicesDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Products And Services [Domain]",
        "terseLabel": "Product and Service [Domain]"
       }
      }
     },
     "localname": "ProductsAndServicesDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails",
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RangeAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Statistical Measurement [Axis]"
       }
      }
     },
     "localname": "RangeAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RangeMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Range [Member]",
        "terseLabel": "Statistical Measurement [Domain]"
       }
      }
     },
     "localname": "RangeMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RestatementAdjustmentMember": {
     "auth_ref": [
      "r99",
      "r100",
      "r101",
      "r102"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Restatement Adjustment [Member]",
        "terseLabel": "As adjusted"
       }
      }
     },
     "localname": "RestatementAdjustmentMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RestatementAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Restatement [Axis]"
       }
      }
     },
     "localname": "RestatementAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RestatementDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Restatement [Domain]",
        "terseLabel": "Restatement [Domain]"
       }
      }
     },
     "localname": "RestatementDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioPreviouslyReportedMember": {
     "auth_ref": [
      "r100",
      "r101",
      "r102"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Scenario Previously Reported [Member]",
        "terseLabel": "Previously reported"
       }
      }
     },
     "localname": "ScenarioPreviouslyReportedMember",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioUnspecifiedDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Scenario Unspecified [Domain]",
        "terseLabel": "Scenario [Domain]"
       }
      }
     },
     "localname": "ScenarioUnspecifiedDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScheduleOfCondensedFinancialStatementsTable": {
     "auth_ref": [
      "r94",
      "r287"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Financial Statements [Table]"
       }
      }
     },
     "localname": "ScheduleOfCondensedFinancialStatementsTable",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_StatementScenarioAxis": {
     "auth_ref": [
      "r174",
      "r354"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Scenario [Axis]"
       }
      }
     },
     "localname": "StatementScenarioAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_TitleOfIndividualAxis": {
     "auth_ref": [
      "r132",
      "r345"
     ],
     "lang": {
      "en-US": {
       "role": {
        "label": "Title of Individual [Axis]"
       }
      }
     },
     "localname": "TitleOfIndividualAxis",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_TitleOfIndividualWithRelationshipToEntityDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Title Of Individual With Relationship To Entity [Domain]",
        "terseLabel": "Title of Individual [Domain]"
       }
      }
     },
     "localname": "TitleOfIndividualWithRelationshipToEntityDomain",
     "nsuri": "http://fasb.org/srt/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccountingStandardsUpdate201602Member": {
     "auth_ref": [
      "r322"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Accounting Standards Update 2016-02 Leases (Topic 842).",
        "label": "Accounting Standards Update201602 [Member]",
        "terseLabel": "ASU 2016-02"
       }
      }
     },
     "localname": "AccountingStandardsUpdate201602Member",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquityParenthetical"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock": {
     "auth_ref": [
      "r36"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.",
        "label": "Accrued Liabilities Disclosure [Text Block]",
        "verboseLabel": "Accrued and Other Current Liabilities"
       }
      }
     },
     "localname": "AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilities"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AccountsPayableCurrent": {
     "auth_ref": [
      "r35"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accounts Payable, Current",
        "terseLabel": "Accounts payable"
       }
      }
     },
     "localname": "AccountsPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent": {
     "auth_ref": [
      "r10",
      "r40",
      "r245"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrual for Taxes Other than Income Taxes, Current",
        "verboseLabel": "Accrued taxes, other than income"
       }
      }
     },
     "localname": "AccrualForTaxesOtherThanIncomeTaxesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedInsuranceCurrent": {
     "auth_ref": [
      "r9",
      "r10",
      "r40"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrued Insurance, Current",
        "verboseLabel": "Insurance liabilities"
       }
      }
     },
     "localname": "AccruedInsuranceCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedLiabilitiesCurrent": {
     "auth_ref": [
      "r40"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrued Liabilities, Current",
        "terseLabel": "Accrued and other current liabilities",
        "totalLabel": "Total accrued liabilities"
       }
      }
     },
     "localname": "AccruedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedLiabilitiesCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Accrued Liabilities"
       }
      }
     },
     "localname": "AccruedLiabilitiesCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": {
     "auth_ref": [
      "r33",
      "r168"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_PropertyPlantAndEquipmentNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.",
        "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment",
        "negatedLabel": "Less: accumulated depreciation and amortization"
       }
      }
     },
     "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdditionalPaidInCapital": {
     "auth_ref": [
      "r24"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.",
        "label": "Additional Paid in Capital.",
        "terseLabel": "Additional paid-in capital"
       }
      }
     },
     "localname": "AdditionalPaidInCapital",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdditionalPaidInCapitalMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.",
        "label": "Additional Paid In Capital [Member]",
        "terseLabel": "Additional Paid-in Capital"
       }
      }
     },
     "localname": "AdditionalPaidInCapitalMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": {
     "auth_ref": [
      "r98"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by new accounting pronouncement.",
        "label": "Adjustments for New Accounting Pronouncements [Axis]"
       }
      }
     },
     "localname": "AdjustmentsForNewAccountingPronouncementsAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquityParenthetical"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": {
     "auth_ref": [
      "r206",
      "r208",
      "r242",
      "r243"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.",
        "label": "Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition",
        "verboseLabel": "Stock-based compensation"
       }
      }
     },
     "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "Adjustments to reconcile net (loss) income to net cash provided by operating activities:"
       }
      }
     },
     "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdvertisingCostsPolicyTextBlock": {
     "auth_ref": [
      "r246"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for advertising cost.",
        "label": "Advertising Costs, Policy [Policy Text Block]",
        "terseLabel": "Marketing and Advertising"
       }
      }
     },
     "localname": "AdvertisingCostsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AdvertisingExpense": {
     "auth_ref": [
      "r247"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.",
        "label": "Advertising Expense",
        "terseLabel": "Advertising expense"
       }
      }
     },
     "localname": "AdvertisingExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AllocatedShareBasedCompensationExpense": {
     "auth_ref": [
      "r208",
      "r236",
      "r241"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.",
        "label": "Allocated Share-based Compensation Expense",
        "terseLabel": "Stock-based compensation expense"
       }
      }
     },
     "localname": "AllocatedShareBasedCompensationExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfFinancingCosts": {
     "auth_ref": [
      "r59",
      "r76",
      "r310"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense attributable to debt issuance costs.",
        "label": "Amortization of Debt Issuance Costs",
        "terseLabel": "Amortization of debt issuance cost"
       }
      }
     },
     "localname": "AmortizationOfFinancingCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfIntangibleAssets": {
     "auth_ref": [
      "r76",
      "r157",
      "r161"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.",
        "label": "Amortization of Intangible Assets",
        "verboseLabel": "Amortization expense related to capitalized software costs"
       }
      }
     },
     "localname": "AmortizationOfIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries": {
     "auth_ref": [
      "r89"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.",
        "label": "Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries",
        "terseLabel": "Restricted net assets"
       }
      }
     },
     "localname": "AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": {
     "auth_ref": [
      "r110"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.",
        "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount",
        "verboseLabel": "Antidilutive shares excluded from calculation of diluted net income per common share"
       }
      }
     },
     "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis": {
     "auth_ref": [
      "r110"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of antidilutive security.",
        "label": "Antidilutive Securities [Axis]"
       }
      }
     },
     "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]",
        "terseLabel": "Antidilutive securities excluded from computation of earnings per share"
       }
      }
     },
     "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AntidilutiveSecuritiesNameDomain": {
     "auth_ref": [
      "r110"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Incremental common shares attributable to securities that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.",
        "label": "Antidilutive Securities Name [Domain]",
        "terseLabel": "Antidilutive Securities, Name [Domain]"
       }
      }
     },
     "localname": "AntidilutiveSecuritiesNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ArrangementsAndNonarrangementTransactionsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.",
        "label": "Arrangements And Nonarrangement Transactions [Member]",
        "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative [Domain]"
       }
      }
     },
     "localname": "ArrangementsAndNonarrangementTransactionsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AssetImpairmentCharges": {
     "auth_ref": [
      "r76",
      "r165"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.",
        "label": "Asset Impairment Charges",
        "verboseLabel": "Impairment charges"
       }
      }
     },
     "localname": "AssetImpairmentCharges",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_Assets": {
     "auth_ref": [
      "r129",
      "r372",
      "r385"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets",
        "totalLabel": "Total assets"
       }
      }
     },
     "localname": "Assets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Assets [Abstract]",
        "terseLabel": "Assets"
       }
      }
     },
     "localname": "AssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsCurrent": {
     "auth_ref": [
      "r5",
      "r7",
      "r51"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets, Current",
        "totalLabel": "Total current assets"
       }
      }
     },
     "localname": "AssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Assets, Current [Abstract]",
        "terseLabel": "Current assets:"
       }
      }
     },
     "localname": "AssetsCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AwardTypeAxis": {
     "auth_ref": [
      "r209",
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of award under share-based payment arrangement.",
        "label": "Award Type [Axis]"
       }
      }
     },
     "localname": "AwardTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BalanceSheetLocationAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by location on balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Axis]"
       }
      }
     },
     "localname": "BalanceSheetLocationAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BalanceSheetLocationDomain": {
     "auth_ref": [
      "r300",
      "r301"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Location in the balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Domain]",
        "terseLabel": "Balance Sheet Location [Domain]"
       }
      }
     },
     "localname": "BalanceSheetLocationDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BasisOfAccountingPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).",
        "label": "Basis of Accounting, Policy [Policy Text Block]",
        "terseLabel": "Basis of Presentation"
       }
      }
     },
     "localname": "BasisOfAccountingPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_BuildingMember": {
     "auth_ref": [
      "r167"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Facility held for productive use including, but not limited to, office, production, storage and distribution facilities.",
        "label": "Building [Member]",
        "terseLabel": "Buildings"
       }
      }
     },
     "localname": "BuildingMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CapitalizedComputerSoftwareAdditions": {
     "auth_ref": [
      "r158"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Additions made to capitalized computer software costs during the period.",
        "label": "Capitalized Computer Software, Additions",
        "terseLabel": "Capitalized computer software, additions"
       }
      }
     },
     "localname": "CapitalizedComputerSoftwareAdditions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CapitalizedContractCostAmortizationPeriod": {
     "auth_ref": [
      "r149"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Capitalized Contract Cost, Amortization Period",
        "terseLabel": "Amortization period of capitalized contract costs"
       }
      }
     },
     "localname": "CapitalizedContractCostAmortizationPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_CashAndCashEquivalentsAtCarryingValue": {
     "auth_ref": [
      "r2",
      "r29",
      "r78"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesReconciliationOfCashCashEquivalentsAndRestrictedCashDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
       "weight": 1.0
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of 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. Excludes cash and cash equivalents within disposal group and discontinued operation.",
        "label": "Cash and Cash Equivalents, at Carrying Value",
        "terseLabel": "Cash and cash equivalents",
        "verboseLabel": "Cash and cash equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsAtCarryingValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesReconciliationOfCashCashEquivalentsAndRestrictedCashDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsPolicyTextBlock": {
     "auth_ref": [
      "r13",
      "r79",
      "r83"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.",
        "label": "Cash and Cash Equivalents, Policy [Policy Text Block]",
        "terseLabel": "Cash and Cash Equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy": {
     "auth_ref": [
      "r13",
      "r79",
      "r83",
      "r371"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Entity's cash and cash equivalents accounting policy with respect to restricted balances.  Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.",
        "label": "Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]",
        "terseLabel": "Restricted Cash"
       }
      }
     },
     "localname": "CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": {
     "auth_ref": [
      "r72",
      "r78",
      "r81"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesReconciliationOfCashCashEquivalentsAndRestrictedCashDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents",
        "periodEndLabel": "Cash, cash equivalents and restricted cash, end of period",
        "periodStartLabel": "Cash, cash equivalents and restricted cash, beginning of period",
        "totalLabel": "Cash, cash equivalents and restricted cash"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesReconciliationOfCashCashEquivalentsAndRestrictedCashDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect": {
     "auth_ref": [
      "r72",
      "r304"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect",
        "totalLabel": "(Decrease) increase in cash, cash equivalents and restricted cash"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]",
        "terseLabel": "Supplemental Information for Non-cash Investing and Financing Activities"
       }
      }
     },
     "localname": "CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Commitments and Contingencies"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": {
     "auth_ref": [
      "r173",
      "r175"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for commitments and contingencies.",
        "label": "Commitments and Contingencies Disclosure [Text Block]",
        "verboseLabel": "Commitments and Contingencies"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingencies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CommonStockCapitalSharesReservedForFutureIssuance": {
     "auth_ref": [
      "r46"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Aggregate number of common shares reserved for future issuance.",
        "label": "Common Stock, Capital Shares Reserved for Future Issuance",
        "terseLabel": "Common stock reserved for issuance"
       }
      }
     },
     "localname": "CommonStockCapitalSharesReservedForFutureIssuance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Stock that is subordinate to all other stock of the issuer.",
        "label": "Common Stock [Member]",
        "terseLabel": "Common Stock"
       }
      }
     },
     "localname": "CommonStockMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommonStockParOrStatedValuePerShare": {
     "auth_ref": [
      "r23"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Face amount or stated value per share of common stock.",
        "label": "Common Stock, Par or Stated Value Per Share",
        "terseLabel": "Common stock par value (in dollars per share)",
        "verboseLabel": "Common stock, par value"
       }
      }
     },
     "localname": "CommonStockParOrStatedValuePerShare",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_CommonStockSharesAuthorized": {
     "auth_ref": [
      "r23"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.",
        "label": "Common Stock, Shares Authorized",
        "terseLabel": "Common stock, authorized"
       }
      }
     },
     "localname": "CommonStockSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesIssued": {
     "auth_ref": [
      "r23"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.",
        "label": "Common Stock, Shares, Issued",
        "terseLabel": "Common stock, shares issued",
        "verboseLabel": "Common stock, issued"
       }
      }
     },
     "localname": "CommonStockSharesIssued",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesOutstanding": {
     "auth_ref": [
      "r23",
      "r181"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.",
        "label": "Common Stock, Shares, Outstanding",
        "terseLabel": "Common stock, outstanding shares",
        "verboseLabel": "Common stock, outstanding"
       }
      }
     },
     "localname": "CommonStockSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockValue": {
     "auth_ref": [
      "r23"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.",
        "label": "Common Stock, Value, Issued",
        "terseLabel": "Common stock; $0.01 par value; 500,000,000 shares authorized; 64,106,061 and 63,609,684 shares issued and outstanding, respectively"
       }
      }
     },
     "localname": "CommonStockValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CompensationAndEmployeeBenefitPlansTextBlock": {
     "auth_ref": [
      "r198",
      "r199",
      "r205",
      "r244"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.",
        "label": "Compensation and Employee Benefit Plans [Text Block]",
        "terseLabel": "Employee Benefit Plan"
       }
      }
     },
     "localname": "CompensationAndEmployeeBenefitPlansTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlan"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CompensationAndRetirementDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Employee Benefit Plan"
       }
      }
     },
     "localname": "CompensationAndRetirementDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CompensationRelatedCostsPolicyTextBlock": {
     "auth_ref": [
      "r82",
      "r212"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for salaries, bonuses, incentive awards, postretirement and postemployment benefits granted to employees, including equity-based arrangements; discloses methodologies for measurement, and the bases for recognizing related assets and liabilities and recognizing and reporting compensation expense.",
        "label": "Compensation Related Costs, Policy [Policy Text Block]",
        "terseLabel": "Stock-Based Compensation"
       }
      }
     },
     "localname": "CompensationRelatedCostsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ComponentsOfDeferredTaxAssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Components of Deferred Tax Assets [Abstract]",
        "terseLabel": "Deferred tax assets"
       }
      }
     },
     "localname": "ComponentsOfDeferredTaxAssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Components of Deferred Tax Assets and Liabilities [Abstract]",
        "verboseLabel": "Tax effects of temporary differences:"
       }
      }
     },
     "localname": "ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ComputerEquipmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Long lived, depreciable assets that are used in the creation, maintenance and utilization of information systems.",
        "label": "Computer Equipment [Member]",
        "terseLabel": "Computer hardware and software"
       }
      }
     },
     "localname": "ComputerEquipmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock": {
     "auth_ref": [
      "r95",
      "r287"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document.",
        "label": "Condensed Financial Information of Parent Company Only Disclosure [Text Block]",
        "terseLabel": "Condensed Financial Information of Registrant"
       }
      }
     },
     "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrant"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConsolidationPolicyTextBlock": {
     "auth_ref": [
      "r83",
      "r290",
      "r296",
      "r298"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting.  The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.",
        "label": "Consolidation, Policy [Policy Text Block]",
        "verboseLabel": "Consolidation"
       }
      }
     },
     "localname": "ConsolidationPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConstructionInProgressMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.",
        "label": "Construction In Progress [Member]",
        "terseLabel": "Construction in progress"
       }
      }
     },
     "localname": "ConstructionInProgressMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ContractWithCustomerLiability": {
     "auth_ref": [
      "r188",
      "r189",
      "r192"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.",
        "label": "Gift Card Liability, Current",
        "terseLabel": "Gift card liability"
       }
      }
     },
     "localname": "ContractWithCustomerLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails",
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractWithCustomerLiabilityRevenueRecognized": {
