{
 "instance": {
  "c497.htm": {
   "axisCustom": 0,
   "axisStandard": 1,
   "contextCount": 2,
   "dts": {
    "calculationLink": {
     "local": [
      "c497-20210628_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "c497-20210628_def.xml"
     ]
    },
    "inline": {
     "local": [
      "c497.htm"
     ]
    },
    "labelLink": {
     "local": [
      "c497-20210628_lab.xml"
     ],
     "remote": [
      "https://xbrl.sec.gov/dei/2020/dei-doc-2020-01-31.xml",
      "https://xbrl.sec.gov/rr/2018/rr-doc-2018-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "c497-20210628_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "https://xbrl.sec.gov/rr/2018/rr-ref-2018-01-31.xml",
      "https://xbrl.sec.gov/dei/2020/dei-ref-2020-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "c497-20210628.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",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "https://xbrl.sec.gov/dei/2020/dei-2020-01-31.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",
      "https://xbrl.sec.gov/rr/2018/rr-2018-01-31.xsd",
      "http://www.xbrl.org/2006/xbrldi-2006.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd"
     ]
    }
   },
   "elementCount": 38,
   "entityCount": 1,
   "hidden": {
    "http://xbrl.sec.gov/dei/2020-01-31": 8,
    "total": 8
   },
   "keyCustom": 0,
   "keyStandard": 100,
   "memberCustom": 1,
   "memberStandard": 0,
   "nsprefix": "cik0000773485",
   "nsuri": "http://troweprice.com/20210531",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "rr:ProspectusDate",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "false",
     "longName": "01001 - Document - Document and Entity Information {Elements}",
     "role": "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "rr:ProspectusDate",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R2": {
     "firstAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context_S000002096Member_S000002096SummaryMember",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "rr:SupplementToProspectusTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "false",
     "longName": "01002 - Document - Risk/Return Summary (T. Rowe Price Institutional Large-Cap Core Growth Fund) {Unlabeled}",
     "role": "http://troweprice.com/20210531/role/RRSummary2",
     "shortName": "Risk/Return Summary (T. Rowe Price Institutional Large-Cap Core Growth Fund)",
     "subGroupType": "",
     "uniqueAnchor": null
    },
    "R3": {
     "firstAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context_S000002096Member_S000002096SummaryMember",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "rr:SupplementToProspectusTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "01003 - Disclosure - Risk/Return Detail Data (T. Rowe Price Institutional Large-Cap Core Growth Fund) {Elements}",
     "role": "http://troweprice.com/20210531/role/RRDetailData3",
     "shortName": "Risk/Return Detail Data (T. Rowe Price Institutional Large-Cap Core Growth Fund)",
     "subGroupType": "",
     "uniqueAnchor": null
    },
    "S1": {
     "firstAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context_S000002096Member_S000002096SummaryMember",
      "decimals": null,
      "lang": "en-US",
      "name": "rr:SupplementToProspectusTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "RR_Summaries",
     "isDefault": "true",
     "longName": "000000010 - Disclosure - T. Rowe Price Institutional Large-Cap Core Growth Fund",
     "section": 0,
     "shortName": "T. Rowe Price Institutional Large-Cap Core Growth Fund",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context_S000002096Member_S000002096SummaryMember",
      "decimals": null,
      "lang": "en-US",
      "name": "rr:SupplementToProspectusTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "S2": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context",
      "decimals": null,
      "lang": "en-US",
      "name": "rr:ProspectusDate",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "RR_Summaries",
     "isDefault": "false",
     "longName": "000000027 - Disclosure - Document and Entity Information",
     "section": 1,
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "c497.htm",
      "contextRef": "Context",
      "decimals": null,
      "lang": "en-US",
      "name": "rr:ProspectusDate",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 1,
   "tag": {
    "cik0000773485_S000002096Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "T. Rowe Price Institutional Large-Cap Core Growth Fund",
        "label": "S 000002096 [Member]",
        "terseLabel": "T. Rowe Price Institutional Large-Cap Core Growth Fund"
       }
      }
     },
     "localname": "S000002096Member",
     "nsuri": "http://troweprice.com/20210531",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "domainItemType"
    },
    "cik0000773485_S000002096SummaryMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Prospectus Summary",
        "label": "S 000002096 Summary [Member]",
        "terseLabel": "Prospectus Summary"
       }
      }
     },
     "localname": "S000002096SummaryMember",
     "nsuri": "http://troweprice.com/20210531",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "domainItemType"
    },
    "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",
        "terseLabel": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentCreationDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The date the document was made available and submitted, in YYYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.",
        "label": "Document Creation Date",
        "terseLabel": "Document Creation Date"
       }
      }
     },
     "localname": "DocumentCreationDate",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of the document as assigned by the filer, corresponding to SEC document naming convention standards.",
        "label": "Prospectus",
        "terseLabel": "Prospectus"
       }
      }
     },
     "localname": "DocumentDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_DocumentEffectiveDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The date when a document, upon receipt and acceptance, becomes officially effective, in YYYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.",
        "label": "Document Effective Date",
        "terseLabel": "Document Effective Date"
       }
      }
     },
     "localname": "DocumentEffectiveDate",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentInformationDocumentAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.",
        "label": "Document [Axis]",
        "terseLabel": "Document [Axis]"
       }
      }
     },
     "localname": "DocumentInformationDocumentAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "stringItemType"
    },
    "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 YYYY-MM-DD.",
        "label": "Document Period End Date",
        "terseLabel": "Document Period End Date"
       }
      }
     },
     "localname": "DocumentPeriodEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "dateItemType"
    },
    "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",
        "terseLabel": "Document Type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r12"
     ],
     "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",
        "terseLabel": "Entity Central Index Key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains."