     "auth_ref": [
      "r193"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.",
        "label": "Contract with Customer, Liability, Revenue Recognized",
        "terseLabel": "Revenue recognized"
       }
      }
     },
     "localname": "ContractWithCustomerLiabilityRevenueRecognized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostOfGoodsAndServicesSold": {
     "auth_ref": [
      "r61"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_GrossProfit",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.",
        "label": "Cost of Goods and Services Sold",
        "terseLabel": "Cost of sales"
       }
      }
     },
     "localname": "CostOfGoodsAndServicesSold",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostOfSalesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Primary financial statement caption encompassing cost of sales.",
        "label": "Cost Of Sales [Member]",
        "terseLabel": "Cost of Sales"
       }
      }
     },
     "localname": "CostOfSalesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CostOfSalesPolicyTextBlock": {
     "auth_ref": [
      "r196"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for cost of product sold and service rendered.",
        "label": "Cost of Sales, Policy [Policy Text Block]",
        "terseLabel": "Cost of Sales"
       }
      }
     },
     "localname": "CostOfSalesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CreditFacilityAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
        "label": "Credit Facility [Axis]"
       }
      }
     },
     "localname": "CreditFacilityAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CreditFacilityDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
        "label": "Credit Facility [Domain]",
        "terseLabel": "Credit Facility [Domain]"
       }
      }
     },
     "localname": "CreditFacilityDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CumulativeEffectOnRetainedEarningsNetOfTax1": {
     "auth_ref": [
      "r102"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the cumulative effect on retained earnings net of related income tax effect.",
        "label": "Cumulative Effect on Retained Earnings, Net of Tax",
        "terseLabel": "Adoption of ASU No. 2016-02, Leases"
       }
      }
     },
     "localname": "CumulativeEffectOnRetainedEarningsNetOfTax1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentFederalTaxExpenseBenefit": {
     "auth_ref": [
      "r87",
      "r277",
      "r282"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Current Federal Tax Expense (Benefit)",
        "terseLabel": "Federal"
       }
      }
     },
     "localname": "CurrentFederalTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Current Income Tax Expense (Benefit), Continuing Operations [Abstract]",
        "terseLabel": "Current income tax expense"
       }
      }
     },
     "localname": "CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CurrentStateAndLocalTaxExpenseBenefit": {
     "auth_ref": [
      "r87",
      "r277",
      "r282"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Current State and Local Tax Expense (Benefit)",
        "terseLabel": "State"
       }
      }
     },
     "localname": "CurrentStateAndLocalTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Long-Term Debt"
       }
      }
     },
     "localname": "DebtDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtDisclosureTextBlock": {
     "auth_ref": [
      "r180"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.",
        "label": "Debt Disclosure [Text Block]",
        "verboseLabel": "Revolving Line of Credit"
       }
      }
     },
     "localname": "DebtDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCredit"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DebtInstrumentBasisSpreadOnVariableRate1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage points added to the reference rate to compute the variable rate on the debt instrument.",
        "label": "Debt Instrument, Basis Spread on Variable Rate",
        "terseLabel": "Basis spread on variable rate",
        "verboseLabel": "Basis spread (as a percent)"
       }
      }
     },
     "localname": "DebtInstrumentBasisSpreadOnVariableRate1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentCarryingAmount": {
     "auth_ref": [
      "r19",
      "r178",
      "r375",
      "r384"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.",
        "label": "Long-term Debt, Gross",
        "terseLabel": "Total debt",
        "verboseLabel": "Outstanding principal amount"
       }
      }
     },
     "localname": "DebtInstrumentCarryingAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentFaceAmount": {
     "auth_ref": [
      "r309",
      "r311"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Face (par) amount of debt instrument at time of issuance.",
        "label": "Debt Instrument, Face Amount",
        "terseLabel": "Debt instrument, face value"
       }
      }
     },
     "localname": "DebtInstrumentFaceAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentInterestRateDuringPeriod": {
     "auth_ref": [
      "r42",
      "r309"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The average effective interest rate during the reporting period.",
        "label": "Debt Instrument, Interest Rate During Period",
        "terseLabel": "Effective interest rate (as a percent)"
       }
      }
     },
     "localname": "DebtInstrumentInterestRateDuringPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentInterestRateStatedPercentage": {
     "auth_ref": [
      "r42"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.",
        "label": "Debt Instrument, Interest Rate, Stated Percentage",
        "terseLabel": "Interest rate, stated percentage"
       }
      }
     },
     "localname": "DebtInstrumentInterestRateStatedPercentage",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Debt Instrument [Line Items]"
       }
      }
     },
     "localname": "DebtInstrumentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentPeriodicPayment": {
     "auth_ref": [
      "r43",
      "r381"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the required periodic payments including both interest and principal payments.",
        "label": "Debt Instrument, Periodic Payment",
        "verboseLabel": "Installment payable"
       }
      }
     },
     "localname": "DebtInstrumentPeriodicPayment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentTable": {
     "auth_ref": [
      "r43",
      "r90",
      "r182",
      "r183",
      "r184",
      "r185",
      "r308",
      "r309",
      "r311",
      "r382"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
        "label": "Schedule of Long-term Debt Instruments [Table]"
       }
      }
     },
     "localname": "DebtInstrumentTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtWeightedAverageInterestRate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average interest rate of debt outstanding.",
        "label": "Debt, Weighted Average Interest Rate",
        "terseLabel": "Weighted average interest rate (as a percent)"
       }
      }
     },
     "localname": "DebtWeightedAverageInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DeferredChargesPolicyTextBlock": {
     "auth_ref": [
      "r34",
      "r83"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for deferral and amortization of significant deferred charges.",
        "label": "Deferred Charges, Policy [Policy Text Block]",
        "terseLabel": "Debt Issuance Costs"
       }
      }
     },
     "localname": "DeferredChargesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DeferredCompensationArrangementWithIndividualRequisiteServicePeriod1": {
     "auth_ref": [
      "r197",
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Deferred Compensation Arrangement with Individual, Requisite Service Period",
        "terseLabel": "Minimum service period"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualRequisiteServicePeriod1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_DeferredFederalIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r87",
      "r278",
      "r282"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Federal Income Tax Expense (Benefit)",
        "terseLabel": "Federal"
       }
      }
     },
     "localname": "DeferredFederalIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredFinanceCostsNoncurrentNet": {
     "auth_ref": [
      "r34",
      "r310"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.",
        "label": "Debt Issuance Costs, Current, Net",
        "terseLabel": "Debt issuance costs, net"
       }
      }
     },
     "localname": "DeferredFinanceCostsNoncurrentNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxAssetsNet": {
     "auth_ref": [
      "r271"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 8.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.",
        "label": "Deferred Tax Assets, Net of Valuation Allowance",
        "terseLabel": "Noncurrent deferred tax asset"
       }
      }
     },
     "localname": "DeferredIncomeTaxAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r76",
      "r87",
      "r278",
      "r282"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Income Tax Expense (Benefit)",
        "terseLabel": "Deferred income taxes"
       }
      }
     },
     "localname": "DeferredIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]",
        "terseLabel": "Deferred income tax expense (benefit)"
       }
      }
     },
     "localname": "DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredIncomeTaxLiabilities": {
     "auth_ref": [
      "r20",
      "r21",
      "r268",
      "r374",
      "r383"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredTaxAssetsLiabilitiesNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences.",
        "label": "Deferred Tax Liabilities, Gross",
        "negatedTotalLabel": "Total deferred tax liabilities"
       }
      }
     },
     "localname": "DeferredIncomeTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredLeaseRevenueMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Rate action of a regulator resulting in capitalization or accrual of rental payments received in advance.",
        "label": "Deferred Lease Revenue [Member]",
        "terseLabel": "Deferred rent"
       }
      }
     },
     "localname": "DeferredLeaseRevenueMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DeferredRentCreditCurrent": {
     "auth_ref": [
      "r40",
      "r313"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For a classified balance sheet, the cumulative difference as of the balance sheet date between the payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, within one year of the balance sheet date.",
        "label": "Deferred Rent Credit, Current",
        "terseLabel": "Current portion of deferred rent"
       }
      }
     },
     "localname": "DeferredRentCreditCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredRentCreditNoncurrent": {
     "auth_ref": [
      "r45",
      "r313"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date.",
        "label": "Deferred Rent Credit, Noncurrent",
        "terseLabel": "Deferred rent"
       }
      }
     },
     "localname": "DeferredRentCreditNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r87",
      "r278",
      "r282"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred State and Local Income Tax Expense (Benefit)",
        "terseLabel": "State"
       }
      }
     },
     "localname": "DeferredStateAndLocalIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsDeferredGainOnSaleLeasebackTransaction": {
     "auth_ref": [
      "r249",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from a gain reported for tax purposes on sale and leaseback transactions in accordance with enacted tax laws.",
        "label": "Deferred Tax Assets, Deferred Gain on Sale Leaseback Transaction",
        "terseLabel": "Deferred gains",
        "verboseLabel": "Deferred tax asset"
       }
      }
     },
     "localname": "DeferredTaxAssetsDeferredGainOnSaleLeasebackTransaction",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsDeferredIncome": {
     "auth_ref": [
      "r249",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.",
        "label": "Deferred Tax Assets, Deferred Income",
        "terseLabel": "Deferred revenue"
       }
      }
     },
     "localname": "DeferredTaxAssetsDeferredIncome",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.",
        "label": "Deferred Tax Assets, Goodwill and Intangible Assets",
        "terseLabel": "Intangible assets"
       }
      }
     },
     "localname": "DeferredTaxAssetsGoodwillAndIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsGross": {
     "auth_ref": [
      "r269"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredTaxAssetsLiabilitiesNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "label": "Deferred Tax Assets, Gross",
        "terseLabel": "Deferred tax assets",
        "totalLabel": "Total deferred tax assets"
       }
      }
     },
     "localname": "DeferredTaxAssetsGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquityParenthetical"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsInventory": {
     "auth_ref": [
      "r249",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 12.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.",
        "label": "Deferred Tax Assets, Inventory",
        "terseLabel": "Inventory"
       }
      }
     },
     "localname": "DeferredTaxAssetsInventory",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsLiabilitiesNet": {
     "auth_ref": [
      "r271"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.",
        "label": "Deferred Tax Assets, Net",
        "totalLabel": "Net deferred tax asset"
       }
      }
     },
     "localname": "DeferredTaxAssetsLiabilitiesNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards": {
     "auth_ref": [
      "r248",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.",
        "label": "Deferred Tax Assets, Operating Loss Carryforwards",
        "verboseLabel": "Net operating losses"
       }
      }
     },
     "localname": "DeferredTaxAssetsOperatingLossCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsOther": {
     "auth_ref": [
      "r249",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.",
        "label": "Deferred Tax Assets, Other",
        "terseLabel": "Other, net"
       }
      }
     },
     "localname": "DeferredTaxAssetsOther",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits": {
     "auth_ref": [
      "r248",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.",
        "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits",
        "verboseLabel": "Deferred compensation"
       }
      }
     },
     "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent": {
     "auth_ref": [
      "r248",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 8.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent.",
        "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent",
        "terseLabel": "Deferred rent"
       }
      }
     },
     "localname": "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsValuationAllowance": {
     "auth_ref": [
      "r270"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.",
        "label": "Deferred Tax Assets, Valuation Allowance",
        "verboseLabel": "Valuation allowance"
       }
      }
     },
     "localname": "DeferredTaxAssetsValuationAllowance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets": {
     "auth_ref": [
      "r249",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.",
        "label": "Deferred Tax Liabilities, Intangible Assets",
        "negatedLabel": "Trade name"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesNetAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Deferred Tax Liabilities, Net [Abstract]",
        "terseLabel": "Deferred tax liabilities"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesNetAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment": {
     "auth_ref": [
      "r249",
      "r275",
      "r276"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.",
        "label": "Deferred Tax Liabilities, Property, Plant and Equipment",
        "negatedLabel": "Property and equipment"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedContributionPlanCostRecognized": {
     "auth_ref": [
      "r204"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cost for defined contribution plan.",
        "label": "Defined Contribution Plan, Cost Recognized",
        "terseLabel": "Matching contribution expense"
       }
      }
     },
     "localname": "DefinedContributionPlanCostRecognized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedContributionPlanDisclosureLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Defined Contribution Plan Disclosure [Line Items]"
       }
      }
     },
     "localname": "DefinedContributionPlanDisclosureLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.",
        "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay",
        "terseLabel": "Percentage of eligible employee compensation matched"
       }
      }
     },
     "localname": "DefinedContributionPlanEmployerMatchingContributionPercent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage employer matches of the employee's percentage contribution matched.",
        "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Match",
        "terseLabel": "Employer's matching percentage"
       }
      }
     },
     "localname": "DefinedContributionPlanEmployerMatchingContributionPercentOfMatch",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.",
        "label": "Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent",
        "terseLabel": "Participants contribution (as a percent)"
       }
      }
     },
     "localname": "DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedContributionPlanTable": {
     "auth_ref": [
      "r204"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans.",
        "label": "Defined Contribution Plan [Table]"
       }
      }
     },
     "localname": "DefinedContributionPlanTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEmployeeBenefitPlanDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DepreciationAndAmortization": {
     "auth_ref": [
      "r76",
      "r166"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.",
        "label": "Depreciation, Depletion and Amortization, Nonproduction",
        "terseLabel": "Depreciation and amortization"
       }
      }
     },
     "localname": "DepreciationAndAmortization",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepreciationDepletionAndAmortization": {
     "auth_ref": [
      "r76",
      "r126"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.",
        "label": "Depreciation, Depletion and Amortization",
        "terseLabel": "Depreciation and amortization",
        "verboseLabel": "Depreciation and amortization expense"
       }
      }
     },
     "localname": "DepreciationDepletionAndAmortization",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DisaggregationOfRevenueLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Disaggregation of Revenue [Line Items]",
        "terseLabel": "Revenue Recognition"
       }
      }
     },
     "localname": "DisaggregationOfRevenueLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
        "label": "Disaggregation of Revenue [Table]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueTableTextBlock": {
     "auth_ref": [
      "r191"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
        "label": "Disaggregation of Revenue [Table Text Block]",
        "terseLabel": "Schedule of disaggregation of revenue"
       }
      }
     },
     "localname": "DisaggregationOfRevenueTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": {
     "auth_ref": [
      "r244"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for share-based payment arrangement.",
        "label": "Disclosure of Compensation Related Costs, Share-based Payments [Text Block]",
        "terseLabel": "Stock-Based Compensation"
       }
      }
     },
     "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensation"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Stock-Based Compensation"
       }
      }
     },
     "localname": "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DueToAffiliateCurrent": {
     "auth_ref": [
      "r17",
      "r88",
      "r343",
      "r395"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Due to Affiliate, Current",
        "terseLabel": "Payable to subsidiaries"
       }
      }
     },
     "localname": "DueToAffiliateCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EarningsPerShareAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Earnings Per Share",
        "terseLabel": "Earnings per share:"
       }
      }
     },
     "localname": "EarningsPerShareAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EarningsPerShareBasic": {
     "auth_ref": [
      "r58",
      "r99",
      "r105",
      "r107",
      "r108",
      "r109",
      "r112",
      "r379",
      "r392"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.",
        "label": "Earnings Per Share, Basic",
        "terseLabel": "Basic",
        "verboseLabel": "Basic net income (loss) per common share"
       }
      }
     },
     "localname": "EarningsPerShareBasic",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails",
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_EarningsPerShareBasicAndDilutedAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Earnings Per Share, Basic and Diluted [Abstract]",
        "terseLabel": "Net (loss) income per common share:"
       }
      }
     },
     "localname": "EarningsPerShareBasicAndDilutedAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EarningsPerShareDiluted": {
     "auth_ref": [
      "r58",
      "r99",
      "r105",
      "r107",
      "r108",
      "r109",
      "r112",
      "r379",
      "r392"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.",
        "label": "Earnings Per Share, Diluted",
        "terseLabel": "Diluted",
        "verboseLabel": "Diluted net income (loss) per common share"
       }
      }
     },
     "localname": "EarningsPerShareDiluted",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails",
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_EarningsPerShareReconciliationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Earnings Per Share Reconciliation [Abstract]"
       }
      }
     },
     "localname": "EarningsPerShareReconciliationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EarningsPerShareTextBlock": {
     "auth_ref": [
      "r113"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for earnings per share.",
        "label": "Earnings Per Share [Text Block]",
        "verboseLabel": "Earnings Per Share"
       }
      }
     },
     "localname": "EarningsPerShareTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShare"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateContinuingOperations": {
     "auth_ref": [
      "r93",
      "r255",
      "r256"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "label": "Effective Income Tax Rate Reconciliation, Percent",
        "terseLabel": "Effective tax rate (as a percent)"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateContinuingOperations",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r255",
      "r256",
      "r281"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).",
        "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent",
        "terseLabel": "U.S. federal corporate tax rate"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EmployeeRelatedLiabilitiesCurrent": {
     "auth_ref": [
      "r40"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Employee-related Liabilities, Current",
        "verboseLabel": "Accrued payroll and other employee-related liabilities"
       }
      }
     },
     "localname": "EmployeeRelatedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": {
     "auth_ref": [
      "r237"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cost not yet recognized for nonvested award under share-based payment arrangement.",
        "label": "Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeStockOptionMember": {
     "auth_ref": [
      "r235"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Share-based payment arrangement granting right, subject to vesting and other restrictions, to purchase or sell certain number of shares at predetermined price for specified period of time.",
        "label": "Employee Stock Option [Member]",
        "terseLabel": "Stock option"
       }
      }
     },
     "localname": "EmployeeStockOptionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquityComponentDomain": {
     "auth_ref": [
      "r181"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.",
        "label": "Equity Component [Domain]",
        "terseLabel": "Equity Component [Domain]"
       }
      }
     },
     "localname": "EquityComponentDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueByFairValueHierarchyLevelAxis": {
     "auth_ref": [
      "r200",
      "r201",
      "r203",
      "r303",
      "r356"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.",
        "label": "Fair Value Hierarchy and NAV [Axis]"
       }
      }
     },
     "localname": "FairValueByFairValueHierarchyLevelAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueInputsLevel2Member": {
     "auth_ref": [
      "r200",
      "r201",
      "r203",
      "r303",
      "r357"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.",
        "label": "Fair Value Inputs Level2 [Member]",
        "terseLabel": "Level 2"
       }
      }
     },
     "localname": "FairValueInputsLevel2Member",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueMeasurementPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities.",
        "label": "Fair Value Measurement, Policy [Policy Text Block]",
        "terseLabel": "Fair Value Measurements"
       }
      }
     },
     "localname": "FairValueMeasurementPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.",
        "label": "Fair Value Measurements Fair Value Hierarchy [Domain]",
        "terseLabel": "Fair Value Hierarchy and NAV [Domain]"
       }
      }
     },
     "localname": "FairValueMeasurementsFairValueHierarchyDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FinanceLeaseInterestExpense": {
     "auth_ref": [
      "r325",
      "r329",
      "r338"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LeaseCost",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of interest expense on finance lease liability.",
        "label": "Finance Lease, Interest Expense",
        "verboseLabel": "Interest on lease liabilities"
       }
      }
     },
     "localname": "FinanceLeaseInterestExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Finance Lease Liabilities, Payments, Due [Abstract]",
        "terseLabel": "Finance Leases"
       }
      }
     },
     "localname": "FinanceLeaseLiabilitiesPaymentsDueAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FinanceLeaseLiability": {
     "auth_ref": [
      "r324",
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      },
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from finance lease.",
        "label": "Finance Lease, Liability",
        "terseLabel": "Obligations under finance leases",
        "totalLabel": "Present value of lease liabilities"
       }
      }
     },
     "localname": "FinanceLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityCurrent": {
     "auth_ref": [
      "r324"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": 1.0,
       "parentTag": "us-gaap_FinanceLeaseLiability",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.",
        "label": "Finance Lease, Liability, Current",
        "negatedLabel": "Less current obligations"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityNoncurrent": {
     "auth_ref": [
      "r324"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": 2.0,
       "parentTag": "us-gaap_FinanceLeaseLiability",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.",
        "label": "Finance Lease, Liability, Noncurrent",
        "terseLabel": "Long-term lease obligations"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityPaymentsDue": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for finance lease.",
        "label": "Finance Lease, Liability, Payments, Due",
        "totalLabel": "Total lease payments"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityPaymentsDue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 6.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for finance lease, due after fifth fiscal year following latest fiscal year.",
        "label": "Finance Lease, Liability, Payments, Due after Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityPaymentsDueAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 1.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for finance lease, due in next fiscal year following latest fiscal year.",
        "label": "Finance Lease, Liability, Payments, Due Next Twelve Months",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityPaymentsDueNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 5.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for finance lease, due in fifth fiscal year following latest fiscal year.",
        "label": "Finance Lease, Liability, Payments, Due Year Five",
        "terseLabel": "2025"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityPaymentsDueYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 4.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for finance lease, due in fourth fiscal year following latest fiscal year.",
        "label": "Finance Lease, Liability, Payments, Due Year Four",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityPaymentsDueYearFour",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 3.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for finance lease, due in third fiscal year following latest fiscal year.",
        "label": "Finance Lease, Liability, Payments, Due Year Three",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityPaymentsDueYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 2.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for finance lease, due in second fiscal year following latest fiscal year.",
        "label": "Finance Lease, Liability, Payments, Due Year Two",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityPaymentsDueYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_FinanceLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.",
        "label": "Finance Lease, Liability, Undiscounted Excess Amount",
        "negatedLabel": "Less: amount representing interest"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityUndiscountedExcessAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeasePrincipalPayments": {
     "auth_ref": [
      "r326",
      "r333"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash outflow for principal payment on finance lease.",
        "label": "Finance Lease, Principal Payments",
        "terseLabel": "Cash paid for finance lease liabilities"
       }
      }
     },
     "localname": "FinanceLeasePrincipalPayments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseRightOfUseAssetAmortization": {
     "auth_ref": [
      "r325",
      "r329",
      "r338"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_LeaseCost",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of amortization expense attributable to right-of-use asset from finance lease.",
        "label": "Finance Lease, Right-of-Use Asset, Amortization",
        "terseLabel": "Amortization of right-of-use assets"
       }
      }
     },
     "localname": "FinanceLeaseRightOfUseAssetAmortization",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent": {
     "auth_ref": [
      "r335",
      "r338"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average discount rate for finance lease calculated at point in time.",
        "label": "Finance Lease, Weighted Average Discount Rate, Percent",
        "terseLabel": "Weighted average discount rate - Finance leases"
       }
      }
     },
     "localname": "FinanceLeaseWeightedAverageDiscountRatePercent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1": {
     "auth_ref": [
      "r334",
      "r338"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Finance Lease, Weighted Average Remaining Lease Term",
        "terseLabel": "Weighted average remaining lease term - Finance leases (years)"
       }
      }
     },
     "localname": "FinanceLeaseWeightedAverageRemainingLeaseTerm1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_FinancialInstrumentAxis": {
     "auth_ref": [
      "r135",
      "r136",
      "r137",
      "r138",
      "r139",
      "r140",
      "r141",
      "r142",
      "r143"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of financial instrument.",
        "label": "Financial Instrument [Axis]"
       }
      }
     },
     "localname": "FinancialInstrumentAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetUsefulLife": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Finite-Lived Intangible Asset, Useful Life",
        "terseLabel": "Capitalized cost amortization period of software"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsNet": {
     "auth_ref": [
      "r160"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Finite-Lived Intangible Assets, Net",
        "terseLabel": "Carrying value of trade name"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiscalPeriod": {
     "auth_ref": [
      "r288",
      "r295",
      "r297"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for determining an entity's fiscal year or other fiscal period. This disclosure may include identification of the fiscal period end-date, the length of the fiscal period, any reporting period lag between the entity and its subsidiaries, or equity investees. If a reporting lag exists, the closing date of the entity having a different period end is generally noted, along with an explanation of the necessity for using different closing dates. Any intervening events that materially affect the entity's financial position or results of operations are generally also disclosed.",
        "label": "Fiscal Period, Policy [Policy Text Block]",
        "verboseLabel": "Fiscal Year"
       }
      }
     },
     "localname": "FiscalPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit": {
     "auth_ref": [
      "r351",
      "r352"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of fresh-start adjustment to retained earnings or deficit.",
        "label": "Fresh-Start Adjustment, Increase (Decrease), Retained Earnings (Deficit)",
        "terseLabel": "Adjustment to retained earnings"
       }
      }
     },
     "localname": "FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FurnitureAndFixturesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.",
        "label": "Furniture And Fixtures [Member]",
        "terseLabel": "Equipment, furniture and fixtures"
       }
      }
     },
     "localname": "FurnitureAndFixturesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Goodwill": {
     "auth_ref": [
      "r150",
      "r152"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill.",
        "terseLabel": "Goodwill"
       }
      }
     },
     "localname": "Goodwill",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy": {
     "auth_ref": [
      "r83",
      "r154"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for goodwill. This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined.",
        "label": "Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]",
        "terseLabel": "Goodwill"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsGoodwillPolicy",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GoodwillImpairmentLoss": {
     "auth_ref": [
      "r76",
      "r151",
      "r153",
      "r155"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill, Impairment Loss",
        "terseLabel": "Impairment charges"
       }
      }
     },
     "localname": "GoodwillImpairmentLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GrossProfit": {
     "auth_ref": [
      "r60"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.",
        "label": "Gross Profit",
        "totalLabel": "Gross profit",
        "verboseLabel": "Gross profit"
       }
      }
     },
     "localname": "GrossProfit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_HostingArrangementServiceContractImplementationCostCapitalizedBeforeAccumulatedAmortization": {
     "auth_ref": [
      "r163",
      "r167"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, before accumulated amortization, of capitalized implementation cost from hosting arrangement that is service contract.",
        "label": "Hosting Arrangement, Service Contract, Implementation Cost, Capitalized, before Accumulated Amortization",
        "terseLabel": "Implementation costs"
       }
      }
     },
     "localname": "HostingArrangementServiceContractImplementationCostCapitalizedBeforeAccumulatedAmortization",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IPOMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "First sale of stock by a private company to the public.",
        "label": "I P O [Member]",
        "terseLabel": "IPO"
       }
      }
     },
     "localname": "IPOMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember": {
     "auth_ref": [
      "r350"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Family member whom a principal owner or a member of management might control or influence, or by whom they might be controlled or influenced, because of the family relationship.",
        "label": "Immediate Family Member Of Management Or Principal Owner [Member]",
        "terseLabel": "MMI"
       }
      }
     },
     "localname": "ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill": {
     "auth_ref": [
      "r76",
      "r162"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.",
        "label": "Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)",
        "verboseLabel": "Impairment of indefinite-lived asset, trade name"
       }
      }
     },
     "localname": "ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ImpairmentOfLongLivedAssetsHeldForUse": {
     "auth_ref": [
      "r76",
      "r165",
      "r170",
      "r398"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).",
        "label": "Impairment of Long-Lived Assets Held-for-use",
        "terseLabel": "Impairment of long lived asset",
        "verboseLabel": "Impairment charges"
       }
      }
     },
     "localname": "ImpairmentOfLongLivedAssetsHeldForUse",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf": {
     "auth_ref": [
      "r76",
      "r164"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.",
        "label": "Impairment of Long-Lived Assets to be Disposed of",
        "terseLabel": "Impairment charges in connection with store closure and relocation decisions"
       }
      }
     },
     "localname": "ImpairmentOfLongLivedAssetsToBeDisposedOf",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for the impairment and disposal of long-lived assets including goodwill and other intangible assets.",
        "label": "Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]",
        "terseLabel": "Impairment of Long-Lived and Indefinite-Lived Assets"
       }
      }
     },
     "localname": "ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments": {
     "auth_ref": [
      "r92"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.",
        "label": "Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest",
        "totalLabel": "(Loss) income before income taxes"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromEquityMethodInvestments": {
     "auth_ref": [
      "r56",
      "r76",
      "r127",
      "r134",
      "r377",
      "r390"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of income (loss) for proportionate share of equity method investee's income (loss).",
        "label": "Income (Loss) from Equity Method Investments",
        "terseLabel": "Net (loss) income from subsidiaries"
       }
      }
     },
     "localname": "IncomeLossFromEquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeStatementAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Consolidated Statements of Operations"
       }
      }
     },
     "localname": "IncomeStatementAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementLocationAxis": {
     "auth_ref": [
      "r171"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by location in the income statement.",
        "label": "Income Statement Location [Axis]"
       }
      }
     },
     "localname": "IncomeStatementLocationAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementLocationDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Location in the income statement.",
        "label": "Income Statement Location [Domain]",
        "terseLabel": "Income Statement Location [Domain]"
       }
      }
     },
     "localname": "IncomeStatementLocationDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxAuthorityAxis": {
     "auth_ref": [
      "r258"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by tax jurisdiction.",
        "label": "Income Tax Authority [Axis]"
       }
      }
     },
     "localname": "IncomeTaxAuthorityAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxAuthorityDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Agency, division or body classification that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.",
        "label": "Income Tax Authority [Domain]",
        "terseLabel": "Income Tax Authority [Domain]"
       }
      }
     },
     "localname": "IncomeTaxAuthorityDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxDisclosureTextBlock": {
     "auth_ref": [
      "r285"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.",
        "label": "Income Tax Disclosure [Text Block]",
        "verboseLabel": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxes"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r87",
      "r128",
      "r283"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "label": "Income Tax Expense (Benefit)",
        "terseLabel": "Income tax provision (benefit)",
        "totalLabel": "Income tax provision (benefit)"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Income Tax Expense (Benefit), Continuing Operations [Abstract]",
        "terseLabel": "Income tax provision (benefit):"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefitContinuingOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesProvisionDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Effective Income Tax Rate Reconciliation, Amount [Abstract]",
        "terseLabel": "Reconciliation between the actual income tax provision (benefit) and income tax provision (benefit) calculated at federal statutory tax rate:"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxPolicyTextBlock": {
     "auth_ref": [
      "r54",
      "r83",
      "r253",
      "r254",
      "r266",
      "r267",
      "r272",
      "r284",
      "r397"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.",
        "label": "Income Tax, Policy [Policy Text Block]",
        "terseLabel": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance": {
     "auth_ref": [
      "r252",
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.",
        "label": "Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount",
        "terseLabel": "Change in valuation allowance"
       }
      }
     },
     "localname": "IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate": {
     "auth_ref": [
      "r251",
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.",
        "label": "Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount",
        "terseLabel": "Effect of the Tax Act"
       }
      }
     },
     "localname": "IncomeTaxReconciliationChangeInEnactedTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r86",
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 10.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount",
        "terseLabel": "Income tax provision at the federal statutory rate"
       }
      }
     },
     "localname": "IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationNondeductibleExpense": {
     "auth_ref": [
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 9.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.",
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount",
        "terseLabel": "Permanent differences"
       }
      }
     },
     "localname": "IncomeTaxReconciliationNondeductibleExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses": {
     "auth_ref": [
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible impairment loss.",
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount",
        "terseLabel": "Impairment charges"
       }
      }
     },
     "localname": "IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost": {
     "auth_ref": [
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.",
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount",
        "terseLabel": "Equity-based compensation"
       }
      }
     },
     "localname": "IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes": {
     "auth_ref": [
      "r86",
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 8.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).",
        "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount",
        "terseLabel": "State income taxes, net of federal income tax effect"
       }
      }
     },
     "localname": "IncomeTaxReconciliationStateAndLocalIncomeTaxes",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationTaxCredits": {
     "auth_ref": [
      "r255",
      "r256"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.",
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Amount",
        "negatedLabel": "Tax credits"
       }
      }
     },
     "localname": "IncomeTaxReconciliationTaxCredits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesFederalStatutoryTaxRateDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxesPaidNet": {
     "auth_ref": [
      "r80"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.",
        "label": "Income Taxes Paid, Net",
        "terseLabel": "Cash paid for income taxes"
       }
      }
     },
     "localname": "IncomeTaxesPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsPayable": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.",
        "label": "Increase (Decrease) in Accounts Payable",
        "terseLabel": "Accounts payable"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsPayable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction.",
        "label": "Increase (Decrease) in Income Taxes Payable",
        "terseLabel": "Income taxes payable"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccruedIncomeTaxesPayable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccruedLiabilities": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.",
        "label": "Increase (Decrease) in Accrued Liabilities",
        "terseLabel": "Accrued liabilities"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccruedLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInInventories": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.",
        "label": "Increase (Decrease) in Inventories",
        "negatedLabel": "Inventories"
       }
      }
     },
     "localname": "IncreaseDecreaseInInventories",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Increase (Decrease) in Operating Capital [Abstract]",
        "terseLabel": "Changes in operating assets and liabilities:"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingCapitalAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherOperatingAssets": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in operating assets classified as other.",
        "label": "Increase (Decrease) in Other Operating Assets",
        "negatedLabel": "Other assets"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherOperatingAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 12.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) in prepaid expenses, and assets classified as other.",
        "label": "Increase (Decrease) in Prepaid Expense and Other Assets",
        "negatedLabel": "Prepaid expenses and other current assets"
       }
      }
     },
     "localname": "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Increase (Decrease) in Stockholders' Equity [Roll Forward]",
        "terseLabel": "Increase (Decrease) in Stockholders' Equity"
       }
      }
     },
     "localname": "IncreaseDecreaseInStockholdersEquityRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements": {
     "auth_ref": [
      "r106",
      "r111"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment",
       "weight": 1.0
      }
     },
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.",
        "label": "Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements",
        "terseLabel": "Included as dilutive",
        "verboseLabel": "Stock options and restricted stock units"
       }
      }
     },
     "localname": "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails",
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_IntangibleAssetsNetExcludingGoodwill": {
     "auth_ref": [
      "r156",
      "r159"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.",
        "label": "Intangible Assets, Net (Excluding Goodwill)",
        "terseLabel": "Trade name"
       }
      }
     },
     "localname": "IntangibleAssetsNetExcludingGoodwill",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestCapitalizationPolicyPolicyTextBlock": {
     "auth_ref": [
      "r307"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for interest capitalization.",
        "label": "Interest Capitalization, Policy [Policy Text Block]",
        "terseLabel": "Capitalized Interest"
       }
      }
     },