       }
      }
     },
     "localname": "EntityDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_EntityInvCompanyType": {
     "auth_ref": [
      "r13"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "One of: N-1A (Mutual Fund), N-1 (Open-End Separate Account with No Variable Annuities), N-2 (Closed-End Investment Company), N-3 (Separate Account Registered as Open-End Management Investment Company), N-4 (Variable Annuity UIT Separate Account), N-5 (Small Business Investment Company), N-6 (Variable Life UIT Separate Account), S-1 or S-3 (Face Amount Certificate Company), S-6 (UIT, Non-Insurance Product).",
        "label": "EntityInvCompanyType",
        "terseLabel": "EntityInvCompanyType"
       }
      }
     },
     "localname": "EntityInvCompanyType",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "invCompanyType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r12"
     ],
     "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": "Registrant Name",
        "terseLabel": "Registrant Name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_LegalEntityAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The set of legal entities associated with a report.",
        "label": "Series [Axis]",
        "terseLabel": "Series [Axis]"
       }
      }
     },
     "localname": "LegalEntityAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "stringItemType"
    },
    "rr_AcquiredFundFeesAndExpensesOverAssets": {
     "auth_ref": [
      "r10"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 5.0,
       "parentTag": "rr_ExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total Annual Fund Operating Expenses."
       }
      }
     },
     "localname": "AcquiredFundFeesAndExpensesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_AnnualFundOperatingExpensesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.",
        "label": "Annual Fund Operating Expenses [Table]",
        "terseLabel": "Annual Fund Operating Expenses [Table]"
       }
      }
     },
     "localname": "AnnualFundOperatingExpensesTableTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    },
    "rr_BarChartTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contains a command for the SEC Viewer for the role corresponding to BarChartData.",
        "label": "Bar Chart [Table]",
        "terseLabel": "Bar Chart [Table]"
       }
      }
     },
     "localname": "BarChartTableTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    },
    "rr_Component1OtherExpensesOverAssets": {
     "auth_ref": [
      "r7"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 1.0,
       "parentTag": "rr_OtherExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising \"Other Expenses,\" but must include a total of all \"Other Expenses.\" Alternatively, the Fund may include the components of \"Other Expenses\" in a parenthetical to the caption."
       }
      }
     },
     "localname": "Component1OtherExpensesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_Component2OtherExpensesOverAssets": {
     "auth_ref": [
      "r9"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 2.0,
       "parentTag": "rr_OtherExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising \"Other Expenses,\" but must include a total of all \"Other Expenses.\" Alternatively, the Fund may include the components of \"Other Expenses\" in a parenthetical to the caption."
       }
      }
     },
     "localname": "Component2OtherExpensesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_Component3OtherExpensesOverAssets": {
     "auth_ref": [
      "r7"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 3.0,
       "parentTag": "rr_OtherExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising \"Other Expenses,\" but must include a total of all \"Other Expenses.\" Alternatively, the Fund may include the components of \"Other Expenses\" in a parenthetical to the caption."
       }
      }
     },
     "localname": "Component3OtherExpensesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_DistributionAndService12b1FeesOverAssets": {
     "auth_ref": [
      "r11"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 2.0,
       "parentTag": "rr_ExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Distribution [and/or Service] (12b-1) Fees\" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of \"Other Expenses,\" disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan."
       }
      }
     },
     "localname": "DistributionAndService12b1FeesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_DistributionOrSimilarNon12b1FeesOverAssets": {
     "auth_ref": [
      "r5"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 3.0,
       "parentTag": "rr_ExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Distribution [and/or Service] (12b-1) Fees\" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of \"Other Expenses,\" disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan."
       }
      }
     },
     "localname": "DistributionOrSimilarNon12b1FeesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_ExpenseExampleNoRedemptionTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.",
        "label": "Expense Example, No Redemption [Table]",
        "terseLabel": "Expense Example, No Redemption [Table]"
       }
      }
     },
     "localname": "ExpenseExampleNoRedemptionTableTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    },
    "rr_ExpenseExampleWithRedemptionTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contains a command for the SEC Viewer for the role corresponding to ExpenseExample.",
        "label": "Expense Example, With Redemption [Table]",
        "terseLabel": "Expense Example, With Redemption [Table]"
       }
      }
     },
     "localname": "ExpenseExampleWithRedemptionTableTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    },
    "rr_ExpensesOverAssets": {
     "auth_ref": [
      "r8"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 1.0,
       "parentTag": "rr_NetExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund.  Base the percentages of \"Annual Fund Operating Expenses\" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining \"Annual Fund Operating Expenses.\""
       }
      }
     },
     "localname": "ExpensesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_FeeWaiverOrReimbursementOverAssets": {
     "auth_ref": [
      "r10"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 2.0,
       "parentTag": "rr_NetExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the \"Total Annual Fund Operating Expenses\" caption of the table and should use appropriate descriptive captions, such as \"Fee Waiver [and/or Expense Reimbursement]\" and \"Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement],\" respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances."