     "localname": "InterestCapitalizationPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InterestCostsCapitalized": {
     "auth_ref": [
      "r306"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of interest capitalized during the period.",
        "label": "Interest Costs Capitalized",
        "terseLabel": "Capitalized interest cost"
       }
      }
     },
     "localname": "InterestCostsCapitalized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestExpense": {
     "auth_ref": [
      "r55",
      "r125",
      "r305",
      "r310",
      "r380"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.",
        "label": "Interest Expense",
        "terseLabel": "Interest expense, net"
       }
      }
     },
     "localname": "InterestExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPaidNet": {
     "auth_ref": [
      "r70",
      "r73",
      "r80"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
        "label": "Interest Paid",
        "terseLabel": "Cash paid for interest"
       }
      }
     },
     "localname": "InterestPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPayableCurrent": {
     "auth_ref": [
      "r10",
      "r11",
      "r40"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Interest Payable, Current",
        "verboseLabel": "Accrued interest"
       }
      }
     },
     "localname": "InterestPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InventoryNet": {
     "auth_ref": [
      "r3",
      "r48",
      "r145"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.",
        "label": "Inventory, Net",
        "terseLabel": "Inventories, net"
       }
      }
     },
     "localname": "InventoryNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InventoryPolicyTextBlock": {
     "auth_ref": [
      "r12",
      "r49",
      "r83",
      "r114",
      "r146",
      "r147"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.",
        "label": "Inventory, Policy [Policy Text Block]",
        "terseLabel": "Inventories"
       }
      }
     },
     "localname": "InventoryPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures": {
     "auth_ref": [
      "r30"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of investment in equity method investee and investment in and advance to affiliate.",
        "label": "Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures",
        "terseLabel": "Investment in subsidiaries"
       }
      }
     },
     "localname": "InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LandMember": {
     "auth_ref": [
      "r194"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Part of earth's surface not covered by water.",
        "label": "Land [Member]",
        "terseLabel": "Land"
       }
      }
     },
     "localname": "LandMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LeaseCost": {
     "auth_ref": [
      "r336",
      "r338"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lease cost recognized by lessee for lease contract.",
        "label": "Lease, Cost",
        "totalLabel": "Total lease cost"
       }
      }
     },
     "localname": "LeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LeaseCostAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Lease, Cost [Abstract]",
        "terseLabel": "Lease cost"
       }
      }
     },
     "localname": "LeaseCostAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LeaseCostTableTextBlock": {
     "auth_ref": [
      "r336"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.",
        "label": "Lease, Cost [Table Text Block]",
        "terseLabel": "Schedule of lease costs"
       }
      }
     },
     "localname": "LeaseCostTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LeaseholdImprovementsMember": {
     "auth_ref": [
      "r167"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Additions or improvements to assets held under a lease arrangement.",
        "label": "Leasehold Improvements [Member]",
        "terseLabel": "Leasehold improvements"
       }
      }
     },
     "localname": "LeaseholdImprovementsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LeasesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Sale-Leaseback Transactions"
       }
      }
     },
     "localname": "LeasesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend": {
     "auth_ref": [
      "r328"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicates (true false) whether lessee has option to extend operating lease.",
        "label": "Lessee, Operating Lease, Existence of Option to Extend [true false]"
       }
      }
     },
     "localname": "LesseeOperatingLeaseExistenceOfOptionToExtend",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "booleanItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due",
        "totalLabel": "Total lease payments"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 6.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due after Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 1.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 5.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Five",
        "terseLabel": "2025"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFive",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 4.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Four",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFour",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 3.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Three",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc2": {
       "order": 2.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.",
        "label": "Lessee, Operating Lease, Liability, Payments, Due Year Two",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": {
     "auth_ref": [
      "r337"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.",
        "label": "Lessee, Operating Lease, Liability, Undiscounted Excess Amount",
        "negatedLabel": "Amount representing interest"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseRenewalTerm": {
     "auth_ref": [
      "r328"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Lessee, Operating Lease, Renewal Term",
        "terseLabel": "Renewal term"
       }
      }
     },
     "localname": "LesseeOperatingLeaseRenewalTerm",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_LesseeOperatingLeaseTermOfContract": {
     "auth_ref": [
      "r328"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Lessee, Operating Lease, Term of Contract",
        "terseLabel": "Lease term"
       }
      }
     },
     "localname": "LesseeOperatingLeaseTermOfContract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_LetterOfCreditMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A document typically issued by a financial institution which acts as a guarantee of payment to a beneficiary, or as the source of payment for a specific transaction (for example, wiring funds to a foreign exporter if and when specified merchandise is accepted pursuant to the terms of the letter of credit).",
        "label": "Letter Of Credit [Member]",
        "terseLabel": "Letters of Credit"
       }
      }
     },
     "localname": "LetterOfCreditMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Liabilities": {
     "auth_ref": [
      "r39"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.",
        "label": "Liabilities",
        "totalLabel": "Total liabilities"
       }
      }
     },
     "localname": "Liabilities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquity": {
     "auth_ref": [
      "r28",
      "r376",
      "r388"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.",
        "label": "Liabilities and Equity",
        "totalLabel": "Total liabilities and shareholders' equity"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Liabilities and Equity [Abstract]",
        "terseLabel": "Liabilities and Shareholders' Equity"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesCurrent": {
     "auth_ref": [
      "r41"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.",
        "label": "Liabilities, Current",
        "totalLabel": "Total current liabilities"
       }
      }
     },
     "localname": "LiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Liabilities, Current [Abstract]",
        "terseLabel": "Current liabilities:"
       }
      }
     },
     "localname": "LiabilitiesCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LienCategoryAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by category of lien, for example, but not limited to, senior or junior.",
        "label": "Lien Category [Axis]"
       }
      }
     },
     "localname": "LienCategoryAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LienCategoryDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Legal claim on the property of another party to secure the payment of a debt or the satisfaction of an obligation by category, for example, but not limited to, senior or junior.",
        "label": "Lien Category [Domain]",
        "terseLabel": "Lien Category [Domain]"
       }
      }
     },
     "localname": "LienCategoryDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LineOfCreditFacilityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Revolving Line of Credit"
       }
      }
     },
     "localname": "LineOfCreditFacilityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity": {
     "auth_ref": [
      "r37"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.",
        "label": "Line of Credit Facility, Current Borrowing Capacity",
        "verboseLabel": "Available borrowing capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityCurrentBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet": {
     "auth_ref": [
      "r91"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase (decrease) of the credit facility.",
        "label": "Line of Credit Facility, Increase (Decrease), Net",
        "terseLabel": "Increase in commitment"
       }
      }
     },
     "localname": "LineOfCreditFacilityIncreaseDecreaseForPeriodNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Line of Credit Facility [Line Items]",
        "terseLabel": "Revolving Line of Credit"
       }
      }
     },
     "localname": "LineOfCreditFacilityLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": {
     "auth_ref": [
      "r37"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.",
        "label": "Line of Credit Facility, Maximum Borrowing Capacity",
        "verboseLabel": "Maximum borrowing capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityMaximumBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity": {
     "auth_ref": [
      "r37"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).",
        "label": "Line of Credit Facility, Remaining Borrowing Capacity",
        "terseLabel": "Remaining borrowing capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityRemainingBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityTable": {
     "auth_ref": [
      "r37",
      "r90"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A table or schedule providing information pertaining to short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.",
        "label": "Line of Credit Facility [Table]"
       }
      }
     },
     "localname": "LineOfCreditFacilityTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LinesOfCreditCurrent": {
     "auth_ref": [
      "r18",
      "r373"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.",
        "label": "Line of Credit, Current",
        "terseLabel": "Revolving line of credit",
        "verboseLabel": "Outstanding under the ABL credit agreement"
       }
      }
     },
     "localname": "LinesOfCreditCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LondonInterbankOfferedRateLIBORMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest rate at which a bank borrows funds from other banks in the London interbank market.",
        "label": "London Interbank Offered Rate L I B O R [Member]",
        "terseLabel": "LIBOR"
       }
      }
     },
     "localname": "LondonInterbankOfferedRateLIBORMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LongTermDebt": {
     "auth_ref": [
      "r19",
      "r179",
      "r375",
      "r386"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt.",
        "totalLabel": "Total",
        "verboseLabel": "Carrying value of fixed rate mortgage"
       }
      }
     },
     "localname": "LongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Long-term Debt, by Current and Noncurrent [Abstract]",
        "terseLabel": "Long-Term Debt"
       }
      }
     },
     "localname": "LongTermDebtByCurrentAndNoncurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LongTermDebtByMaturityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Aggregate annual maturities of long-term debt"
       }
      }
     },
     "localname": "LongTermDebtByMaturityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LongTermDebtFairValue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.",
        "label": "Long-term Debt, Fair Value",
        "terseLabel": "Fair value of fixed rate mortgage"
       }
      }
     },
     "localname": "LongTermDebtFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths": {
     "auth_ref": [
      "r96",
      "r176"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree": {
     "auth_ref": [
      "r96",
      "r176"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Three",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo": {
     "auth_ref": [
      "r96",
      "r176"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "label": "Long-term Debt, Maturities, Repayments of Principal in Year Two",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtMaturitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtNoncurrent": {
     "auth_ref": [
      "r43"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt, Excluding Current Maturities",
        "terseLabel": "Long-term debt"
       }
      }
     },
     "localname": "LongTermDebtNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtTextBlock": {
     "auth_ref": [
      "r180"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for long-term debt.",
        "label": "Long-term Debt [Text Block]",
        "verboseLabel": "Long-Term Debt"
       }
      }
     },
     "localname": "LongTermDebtTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebt"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LongtermDebtTypeAxis": {
     "auth_ref": [
      "r43"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of long-term debt.",
        "label": "Long-term Debt, Type [Axis]"
       }
      }
     },
     "localname": "LongtermDebtTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LongtermDebtTypeDomain": {
     "auth_ref": [
      "r43",
      "r177"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
        "label": "Longterm Debt Type [Domain]",
        "terseLabel": "Long-term Debt, Type [Domain]"
       }
      }
     },
     "localname": "LongtermDebtTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.",
        "label": "Noncontrolling Interest, Ownership Percentage by Parent",
        "terseLabel": "Ownership percentage of common stock by outside investors"
       }
      }
     },
     "localname": "MinorityInterestOwnershipPercentageByNoncontrollingOwners",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivities": {
     "auth_ref": [
      "r72"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.",
        "label": "Net Cash Provided by (Used in) Financing Activities, Continuing Operations",
        "totalLabel": "Net cash provided by financing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]",
        "terseLabel": "Financing Activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivities": {
     "auth_ref": [
      "r72"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.",
        "label": "Net Cash Provided by (Used in) Investing Activities, Continuing Operations",
        "totalLabel": "Net cash used in investing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]",
        "terseLabel": "Investing Activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivities": {
     "auth_ref": [
      "r72",
      "r74",
      "r77"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
        "label": "Net Cash Provided by (Used in) Operating Activities, Continuing Operations",
        "totalLabel": "Net cash provided by operating activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]",
        "terseLabel": "Operating Activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetIncomeLoss": {
     "auth_ref": [
      "r52",
      "r53",
      "r57",
      "r77",
      "r111",
      "r378",
      "r391"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "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 (loss)",
        "totalLabel": "Net (loss) income",
        "verboseLabel": "Net (loss) income"
       }
      }
     },
     "localname": "NetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails",
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetIncomeLossAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Net Income (Loss) Attributable to Parent [Abstract]",
        "verboseLabel": "Numerator:"
       }
      }
     },
     "localname": "NetIncomeLossAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.",
        "label": "New Accounting Pronouncements, Policy [Policy Text Block]",
        "terseLabel": "Recent Accounting Pronouncements and Recently Adopted Accounting Standards"
       }
      }
     },
     "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_NotesPayableCurrent": {
     "auth_ref": [
      "r38"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.",
        "label": "Notes Payable, Current",
        "terseLabel": "Current portion of long-term debt"
       }
      }
     },
     "localname": "NotesPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NumberOfOperatingSegments": {
     "auth_ref": [],
     "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": "Number of Operating Segments",
        "verboseLabel": "Number of operating segments"
       }
      }
     },
     "localname": "NumberOfOperatingSegments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_NumberOfReportableSegments": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.",
        "label": "Number of Reportable Segments",
        "terseLabel": "Number of reportable segments"
       }
      }
     },
     "localname": "NumberOfReportableSegments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_NumberOfReportingUnits": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.",
        "label": "Number of Reporting Units",
        "terseLabel": "Number of reportable segment"
       }
      }
     },
     "localname": "NumberOfReportingUnits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_NumberOfStatesInWhichEntityOperates": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of states the entity operates in as of the balance sheet date.",
        "label": "Number of States in which Entity Operates",
        "terseLabel": "Number of states operated"
       }
      }
     },
     "localname": "NumberOfStatesInWhichEntityOperates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_NumberOfStores": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Represents the number of stores.",
        "label": "Number of Stores",
        "terseLabel": "Number of home decor superstores"
       }
      }
     },
     "localname": "NumberOfStores",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_OperatingExpenses": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.",
        "label": "Operating Expenses",
        "totalLabel": "Total operating expenses"
       }
      }
     },
     "localname": "OperatingExpenses",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Operating Expenses [Abstract]",
        "terseLabel": "Operating expenses"
       }
      }
     },
     "localname": "OperatingExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingIncomeLoss": {
     "auth_ref": [],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net result for the period of deducting operating expenses from operating revenues.",
        "label": "Operating Income (Loss)",
        "totalLabel": "Operating (loss) income",
        "verboseLabel": "Operating income (loss)"
       }
      }
     },
     "localname": "OperatingIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseCost": {
     "auth_ref": [
      "r330",
      "r338"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LeaseCost",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.",
        "label": "Operating Lease, Cost",
        "terseLabel": "Operating lease cost"
       }
      }
     },
     "localname": "OperatingLeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Operating Lease Liabilities, Payments Due [Abstract]",
        "terseLabel": "Operating Leases"
       }
      }
     },
     "localname": "OperatingLeaseLiabilitiesPaymentsDueAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingLeaseLiability": {
     "auth_ref": [
      "r324"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      },
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease.",
        "label": "Operating Lease, Liability",
        "totalLabel": "Present value of lease liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilityCurrent": {
     "auth_ref": [
      "r324"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingLeaseLiability",
       "weight": 1.0
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.",
        "label": "Operating Lease, Liability, Current",
        "negatedLabel": "Less current obligations",
        "verboseLabel": "Current portion of operating lease liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilityNoncurrent": {
     "auth_ref": [
      "r324"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetailsCalc3": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingLeaseLiability",
       "weight": 1.0
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.",
        "label": "Operating Lease, Liability, Noncurrent",
        "terseLabel": "Long-term lease obligations",
        "verboseLabel": "Operating lease liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiabilityNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesMaturitiesOfLeaseLiabilitiesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasePayments": {
     "auth_ref": [
      "r327",
      "r333"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.",
        "label": "Operating Lease, Payments",
        "terseLabel": "Cash paid for operating lease liabilities"
       }
      }
     },
     "localname": "OperatingLeasePayments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseRightOfUseAsset": {
     "auth_ref": [
      "r323"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of lessee's right to use underlying asset under operating lease.",
        "label": "Operating Lease, Right-of-Use Asset",
        "verboseLabel": "Operating lease right-of-use assets"
       }
      }
     },
     "localname": "OperatingLeaseRightOfUseAsset",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent": {
     "auth_ref": [
      "r335",
      "r338"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average discount rate for operating lease calculated at point in time.",
        "label": "Operating Lease, Weighted Average Discount Rate, Percent",
        "terseLabel": "Weighted average discount rate - Operating leases"
       }
      }
     },
     "localname": "OperatingLeaseWeightedAverageDiscountRatePercent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1": {
     "auth_ref": [
      "r334",
      "r338"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Operating Lease, Weighted Average Remaining Lease Term",
        "terseLabel": "Weighted average remaining lease term -Operating leases (years)"
       }
      }
     },
     "localname": "OperatingLeaseWeightedAverageRemainingLeaseTerm1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_OperatingLossCarryforwards": {
     "auth_ref": [
      "r273"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
        "label": "Operating Loss Carryforwards"
       }
      }
     },
     "localname": "OperatingLossCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLossCarryforwardsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Operating Loss Carryforwards [Line Items]"
       }
      }
     },
     "localname": "OperatingLossCarryforwardsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingLossCarryforwardsTable": {
     "auth_ref": [
      "r274"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule reflecting pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.",
        "label": "Operating Loss Carryforwards [Table]"
       }
      }
     },
     "localname": "OperatingLossCarryforwardsTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Nature of Operations and Summary of Significant Accounting Policies",
        "terseLabel": "Basis of Presentation"
       }
      }
     },
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock": {
     "auth_ref": [
      "r1",
      "r97",
      "r124",
      "r299"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows.  Describes procedure if disclosures are provided in more than one note to the financial statements.",
        "label": "Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]",
        "terseLabel": "Nature of Operations and Summary of Significant Accounting Policies"
       }
      }
     },
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_OtherAccruedLiabilitiesCurrent": {
     "auth_ref": [
      "r9",
      "r10",
      "r11",
      "r40"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails": {
       "order": 10.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.",
        "label": "Other Accrued Liabilities, Current",
        "verboseLabel": "Other"
       }
      }
     },
     "localname": "OtherAccruedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherAssetsCurrent": {
     "auth_ref": [
      "r50"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of current assets classified as other.",
        "label": "Other Assets, Current",
        "terseLabel": "Other current assets"
       }
      }
     },
     "localname": "OtherAssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherAssetsNoncurrent": {
     "auth_ref": [
      "r34"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 9.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of noncurrent assets classified as other.",
        "label": "Other Assets, Noncurrent",
        "terseLabel": "Other assets"
       }
      }
     },
     "localname": "OtherAssetsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherLiabilitiesMember": {
     "auth_ref": [
      "r300",
      "r302"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Primary financial statement caption encompassing other liabilities.",
        "label": "Other Liabilities [Member]",
        "terseLabel": "Several"
       }
      }
     },
     "localname": "OtherLiabilitiesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherLiabilitiesNoncurrent": {
     "auth_ref": [
      "r44"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.",
        "label": "Other Liabilities, Noncurrent",
        "terseLabel": "Other long-term liabilities"
       }
      }
     },
     "localname": "OtherLiabilitiesNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherNoncashExpense": {
     "auth_ref": [
      "r77"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 18.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of expense or loss included in net income that result in no cash flow, classified as other.",
        "label": "Other Noncash Expense",
        "terseLabel": "Other non-cash losses, net"
       }
      }
     },
     "localname": "OtherNoncashExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OverAllotmentOptionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Right given to the underwriter to sell additional shares over the initial allotment.",
        "label": "Over Allotment Option [Member]",
        "terseLabel": "Over-allotment"
       }
      }
     },
     "localname": "OverAllotmentOptionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PaymentsOfDebtIssuanceCosts": {
     "auth_ref": [
      "r69"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.",
        "label": "Payments of Debt Issuance Costs",
        "negatedLabel": "Payment of debt issuance costs"
       }
      }
     },
     "localname": "PaymentsOfDebtIssuanceCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": {
     "auth_ref": [
      "r65"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.",
        "label": "Payments to Acquire Property, Plant, and Equipment",
        "negatedLabel": "Purchase of property and equipment"
       }
      }
     },
     "localname": "PaymentsToAcquirePropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PerformanceSharesMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Share-based payment arrangement awarded for meeting performance target.",
        "label": "Performance Shares [Member]",
        "terseLabel": "PSU"
       }
      }
     },
     "localname": "PerformanceSharesMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PlanNameAxis": {
     "auth_ref": [
      "r209",
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by plan name for share-based payment arrangement.",
        "label": "Plan Name [Axis]"
       }
      }
     },
     "localname": "PlanNameAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PlanNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Plan name for share-based payment arrangement.",
        "label": "Plan Name [Domain]",
        "terseLabel": "Plan Name [Domain]"
       }
      }
     },
     "localname": "PlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PreOpeningCosts": {
     "auth_ref": [
      "r62"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expenditures associated with opening new locations which are noncapital in nature and expensed as incurred.",
        "label": "Pre-Opening Costs",
        "terseLabel": "Store pre-operating cost"
       }
      }
     },
     "localname": "PreOpeningCosts",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PreferredStockParOrStatedValuePerShare": {
     "auth_ref": [
      "r22"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.",
        "label": "Preferred Stock, Par or Stated Value Per Share",
        "terseLabel": "Preferred stock, par value"
       }
      }
     },
     "localname": "PreferredStockParOrStatedValuePerShare",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_PreferredStockSharesAuthorized": {
     "auth_ref": [
      "r22"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.",
        "label": "Preferred Stock, Shares Authorized",
        "terseLabel": "Preferred stock, authorized"
       }
      }
     },
     "localname": "PreferredStockSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PreferredStockSharesIssued": {
     "auth_ref": [
      "r22"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.",
        "label": "Preferred Stock, Shares Issued",
        "verboseLabel": "Preferred stock, issued"
       }
      }
     },
     "localname": "PreferredStockSharesIssued",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PreferredStockSharesOutstanding": {
     "auth_ref": [
      "r22"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.",
        "label": "Preferred Stock, Shares Outstanding",
        "verboseLabel": "Preferred stock, outstanding"
       }
      }
     },
     "localname": "PreferredStockSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStockDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PrepaidExpenseCurrent": {
     "auth_ref": [
      "r4",
      "r6",
      "r148"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.",
        "label": "Prepaid Expense, Current",
        "terseLabel": "Prepaid expenses"
       }
      }
     },
     "localname": "PrepaidExpenseCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PresentValueOfFutureMinimumLeasePaymentsSaleLeasebackTransactions": {
     "auth_ref": [
      "r314"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Present value of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing.",
        "label": "Present Value of Future Minimum Lease Payments, Sale Leaseback Transactions",
        "verboseLabel": "Financing obligations"
       }
      }
     },
     "localname": "PresentValueOfFutureMinimumLeasePaymentsSaleLeasebackTransactions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PrimeRateMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest rate charged by financial institutions to their most creditworthy borrowers.",
        "label": "Prime Rate [Member]",
        "terseLabel": "Bank's Prime rate"
       }
      }
     },
     "localname": "PrimeRateMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PriorPeriodReclassificationAdjustmentDescription": {
     "auth_ref": [
      "r0"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements.",
        "label": "Reclassification, Policy [Policy Text Block]",
        "verboseLabel": "Reclassification"
       }
      }
     },
     "localname": "PriorPeriodReclassificationAdjustmentDescription",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ProceedsFromIssuanceOfLongTermDebt": {
     "auth_ref": [
      "r67"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.",
        "label": "Proceeds from Issuance of Long-term Debt",
        "terseLabel": "Proceeds from issuance of long-term debt"
       }
      }
     },
     "localname": "ProceedsFromIssuanceOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromLinesOfCredit": {
     "auth_ref": [
      "r67",
      "r91"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Proceeds from Lines of Credit",
        "terseLabel": "Proceeds from lines of credit"
       }
      }
     },
     "localname": "ProceedsFromLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment": {
     "auth_ref": [
      "r64"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.",
        "label": "Proceeds from Sale of Property, Plant, and Equipment",
        "terseLabel": "Net proceeds from sale of property and equipment"
       }
      }
     },
     "localname": "ProceedsFromSaleOfPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromStockOptionsExercised": {
     "auth_ref": [
      "r66",
      "r239"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow from exercise of option under share-based payment arrangement.",
        "label": "Proceeds from Stock Options Exercised",
        "terseLabel": "Proceeds from exercise of stock options"
       }
      }
     },
     "localname": "ProceedsFromStockOptionsExercised",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProductAndServiceOtherMember": {
     "auth_ref": [
      "r194"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Article or substance produced by nature, labor or machinery and act of providing assistance, classified as other.",
        "label": "Product And Service Other [Member]",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "ProductAndServiceOtherMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionDisaggregationOfRevenueDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ProfitLoss": {
     "auth_ref": [
      "r52",
      "r53",
      "r71",
      "r129",
      "r130",
      "r289",
      "r291",
      "r292",
      "r293",
      "r294"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 16.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.",
        "label": "Net Income (Loss), Including Portion Attributable to Noncontrolling Interest",
        "verboseLabel": "Net (loss) income"
       }
      }
     },
     "localname": "ProfitLoss",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Property and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentByTypeAxis": {
     "auth_ref": [
      "r33",
      "r169"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of long-lived, physical assets used to produce goods and services and not intended for resale.",
        "label": "Property, Plant and Equipment, Type [Axis]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentByTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": {
     "auth_ref": [
      "r172"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.",
        "label": "Property, Plant and Equipment Disclosure [Text Block]",
        "terseLabel": "Property and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipment"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentGross": {
     "auth_ref": [
      "r32",
      "r167"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_PropertyPlantAndEquipmentNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Gross",
        "terseLabel": "Property and equipment, gross"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Property, Plant and Equipment [Line Items]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property Plant And Equipment [Member]",
        "terseLabel": "Property and equipment, net"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentNet": {
     "auth_ref": [
      "r14",
      "r15",
      "r169",
      "r389"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Net",
        "terseLabel": "Property and equipment, net",
        "totalLabel": "Property and equipment, net"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock": {
     "auth_ref": [
      "r31",
      "r83",
      "r169"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments.",
        "label": "Property, Plant and Equipment, Policy [Policy Text Block]",
        "terseLabel": "Property and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentTextBlock": {
     "auth_ref": [
      "r14",
      "r169"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Property, Plant and Equipment [Table Text Block]",
        "terseLabel": "Schedule of property and equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentTypeDomain": {
     "auth_ref": [
      "r14",
      "r167"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Listing of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.",
        "label": "Property Plant And Equipment Type [Domain]",
        "terseLabel": "Property, Plant and Equipment, Type [Domain]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentUsefulLife": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.",
        "label": "Property, Plant and Equipment, Useful Life",
        "terseLabel": "Estimated useful life"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_QuarterlyFinancialInformationDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Quarterly Results of Operations (Unaudited)"
       }
      }
     },
     "localname": "QuarterlyFinancialInformationDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_QuarterlyFinancialInformationTextBlock": {
     "auth_ref": [
      "r116"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.",
        "label": "Quarterly Financial Information [Text Block]",
        "verboseLabel": "Quarterly Results of Operations (Unaudited)"
       }
      }
     },
     "localname": "QuarterlyFinancialInformationTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnaudited"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]",
        "terseLabel": "Reconciliation unrecognized tax benefits:"
       }
      }
     },
     "localname": "ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyDomain": {
     "auth_ref": [
      "r350"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party [Domain]",
        "terseLabel": "Related Party [Domain]"
       }
      }
     },
     "localname": "RelatedPartyDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RelatedPartyTransactionAmountsOfTransaction": {
     "auth_ref": [
      "r342",
      "r346",
      "r347"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of transactions with related party during the financial reporting period.",
        "label": "Related Party Transaction, Amounts of Transaction",
        "verboseLabel": "Payments to related party"
       }
      }
     },
     "localname": "RelatedPartyTransactionAmountsOfTransaction",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Related Party Transaction [Line Items]",
        "terseLabel": "Related Party Transactions"
       }
      }
     },
     "localname": "RelatedPartyTransactionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Related Party Transactions"
       }
      }
     },
     "localname": "RelatedPartyTransactionsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": {
     "auth_ref": [
      "r202",
      "r344",
      "r346",
      "r359",
      "r360",
      "r361",
      "r362",
      "r363",
      "r364",
      "r365",
      "r366",
      "r367",
      "r368",
      "r369",
      "r370"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party [Axis]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsByRelatedPartyAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": {
     "auth_ref": [
      "r350"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Related Party Transactions Disclosure [Text Block]",
        "verboseLabel": "Related Party Transactions"
       }
      }
     },
     "localname": "RelatedPartyTransactionsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRelatedPartyTransactions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RepaymentsOfLinesOfCredit": {
     "auth_ref": [
      "r68",
      "r91"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Repayments of Lines of Credit",
        "negatedLabel": "Payments under lines of credit"
       }
      }
     },
     "localname": "RepaymentsOfLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfLongTermDebt": {
     "auth_ref": [
      "r68"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.",
        "label": "Repayments of Long-term Debt",
        "negatedLabel": "Payments on long-term debt"
       }
      }
     },
     "localname": "RepaymentsOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfSecuredDebt": {
     "auth_ref": [
      "r68"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.",
        "label": "Repayments of Secured Debt",
        "terseLabel": "Repayment of borrowings"
       }
      }
     },
     "localname": "RepaymentsOfSecuredDebt",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RestrictedCashAndCashEquivalentsNoncurrent": {
     "auth_ref": [
      "r8",
      "r16",
      "r78",
      "r81",
      "r396"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesReconciliationOfCashCashEquivalentsAndRestrictedCashDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
       "weight": 1.0
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 7.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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": "Restricted Cash and Cash Equivalents, Noncurrent",
        "terseLabel": "Restricted cash"
       }
      }
     },
     "localname": "RestrictedCashAndCashEquivalentsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesReconciliationOfCashCashEquivalentsAndRestrictedCashDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RestrictedStockUnitsRSUMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.",
        "label": "Restricted Stock Units R S U [Member]",
        "terseLabel": "RSUs"
       }
      }
     },
     "localname": "RestrictedStockUnitsRSUMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RetainedEarningsAccumulatedDeficit": {
     "auth_ref": [
      "r25",
      "r186",
      "r387"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
        "label": "Retained Earnings (Accumulated Deficit).",
        "terseLabel": "Retained earnings",
        "verboseLabel": "(Accumulated deficit) retained earnings"
       }
      }
     },
     "localname": "RetainedEarningsAccumulatedDeficit",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RetainedEarningsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
        "label": "Retained Earnings [Member]",
        "terseLabel": "Retained earnings"
       }
      }
     },
     "localname": "RetainedEarningsMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Revenue Recognition"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax": {
     "auth_ref": [
      "r190",
      "r191"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 2.0,
       "parentTag": "us-gaap_GrossProfit",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.",
        "label": "Revenue from Contract with Customer, Excluding Assessed Tax",
        "terseLabel": "Revenue",
        "verboseLabel": "Net sales"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerExcludingAssessedTax",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerTextBlock": {
     "auth_ref": [
      "r195"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.",
        "label": "Revenue from Contract with Customer [Text Block]",
        "terseLabel": "Revenue Recognition"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognition"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Revenue, Initial Application Period Cumulative Effect Transition [Line Items]",
        "terseLabel": "Revenue Recognition"
       }
      }
     },
     "localname": "RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information when using transition method for cumulative effect in initial period of application for revenue from contract with customer.",
        "label": "Revenue, Initial Application Period Cumulative Effect Transition [Table]"
       }
      }
     },
     "localname": "RevenueInitialApplicationPeriodCumulativeEffectTransitionTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevenueRecognitionNarrativesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevenueRecognitionPolicyTextBlock": {
     "auth_ref": [
      "r84",
      "r85"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources.",
        "label": "Revenue Recognition, Policy [Policy Text Block]",
        "terseLabel": "Revenue Recognition"
       }
      }
     },
     "localname": "RevenueRecognitionPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RevolvingCreditFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.",
        "label": "Revolving Credit Facility [Member]",
        "terseLabel": "ABL Credit Facility"
       }
      }
     },
     "localname": "RevolvingCreditFacilityMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails",
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SaleAndLeasebackTransactionGainLossNet": {
     "auth_ref": [
      "r332",
      "r338",
      "r339"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 3.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.",
        "label": "Sale and Leaseback Transaction, Gain (Loss), Net",
        "negatedLabel": "Gain on sale-leaseback",
        "verboseLabel": "Gain on sale-leaseback"
       }
      }
     },
     "localname": "SaleAndLeasebackTransactionGainLossNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleLeasebackTransactionAmountDueUnderFinancingArrangement": {
     "auth_ref": [
      "r312",
      "r316"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The liability due as of the balance sheet date for leasebacks accounted for using the deposit method.",
        "label": "Sale Leaseback Transaction, Amount Due under Financing Arrangement",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "SaleLeasebackTransactionAmountDueUnderFinancingArrangement",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleLeasebackTransactionAnnualRentalPayments": {
     "auth_ref": [
      "r312",
      "r316"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The yearly payments due under the lease entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.",
        "label": "Sale Leaseback Transaction, Annual Rental Payments",
        "verboseLabel": "Cumulative initial annual rent"
       }
      }
     },
     "localname": "SaleLeasebackTransactionAnnualRentalPayments",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized": {
     "auth_ref": [
      "r315"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The portion of the deferred gain that was recognized in the current period.",
        "label": "Amortization of Deferred Gain on Sale Leaseback",
        "negatedLabel": "Amortization of deferred gain on sale-leaseback"
       }
      }
     },
     "localname": "SaleLeasebackTransactionCurrentPeriodGainRecognized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleLeasebackTransactionDeferredGainNet": {
     "auth_ref": [
      "r315"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The portion of the gain that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period.",
        "label": "Sale Leaseback Transaction, Deferred Gain, Net",
        "terseLabel": "Net gain",
        "verboseLabel": "Deferred gains on sale-leasebacks"
       }
      }
     },
     "localname": "SaleLeasebackTransactionDeferredGainNet",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleLeasebackTransactionDisclosureTextBlock": {
     "auth_ref": [
      "r321",
      "r341"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for sale leaseback transaction. Includes, but is not limited to, terms and conditions of transaction and gain (loss) from transaction.",
        "label": "Sale Leaseback Transaction Disclosure [Text Block]",
        "terseLabel": "Sale-Leaseback Transactions"
       }
      }
     },
     "localname": "SaleLeasebackTransactionDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities": {
     "auth_ref": [
      "r318",
      "r319",
      "r320"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of cash inflow before closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in investing activities.",
        "label": "Proceeds from Sale of Property Held-for-sale",
        "verboseLabel": "Proceeds from sale of properties"
       }
      }
     },
     "localname": "SaleLeasebackTransactionGrossProceedsInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSaleLeasebackTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleLeasebackTransactionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Sale Leaseback Transaction [Line Items]"
       }
      }
     },
     "localname": "SaleLeasebackTransactionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SaleLeasebackTransactionNetBookValue": {