       }
      }
     },
     "localname": "FeeWaiverOrReimbursementOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonPositivePure4Type"
    },
    "rr_ManagementFeesOverAssets": {
     "auth_ref": [
      "r4"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 1.0,
       "parentTag": "rr_ExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Management Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as \"Other Expenses.\""
       }
      }
     },
     "localname": "ManagementFeesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_MarketIndexPerformanceTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contains a command for the SEC Viewer for the role corresponding to MarketIndexPerformanceData.",
        "label": "Market Index Performance [Table]",
        "terseLabel": "Market Index Performance [Table]"
       }
      }
     },
     "localname": "MarketIndexPerformanceTableTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    },
    "rr_NetExpensesOverAssets": {
     "auth_ref": [
      "r10"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total Annual Fund Operating Expenses."
       }
      }
     },
     "localname": "NetExpensesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_OtherExpensesOverAssets": {
     "auth_ref": [
      "r6"
     ],
     "calculation": {
      "http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
       "order": 4.0,
       "parentTag": "rr_ExpensesOverAssets",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "\"Other Expenses\" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]).  \"Other Expenses\" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's \"Other Expenses,\" disclose in a footnote to the table what \"Other Expenses\" would have been had the extraordinary expenses been included."
       }
      }
     },
     "localname": "OtherExpensesOverAssets",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "NonNegativePure4Type"
    },
    "rr_PerformanceTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contains a command for the SEC Viewer for the role corresponding to PerformanceTableData.",
        "label": "Performance [Table]",
        "terseLabel": "Performance [Table]"
       }
      }
     },
     "localname": "PerformanceTableTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    },
    "rr_ProspectusDate": {
     "auth_ref": [
      "r3"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The date of the prospectus.",
        "label": "Prospectus Date",
        "terseLabel": "Prospectus Date"
       }
      }
     },
     "localname": "ProspectusDate",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1"
     ],
     "xbrltype": "dateItemType"
    },
    "rr_ProspectusShareClassAxis": {
     "auth_ref": [
      "r1"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Prospectus Share Class Axis.",
        "label": "Share Class [Axis]",
        "terseLabel": "Share Class [Axis]"
       }
      }
     },
     "localname": "ProspectusShareClassAxis",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3"
     ],
     "xbrltype": "stringItemType"
    },
    "rr_ProspectusTable": {
     "auth_ref": [
      "r1"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Prospectus Table.",
        "label": "Prospectus:",
        "terseLabel": "Prospectus:"
       }
      }
     },
     "localname": "ProspectusTable",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "xbrltype": "stringItemType"
    },
    "rr_RiskReturnAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Risk/Return:",
        "terseLabel": "Risk/Return:"
       }
      }
     },
     "localname": "RiskReturnAbstract",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "stringItemType"
    },
    "rr_ShareClassDomain": {
     "auth_ref": [
      "r2"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "All members of this domain must be elements with name starting with \"C\" and consisting of a 9-digit Fund share class CIK."
       }
      }
     },
     "localname": "ShareClassDomain",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/DocumentAndEntityInformation1",
      "http://troweprice.com/20210531/role/RRDetailData3"
     ],
     "xbrltype": "domainItemType"
    },
    "rr_ShareholderFeesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.",
        "label": "Shareholder Fees [Table]",
        "terseLabel": "Shareholder Fees [Table]"
       }
      }
     },
     "localname": "ShareholderFeesTableTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    },
    "rr_SupplementToProspectusTextBlock": {
     "auth_ref": [
      "r0"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This element contains the text of a prospectus supplement (submission type 497) not already contained in an element containing amended text or other data from a previous submission.",
        "label": "Supplement to Prospectus [Text Block]",
        "terseLabel": "Supplement to Prospectus [Text Block]"
       }
      }
     },
     "localname": "SupplementToProspectusTextBlock",
     "nsuri": "http://xbrl.sec.gov/rr/2018-01-31",
     "presentation": [
      "http://troweprice.com/20210531/role/RRDetailData3",
      "http://troweprice.com/20210531/role/RRSummary2"
     ],
     "xbrltype": "textBlockItemType"
    }
   },
   "unitCount": 2
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Form",
   "Number": "N-1A",
   "Publisher": "SEC"
  },
  "r1": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Publisher": "SEC"
  },
  "r10": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "1",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "11",
   "Subsection": "table"
  },
  "r11": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "1",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "9",
   "Subsection": "table"
  },
  "r12": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r13": {
   "Name": "