     "auth_ref": [
      "r318",
      "r319",
      "r320",
      "r340"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The net book value of the asset(s) sold in connection with the sale of the property to another party and lease back to the seller.",
        "label": "Sale Leaseback Transaction, Net Book Value",
        "verboseLabel": "Build-to-suit assets"
       }
      }
     },
     "localname": "SaleLeasebackTransactionNetBookValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleLeasebackTransactionTable": {
     "auth_ref": [
      "r312",
      "r316",
      "r340"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A summary of the elements of a transaction involving the entity's sale of property to another party and the lease of the property back to the entity.",
        "label": "Sale Leaseback Transaction [Table]"
       }
      }
     },
     "localname": "SaleLeasebackTransactionTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SaleOfStockNameOfTransactionDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement.",
        "label": "Sale Of Stock Name Of Transaction [Domain]",
        "terseLabel": "Sale of Stock [Domain]"
       }
      }
     },
     "localname": "SaleOfStockNameOfTransactionDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the components of accrued liabilities.",
        "label": "Schedule of Accrued Liabilities [Table Text Block]",
        "verboseLabel": "Schedule of accrued and other current liabilities"
       }
      }
     },
     "localname": "ScheduleOfAccruedLiabilitiesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureAccruedLiabilitiesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable": {
     "auth_ref": [
      "r110"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule for securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by Antidilutive Securities.",
        "label": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]"
       }
      }
     },
     "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the components of cash, cash equivalents, and investments.",
        "label": "Cash, Cash Equivalents and Investments [Table Text Block]",
        "verboseLabel": "Schedule of cash, cash equivalents and restricted cash"
       }
      }
     },
     "localname": "ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": {
     "auth_ref": [
      "r279"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.",
        "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]",
        "terseLabel": "Schedule of income tax provision"
       }
      }
     },
     "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDebtInstrumentsTextBlock": {
     "auth_ref": [
      "r43",
      "r90",
      "r182",
      "r183",
      "r184",
      "r185",
      "r308",
      "r309",
      "r311",
      "r382"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.",
        "label": "Schedule of Long-term Debt Instruments [Table Text Block]",
        "verboseLabel": "Schedule of long-term debt"
       }
      }
     },
     "localname": "ScheduleOfDebtInstrumentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": {
     "auth_ref": [
      "r271"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.",
        "label": "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]",
        "terseLabel": "Schedule of tax effects of temporary differences give rise to significant components of deferred tax assets and liabilities"
       }
      }
     },
     "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": {
     "auth_ref": [
      "r111"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.",
        "label": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]",
        "verboseLabel": "Schedule of calculation of basic and diluted earnings per share"
       }
      }
     },
     "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": {
     "auth_ref": [
      "r255"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]",
        "terseLabel": "Schedule of reconciliation between the actual income tax provision and the income tax provision calculated at the federal statutory tax rate"
       }
      }
     },
     "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock": {
     "auth_ref": [
      "r176"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.",
        "label": "Schedule of Maturities of Long-term Debt [Table Text Block]",
        "terseLabel": "Schedule of aggregate annual maturities of long-term debt, excluding finance lease obligations"
       }
      }
     },
     "localname": "ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable": {
     "auth_ref": [
      "r33",
      "r169"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Property, Plant and Equipment [Table]"
       }
      }
     },
     "localname": "ScheduleOfPropertyPlantAndEquipmentTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosurePropertyAndEquipmentDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock": {
     "auth_ref": [
      "r115"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.",
        "label": "Schedule of quarterly financial information"
       }
      }
     },
     "localname": "ScheduleOfQuarterlyFinancialInformationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": {
     "auth_ref": [
      "r88",
      "r344",
      "r346",
      "r347",
      "r348",
      "r349"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Schedule of Related Party Transactions, by Related Party [Table]"
       }
      }
     },
     "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureRelatedPartyTransactionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfSaleLeasebackTransactionsTextBlock": {
     "auth_ref": [
      "r312",
      "r316",
      "r317",
      "r340"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of sale leaseback transactions.",
        "label": "Sale Leaseback Transactions [Table Text Block]",
        "terseLabel": "Schedule of derecognition of sale-leaseback and build-to-suit lease accounting guidance 842"
       }
      }
     },
     "localname": "ScheduleOfSaleLeasebackTransactionsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": {
     "auth_ref": [
      "r209",
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of information about share-based payment arrangement.",
        "label": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock": {
     "auth_ref": [
      "r214"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.",
        "label": "Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]",
        "terseLabel": "Schedule of RSU activity and related information"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock": {
     "auth_ref": [
      "r214",
      "r225",
      "r228"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.",
        "label": "Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]",
        "terseLabel": "Schedule of option activity under Equity Plans"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock": {
     "auth_ref": [
      "r231"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.",
        "label": "Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]",
        "terseLabel": "Schedule of assumptions in estimating the fair value of option grants"
       }
      }
     },
     "localname": "ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock": {
     "auth_ref": [
      "r265",
      "r280"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Tabular disclosure of the change in unrecognized tax benefits.",
        "label": "Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]",
        "terseLabel": "Schedule of reconciliation of unrecognized tax benefits"
       }
      }
     },
     "localname": "ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SegmentReportingPolicyPolicyTextBlock": {
     "auth_ref": [
      "r83"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for segment reporting.",
        "label": "Segment Reporting, Policy [Policy Text Block]",
        "terseLabel": "Segment Information"
       }
      }
     },
     "localname": "SegmentReportingPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SelfInsuranceReservePolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for self-insurance reserves, including, but not limited to incurred but not reported reserves (IBNR).",
        "label": "Self Insurance Reserve [Policy Text Block]",
        "terseLabel": "Insurance Liabilities"
       }
      }
     },
     "localname": "SelfInsuranceReservePolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SellingGeneralAndAdministrativeExpense": {
     "auth_ref": [
      "r63",
      "r144"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations": {
       "order": 3.0,
       "parentTag": "us-gaap_OperatingExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.",
        "label": "Selling, General and Administrative Expense",
        "terseLabel": "Selling, general and administrative expenses"
       }
      }
     },
     "localname": "SellingGeneralAndAdministrativeExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock": {
     "auth_ref": [
      "r83",
      "r246"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for inclusion of significant items in the selling, general and administrative (or similar) expense report caption.",
        "label": "Selling, General and Administrative Expenses, Policy [Policy Text Block]",
        "terseLabel": "Selling, General and Administrative Expenses"
       }
      }
     },
     "localname": "SellingGeneralAndAdministrativeExpensesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SeniorLienMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Legal right, before the claims of other creditors, of a creditor to possess property or other collateral in satisfaction of an outstanding debt in the event of borrower default or bankruptcy. Excludes first mortgage loans.",
        "label": "Senior Lien [Member]",
        "terseLabel": "First Lien Agreement"
       }
      }
     },
     "localname": "SeniorLienMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureLongTermDebtSeniorNotesDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ShareBasedCompensation": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows": {
       "order": 17.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of noncash expense for share-based payment arrangement.",
        "label": "Share-based Compensation",
        "terseLabel": "Stock-based compensation"
       }
      }
     },
     "localname": "ShareBasedCompensation",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1": {
     "auth_ref": [
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period",
        "terseLabel": "Contractual terms"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1": {
     "auth_ref": [
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period",
        "verboseLabel": "Vesting period (in years)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod": {
     "auth_ref": [
      "r219"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period",
        "negatedLabel": "Forfeited (in shares)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r224"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value",
        "terseLabel": "Forfeited (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": {
     "auth_ref": [
      "r222"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period",
        "terseLabel": "Granted (in shares)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r222"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value",
        "terseLabel": "Granted (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": {
     "auth_ref": [
      "r221"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number",
        "periodEndLabel": "Nonvested, end of year (in shares)",
        "periodStartLabel": "Nonvested, beginning of year (in shares)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]",
        "terseLabel": "Number of Shares"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r221"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value",
        "periodEndLabel": "Nonvested, end of year (in dollars per share)",
        "periodStartLabel": "Nonvested, beginning of year (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]",
        "terseLabel": "Weighted Average Grant Date Fair Value"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": {
     "auth_ref": [
      "r223"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period",
        "negatedLabel": "Vested (in shares)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r223"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value",
        "terseLabel": "Vested (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]",
        "terseLabel": "Assumptions:"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate": {
     "auth_ref": [
      "r234"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The risk-free interest rate assumption that is used in valuing an option on its own shares.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate",
        "verboseLabel": "Weighted-average risk-free interest rate (as a percent)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate": {
     "auth_ref": [
      "r233"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Rate of weighted-average expected volatility for award under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate",
        "verboseLabel": "Weighted-average expected volatility (as a percent)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]",
        "terseLabel": "Stock-Based Compensation"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of additional shares authorized for issuance under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized",
        "terseLabel": "Additional number of shares authorized to be granted"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant": {
     "auth_ref": [
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant",
        "verboseLabel": "Share available for future grant"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]",
        "terseLabel": "Weighted Average Remaining Contractual Term"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber": {
     "auth_ref": [
      "r217"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number",
        "periodEndLabel": "Exercisable, end of year (in shares)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice": {
     "auth_ref": [
      "r217"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price",
        "periodEndLabel": "Exercisable, end of year (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue": {
     "auth_ref": [
      "r227"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value",
        "terseLabel": "Intrinsic fair value of options exercised"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod": {
     "auth_ref": [
      "r220"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period",
        "negatedLabel": "Forfeited or expired (in shares)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice": {
     "auth_ref": [
      "r220"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average price of options that were either forfeited or expired.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price",
        "terseLabel": "Forfeited or expired (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Gross number of share options (or share units) granted during the period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross",
        "terseLabel": "Granted (in shares)",
        "verboseLabel": "Number of units granted"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": {
     "auth_ref": [
      "r226"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value",
        "terseLabel": "Weighted-average fair value of options granted (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber": {
     "auth_ref": [
      "r216",
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of options outstanding, including both vested and non-vested options.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number",
        "periodEndLabel": "Outstanding, end of year (in shares)",
        "periodStartLabel": "Outstanding, beginning of year (in shares)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]",
        "terseLabel": "Options"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice": {
     "auth_ref": [
      "r215"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price",
        "periodEndLabel": "Outstanding, end of year (in dollars per share)",
        "periodStartLabel": "Outstanding, beginning of year (in dollars per share)",
        "terseLabel": "Exercise price"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]",
        "terseLabel": "Weighted Average Exercise Price"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]",
        "terseLabel": "Aggregate Intrinsic Value"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue": {
     "auth_ref": [
      "r230"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value",
        "terseLabel": "Exercisable, end of year, aggregate intrinsic value"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue": {
     "auth_ref": [
      "r228"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value",
        "terseLabel": "Outstanding, end of year, aggregate intrinsic value"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": {
     "auth_ref": [
      "r207",
      "r211"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Award under share-based payment arrangement.",
        "label": "Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]",
        "terseLabel": "Award Type [Domain]"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average price at which option holders acquired shares when converting their stock options into shares.",
        "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price",
        "verboseLabel": "Exercised (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.",
        "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price",
        "verboseLabel": "Granted (in dollars per share)"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage": {
     "auth_ref": [
      "r210"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Percentage of vesting of award under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage",
        "terseLabel": "Cliff vesting percentage"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1": {
     "auth_ref": [
      "r232",
      "r240"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term",
        "terseLabel": "Weighted-average expected term (in years)"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationAssumptionsDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1": {
     "auth_ref": [
      "r238"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term",
        "terseLabel": "Exercisable, end of year (in years)"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2": {
     "auth_ref": [
      "r229"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term",
        "terseLabel": "Outstanding, end of year (in years)"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1": {
     "auth_ref": [
      "r213"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value",
        "terseLabel": "Grant date fair value of options"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationFairValueOptionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SharesOutstanding": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of shares issued which are neither cancelled nor held in the treasury.",
        "label": "Shares, Outstanding",
        "periodEndLabel": "Balance - Stockholder's Equity (in shares)",
        "periodStartLabel": "Balance - Stockholder's Equity (in shares)"
       }
      }
     },
     "localname": "SharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_SoftwareDevelopmentMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Internally developed software for sale, licensing or long-term internal use.",
        "label": "Software Development [Member]",
        "terseLabel": "Internal use software"
       }
      }
     },
     "localname": "SoftwareDevelopmentMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_StateAndLocalJurisdictionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Designated tax department of a state or local government entitled to levy and collect income taxes from the entity.",
        "label": "State And Local Jurisdiction [Member]",
        "terseLabel": "State"
       }
      }
     },
     "localname": "StateAndLocalJurisdictionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_StatementEquityComponentsAxis": {
     "auth_ref": [
      "r47",
      "r181"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by component of equity.",
        "label": "Equity Components [Axis]"
       }
      }
     },
     "localname": "StatementEquityComponentsAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "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.",
        "label": "Statement [Line Items]"
       }
      }
     },
     "localname": "StatementLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedStatementsOfOperationsDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquityParenthetical"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfCashFlowsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Consolidated Statements of Cash Flows"
       }
      }
     },
     "localname": "StatementOfCashFlowsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfFinancialPositionAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Consolidated Balance Sheets"
       }
      }
     },
     "localname": "StatementOfFinancialPositionAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Condensed Consolidated Statements of Shareholders' Equity"
       }
      }
     },
     "localname": "StatementOfStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.",
        "label": "Statement [Table]"
       }
      }
     },
     "localname": "StatementTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/DisclosureIncomeTaxesTaxCutsAndJobsActBenefitDetails",
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureQuarterlyResultsOfOperationsUnauditedDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantParentheticalDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationRestrictedStockDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquityParenthetical"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised": {
     "auth_ref": [
      "r22",
      "r23",
      "r181",
      "r186",
      "r218"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of share options (or share units) exercised during the current period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period",
        "negatedLabel": "Exercised (in shares)",
        "verboseLabel": "Exercise of stock options and other awards (in shares)"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodSharesStockOptionsExercised",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationActivityDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised": {
     "auth_ref": [
      "r47",
      "r181",
      "r186"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Value of stock issued as a result of the exercise of stock options.",
        "label": "Stock Issued During Period, Value, Stock Options Exercised",
        "terseLabel": "Exercise of stock options and other awards"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodValueStockOptionsExercised",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockholdersEquity": {
     "auth_ref": [
      "r23",
      "r26",
      "r27",
      "r133"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.",
        "label": "Stockholders' Equity Attributable to Parent",
        "periodEndLabel": "Balance - Stockholder's Equity",
        "periodStartLabel": "Balance - Stockholder's Equity",
        "totalLabel": "Total shareholders' equity"
       }
      }
     },
     "localname": "StockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Stockholders' Equity Attributable to Parent [Abstract]",
        "terseLabel": "Shareholders' Equity"
       }
      }
     },
     "localname": "StockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockholdersEquityNoteAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Capital Stock"
       }
      }
     },
     "localname": "StockholdersEquityNoteAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockholdersEquityNoteDisclosureTextBlock": {
     "auth_ref": [
      "r187"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.",
        "label": "Stockholders' Equity Note Disclosure [Text Block]",
        "terseLabel": "Capital Stock"
       }
      }
     },
     "localname": "StockholdersEquityNoteDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCapitalStock"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SubsequentEventLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.",
        "label": "Subsequent Event [Line Items]"
       }
      }
     },
     "localname": "SubsequentEventLineItems",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event [Member]",
        "terseLabel": "Subsequent event"
       }
      }
     },
     "localname": "SubsequentEventMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SubsequentEventTable": {
     "auth_ref": [
      "r353"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Discloses pertinent information about one or more significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued.",
        "label": "Subsequent Event [Table]"
       }
      }
     },
     "localname": "SubsequentEventTable",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventTypeAxis": {
     "auth_ref": [
      "r353"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event Type [Axis]"
       }
      }
     },
     "localname": "SubsequentEventTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventTypeDomain": {
     "auth_ref": [
      "r353"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event Type [Domain]",
        "terseLabel": "Subsequent Event Type [Domain]"
       }
      }
     },
     "localname": "SubsequentEventTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEventsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SubsequentEventsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Subsequent Events"
       }
      }
     },
     "localname": "SubsequentEventsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventsTextBlock": {
     "auth_ref": [
      "r355"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.",
        "label": "Subsequent Events [Text Block]",
        "verboseLabel": "Subsequent Events"
       }
      }
     },
     "localname": "SubsequentEventsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSubsequentEvents"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SubsidiarySaleOfStockAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of sale of the entity's stock.",
        "label": "Sale of Stock [Axis]"
       }
      }
     },
     "localname": "SubsidiarySaleOfStockAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails",
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SupplementalCashFlowInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Supplemental Cash Flow Information [Abstract]",
        "terseLabel": "Supplemental Cash Flow Information"
       }
      }
     },
     "localname": "SupplementalCashFlowInformationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TaxesPayableCurrent": {
     "auth_ref": [
      "r38"
     ],
     "calculation": {
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets": {
       "order": 7.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Taxes Payable, Current",
        "terseLabel": "Income taxes payable"
       }
      }
     },
     "localname": "TaxesPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantCondensedBalanceSheetsDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": {
     "auth_ref": [
      "r358"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.",
        "label": "Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain]",
        "terseLabel": "Financial Instruments [Domain]"
       }
      }
     },
     "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureNatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TypeOfAdoptionMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Adoption and early adoption of sources of change to generally accepted accounting principles (GAAP) in the United States. The FASB released the FASB Accounting Standards Codification as the authoritative source of literature effective for interim and annual periods ending after September 15, 2009. As part of the Codification process, the FASB issues Accounting Standards Updates to amend the Codification but otherwise the Accounting Standards Updates are not authoritative in their own right. All previous accounting standards (such as FASB Statements of Financial Accounting Standards, FASB Interpretations, FASB Staff Positions, Emerging Issues Task Force Consensuses, other pronouncements of the FASB or other designated bodies, or other forms of GAAP are considered accounting pronouncements) were superseded upon the adoption of the Codification. For an interim period, references to the superseded standards are included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.",
        "label": "Type Of Adoption [Member]",
        "terseLabel": "Type of Adoption [Domain]"
       }
      }
     },
     "localname": "TypeOfAdoptionMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDerecognitionDetails",
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquityParenthetical"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TypeOfArrangementAxis": {
     "auth_ref": [
      "r286"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.",
        "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Axis]"
       }
      }
     },
     "localname": "TypeOfArrangementAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureStockBasedCompensationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_UnamortizedDebtIssuanceExpense": {
     "auth_ref": [
      "r34"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.",
        "label": "Unamortized Debt Issuance Expense",
        "terseLabel": "Less: unamortized deferred debt issuance costs"
       }
      }
     },
     "localname": "UnamortizedDebtIssuanceExpense",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtSummaryDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefits": {
     "auth_ref": [
      "r250",
      "r259"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of unrecognized tax benefits.",
        "label": "Unrecognized Tax Benefits",
        "periodEndLabel": "Balance, end of period",
        "periodStartLabel": "Balance, beginning of period"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefits",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions": {
     "auth_ref": [
      "r260"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
        "label": "Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions",
        "negatedLabel": "Subtractions based on tax positions related to the prior year"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities": {
     "auth_ref": [
      "r262"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.",
        "label": "Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities",
        "negatedLabel": "Settlements"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued": {
     "auth_ref": [
      "r257"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.",
        "label": "Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued",
        "terseLabel": "Interest expense and penalties"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]",
        "terseLabel": "Accrued penalties and interest"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions": {
     "auth_ref": [
      "r261"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.",
        "label": "Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions",
        "terseLabel": "Additions based on tax positions related to the current year"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions": {
     "auth_ref": [
      "r260"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
        "label": "Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions",
        "terseLabel": "Additions based on tax positions related to the prior year"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued": {
     "auth_ref": [
      "r257"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of interest expense accrued for an underpayment of income taxes.",
        "label": "Unrecognized Tax Benefits, Interest on Income Taxes Accrued",
        "terseLabel": "Accrued interest"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations": {
     "auth_ref": [
      "r263"
     ],
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.",
        "label": "Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations",
        "negatedLabel": "Expiration of statue of limitations"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate": {
     "auth_ref": [
      "r264"
     ],
     "crdr": "credit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.",
        "label": "Unrecognized Tax Benefits that Would Impact Effective Tax Rate",
        "terseLabel": "Unrecognized tax benefits, which would favorably impact the effective tax rate"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UseOfEstimates": {
     "auth_ref": [
      "r117",
      "r118",
      "r119",
      "r120",
      "r121",
      "r122",
      "r123"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.",
        "label": "Use of Estimates, Policy [Policy Text Block]",
        "verboseLabel": "Use of Estimates"
       }
      }
     },
     "localname": "UseOfEstimates",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_VariableLeaseCost": {
     "auth_ref": [
      "r331",
      "r338"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_LeaseCost",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.",
        "label": "Variable Lease, Cost",
        "terseLabel": "Variable lease cost"
       }
      }
     },
     "localname": "VariableLeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureCommitmentsAndContingenciesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_VariableRateAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Information by type of variable rate.",
        "label": "Variable Rate [Axis]"
       }
      }
     },
     "localname": "VariableRateAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_VariableRateDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.",
        "label": "Variable Rate [Domain]",
        "terseLabel": "Variable Rate [Domain]"
       }
      }
     },
     "localname": "VariableRateDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureLongTermDebtFirstLienAndSecondLienAgreementDetails",
      "http://www.athome.com/role/DisclosureRevolvingLineOfCreditDetails",
      "http://www.athome.com/role/DisclosureScheduleICondensedFinancialInformationOfRegistrantNotesToCondensedFinancialStatementsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment": {
     "auth_ref": [
      "r109"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.",
        "label": "Weighted Average Number Diluted Shares Outstanding Adjustment",
        "totalLabel": "Weighted average common shares outstanding-diluted"
       }
      }
     },
     "localname": "WeightedAverageNumberDilutedSharesOutstandingAdjustment",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]",
        "verboseLabel": "Effect of dilutive securities:"
       }
      }
     },
     "localname": "WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": {
     "auth_ref": [
      "r104",
      "r109"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.",
        "label": "Weighted Average Number of Shares Outstanding, Diluted",
        "terseLabel": "Diluted"
       }
      }
     },
     "localname": "WeightedAverageNumberOfDilutedSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Weighted Average Number of Shares Outstanding, Diluted [Abstract]",
        "terseLabel": "Weighted average shares outstanding:"
       }
      }
     },
     "localname": "WeightedAverageNumberOfSharesOutstandingAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": {
     "auth_ref": [
      "r103",
      "r109"
     ],
     "calculation": {
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment",
       "weight": 1.0
      }
     },
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.",
        "label": "Weighted Average Number of Shares Outstanding, Basic",
        "terseLabel": "Basic",
        "verboseLabel": "Weighted average common shares outstanding-basic"
       }
      }
     },
     "localname": "WeightedAverageNumberOfSharesOutstandingBasic",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails",
      "http://www.athome.com/role/StatementCondensedConsolidatedStatementsOfOperations"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Weighted Average Number of Shares Outstanding Reconciliation [Abstract]",
        "verboseLabel": "Denominator:"
       }
      }
     },
     "localname": "WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.athome.com/role/DisclosureEarningsPerShareDetails"
     ],
     "xbrltype": "stringItemType"
    }
   },
   "unitCount": 10
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=6359566&loc=d3e326-107755"
  },
  "r1": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "205",
   "URI": "http://asc.fasb.org/topic&trid=2122149"
  },
  "r10": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6935-107765"
  },
  "r100": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794"
  },
  "r101": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794"
  },
  "r102": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794"
  },
  "r103": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1448-109256"
  },
  "r104": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1505-109256"
  },
  "r105": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1252-109256"
  },
  "r106": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1500-109256"
  },
  "r107": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "60B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256"
  },
  "r108": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256"
  },
  "r109": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r11": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e7018-107765"
  },
  "r110": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r111": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r112": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "52",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=117327953&loc=d3e4984-109258"
  },
  "r113": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "260",
   "URI": "http://asc.fasb.org/topic&trid=2144383"
  },
  "r114": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "270",
   "URI": "http://asc.fasb.org/extlink&oid=116846552&loc=d3e543-108305"
  },
  "r115": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "270",
   "URI": "http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306"
  },
  "r116": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "270",
   "URI": "http://asc.fasb.org/topic&trid=2126967"
  },
  "r117": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r118": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r119": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592"
  },
  "r12": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766"
  },
  "r120": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592"
  },
  "r121": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592"
  },
  "r122": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592"
  },
  "r123": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592"
  },
  "r124": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "275",
   "URI": "http://asc.fasb.org/topic&trid=2134479"
  },
  "r125": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r126": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r127": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r128": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r129": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599"
  },
  "r13": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r130": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599"
  },
  "r131": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "40",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599"
  },
  "r132": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=118952595&loc=d3e4647-111522"
  },
  "r133": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 4.E)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707"
  },
  "r134": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570"
  },
  "r135": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919244-210447"
  },
  "r136": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447"
  },
  "r137": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447"
  },
  "r138": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447"
  },
  "r139": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447"
  },
  "r14": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(13))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r140": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922888-210455"
  },
  "r141": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922895-210455"
  },
  "r142": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118955579&loc=SL82922900-210455"
  },
  "r143": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=118942371&loc=SL82922954-210456"
  },
  "r144": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "10",
   "Topic": "330",
   "URI": "http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311"
  },
  "r145": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "10",
   "Topic": "330",
   "URI": "http://asc.fasb.org/extlink&oid=116846819&loc=d3e3927-108312"
  },
  "r146": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "330",
   "URI": "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4492-108314"
  },
  "r147": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "330",
   "URI": "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4556-108314"
  },
  "r148": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "10",
   "Topic": "340",
   "URI": "http://asc.fasb.org/extlink&oid=68074540&loc=d3e5879-108316"
  },
  "r149": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(b)",
   "Topic": "340",
   "URI": "http://asc.fasb.org/extlink&oid=68051541&loc=SL49131251-203054"
  },
  "r15": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(14))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r150": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266"
  },
  "r151": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266"
  },
  "r152": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975"
  },
  "r153": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
  },
  "r154": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267"
  },
  "r155": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267"
  },
  "r156": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274"
  },
  "r157": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274"
  },
  "r158": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
  },
  "r159": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "((a)(1),(b))",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r16": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(17))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r160": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(1)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r161": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(2)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r162": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275"
  },
  "r163": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=118198657&loc=SL118198666-228104"
  },
  "r164": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226348&loc=d3e2611-110228"
  },
  "r165": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228"
  },
  "r166": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r167": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r168": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r169": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r17": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(19)(a)(5))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r170": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230"
  },
  "r171": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230"
  },
  "r172": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "360",
   "URI": "http://asc.fasb.org/topic&trid=2155823"
  },
  "r173": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "440",
   "URI": "http://asc.fasb.org/topic&trid=2144648"
  },
  "r174": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=118942415&loc=d3e14615-108349"
  },
  "r175": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "450",
   "URI": "http://asc.fasb.org/topic&trid=2127136"
  },
  "r176": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601"
  },
  "r177": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=SL6230698-112601"
  },
  "r178": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870"
  },
  "r179": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870"
  },
  "r18": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(19))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r180": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "470",
   "URI": "http://asc.fasb.org/topic&trid=2208564"
  },
  "r181": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644"
  },
  "r182": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644"
  },
  "r183": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644"
  },
  "r184": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644"
  },
  "r185": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644"
  },
  "r186": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3-04)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770"
  },
  "r187": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "505",
   "URI": "http://asc.fasb.org/topic&trid=2208762"
  },
  "r188": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044"
  },
  "r189": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044"
  },
  "r19": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(22))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r190": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045"
  },
  "r191": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045"
  },
  "r192": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045"
  },
  "r193": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045"
  },
  "r194": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=118944142&loc=SL49130690-203046-203046"
  },
  "r195": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "606",
   "URI": "http://asc.fasb.org/topic&trid=49130388"
  },
  "r196": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "705",
   "URI": "http://asc.fasb.org/topic&trid=2122478"
  },
  "r197": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "710",
   "URI": "http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367"
  },
  "r198": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "710",
   "URI": "http://asc.fasb.org/topic&trid=2127225"
  },
  "r199": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "712",
   "URI": "http://asc.fasb.org/topic&trid=2197446"
  },
  "r2": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r20": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r200": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(ii)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r201": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(01)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r202": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(n)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r203": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921"
  },
  "r204": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "70",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942"
  },
  "r205": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "715",
   "URI": "http://asc.fasb.org/topic&trid=2235017"
  },
  "r206": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116855982&loc=d3e4534-113899"
  },
  "r207": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
  },
  "r208": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
  },
  "r209": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901"
  },
  "r21": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r210": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r211": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a),(g)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r212": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b),(f(1))",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r213": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r214": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r215": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r216": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(i)-(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r217": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r218": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r219": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(3)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r22": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(28))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r220": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(3)-(4)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r221": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(i)-(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r222": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(iii)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r223": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(iii)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r224": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(iii)(3)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r225": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r226": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r227": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r228": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r229": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r23": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(29))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r230": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r231": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r232": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r233": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r234": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)(iv)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r235": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r236": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(1)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r237": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r238": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901"
  },
  "r239": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901"
  },
  "r24": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30)(a)(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r240": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 14.D.2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809"
  },
  "r241": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 14.F)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809"
  },
  "r242": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=118258462&loc=d3e11149-113907"
  },
  "r243": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=118258462&loc=d3e11178-113907"
  },
  "r244": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "718",
   "URI": "http://asc.fasb.org/topic&trid=2228938"
  },
  "r245": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "720",
   "URI": "http://asc.fasb.org/extlink&oid=6419918&loc=d3e35281-107843"
  },
  "r246": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "35",
   "Subparagraph": "(a)",
   "Topic": "720",
   "URI": "http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848"
  },
  "r247": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "35",
   "Subparagraph": "(b)",
   "Topic": "720",
   "URI": "http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848"
  },
  "r248": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314"
  },
  "r249": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314"
  },
  "r25": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30)(a)(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r250": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=SL37586934-109318"
  },
  "r251": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32059-109318"
  },
  "r252": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318"
  },
  "r253": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32247-109318"
  },
  "r254": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116821951&loc=d3e32280-109318"
  },
  "r255": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319"
  },
  "r256": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319"
  },
  "r257": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r258": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r259": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r26": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r260": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r261": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r262": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(3)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r263": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(4)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r264": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r265": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r266": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319"
  },
  "r267": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "19",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319"
  },
  "r268": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r269": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r27": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(31))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r270": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r271": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r272": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32847-109319"
  },
  "r273": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319"
  },
  "r274": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319"
  },
  "r275": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319"
  },
  "r276": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319"
  },
  "r277": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r278": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r279": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r28": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(32))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r280": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "217",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=117331294&loc=d3e36027-109320"
  },
  "r281": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 6.I)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r282": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.7)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r283": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324"
  },
  "r284": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "30",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=65884525&loc=d3e40913-109327"
  },
  "r285": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "740",
   "URI": "http://asc.fasb.org/topic&trid=2144680"
  },
  "r286": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "808",
   "URI": "http://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434"
  },
  "r287": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=d3e5283-111683"
  },
  "r288": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=d3e5291-111683"
  },
  "r289": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "19",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683"
  },
  "r29": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.1)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r290": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684"
  },
  "r291": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
  },
  "r292": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
  },
  "r293": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4J",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686"
  },
  "r294": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4K",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686"
  },
  "r295": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-02(b))",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355033-122828"
  },
  "r296": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-02)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355033-122828"
  },
  "r297": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-03(b))",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355100-122828"
  },
  "r298": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3A-03)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116822174&loc=d3e355100-122828"
  },
  "r299": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "810",
   "URI": "http://asc.fasb.org/topic&trid=2197479"
  },
  "r3": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r30": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.12)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r300": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959"
  },
  "r301": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959"
  },
  "r302": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "182",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=116861445&loc=SL5629052-113961"
  },
  "r303": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r304": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "230",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906"
  },
  "r305": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r306": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r307": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r308": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399"
  },
  "r309": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399"
  },
  "r31": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r310": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399"
  },
  "r311": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400"
  },
  "r312": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694"
  },
  "r313": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77902458&loc=d3e39927-112707"
  },
  "r314": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737"
  },
  "r315": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "40",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=108788860&loc=d3e50609-112754"
  },
  "r316": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77913982&loc=d3e50796-112755"
  },
  "r317": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=77914019&loc=d3e50824-112756"
  },
  "r318": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "50",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=82846721&loc=d3e51831-112757"
  },
  "r319": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "51",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=82846721&loc=d3e51840-112757"
  },
  "r32": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r320": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "52",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "840",
   "URI": "http://asc.fasb.org/extlink&oid=82846721&loc=d3e51843-112757"
  },
  "r321": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "40",
   "Topic": "840",
   "URI": "http://asc.fasb.org/subtopic&trid=2209073"
  },
  "r322": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=119364159&loc=SL77916155-209984"
  },
  "r323": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977"
  },
  "r324": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977"
  },
  "r325": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977"
  },
  "r326": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977"
  },
  "r327": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977"
  },
  "r328": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(3)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980"
  },
  "r329": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r33": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.14)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r330": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r331": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r332": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(f)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r333": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(1)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r334": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(3)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r335": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(4)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r336": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980"
  },
  "r337": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980"
  },
  "r338": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "53",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971"
  },
  "r339": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888430&loc=SL77919786-209982"
  },
  "r34": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.17)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r340": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=77888430&loc=SL77919786-209982"
  },
  "r341": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "40",
   "Topic": "842",
   "URI": "http://asc.fasb.org/subtopic&trid=77888253"
  },
  "r342": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r343": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r344": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r345": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864"
  },
  "r346": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864"
  },
  "r347": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864"
  },
  "r348": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864"
  },
  "r349": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864"
  },
  "r35": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r350": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "850",
   "URI": "http://asc.fasb.org/topic&trid=2122745"
  },
  "r351": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "852",
   "URI": "http://asc.fasb.org/extlink&oid=116635682&loc=d3e55811-112764"
  },
  "r352": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "852",
   "URI": "http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766"
  },
  "r353": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662"
  },
  "r354": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314020-165662"
  },
  "r355": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "855",
   "URI": "http://asc.fasb.org/topic&trid=2122774"
  },
  "r356": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
  },
  "r357": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=118948506&loc=d3e107207-111719"
  },
  "r358": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
  },
  "r359": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r36": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(a),20,24)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r360": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r361": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r362": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r363": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r364": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r365": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r366": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r367": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r368": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r369": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(1)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r37": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(b),22(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r370": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(2)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r371": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(1)(a))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r372": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(11))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r373": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(13))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r374": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(15)(2))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r375": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(16))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r376": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(23))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878"
  },
  "r377": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(13)(f))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r378": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(22))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r379": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(23))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r38": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19,20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r380": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04.9)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260"
  },
  "r381": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "470",
   "Subparagraph": "(c)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
  },
  "r382": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "470",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
  },
  "r383": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(15)(b)(2))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r384": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r385": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(12))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r386": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r387": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r388": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(25))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r389": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(8))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910"
  },
  "r39": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19-26)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r390": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(10))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r391": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(18))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r392": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(19))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263"
  },
  "r393": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4H",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438"
  },
  "r394": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=117419784&loc=SL117783719-158441"
  },
  "r395": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.6-04(12)(b)(3))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996"
  },
  "r396": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "210",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=116631420&loc=SL116631458-115580"
  },
  "r397": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "740",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650"
  },
  "r398": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "220",
   "Subparagraph": "(a)",
   "Topic": "958",
   "URI": "http://asc.fasb.org/extlink&oid=114873921&loc=SL114875236-224282"
  },
  "r399": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Footnote 4))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024"
  },
  "r4": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r40": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r400": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b"
  },
  "r401": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r402": {
   "Name": "Forms 10-K, 10-Q, 20-F",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "13",
   "Subsection": "a-1-"
  },
  "r403": {
   "Name": "Forms 10-K, 20-F, 40-F",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "15",
   "Subsection": "d-1"
  },
  "r404": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r405": {
   "Name": "Regulation S-T",
   "Number": "232",
   "Publisher": "SEC",
   "Section": "405"
  },
  "r41": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.21)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r42": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22(a)(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r43": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r44": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.24)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r45": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.26(c))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r46": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.29)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r47": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.29-31)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r48": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.6(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r49": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.6(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r5": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765"
  },
  "r50": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.8)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r51": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.9)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682"
  },
  "r52": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580"
  },
  "r53": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580"
  },
  "r54": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116657188&loc=SL116659661-227067"
  },
  "r55": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(210.5-03(11))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r56": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(12))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r57": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(20))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r58": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(21))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r59": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(8))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r6": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6787-107765"
  },
  "r60": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.1,2)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r61": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.2(a),(d))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r62": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.3)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r63": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.4)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227"
  },
  "r64": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585"
  },
  "r65": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585"
  },
  "r66": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
  },
  "r67": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585"
  },
  "r68": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r69": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585"
  },
  "r7": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6801-107765"
  },
  "r70": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585"
  },
  "r71": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585"
  },
  "r72": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "24",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585"
  },
  "r73": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
  },
  "r74": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585"
  },
  "r75": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r76": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r77": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585"
  },
  "r78": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585"
  },
  "r79": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4273-108586"
  },
  "r8": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6812-107765"
  },
  "r80": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586"
  },
  "r81": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586"
  },
  "r82": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18726-107790"
  },
  "r83": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790"
  },
  "r84": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790"
  },
  "r85": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790"
  },
  "r86": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h)(2))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r87": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r88": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(k))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r89": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(e)(3)(ii))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r9": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=118951113&loc=d3e6911-107765"
  },
  "r90": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(e),(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r91": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r92": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(h)(1)(i))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r93": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(h)(2))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690"
  },
  "r94": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04(a))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690"
  },
  "r95": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690"
  },
  "r96": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04.(a))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690"
  },
  "r97": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "235",
   "URI": "http://asc.fasb.org/topic&trid=2122369"
  },
  "r98": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r99": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794"
  }
 },
 "version": "2.1"
}
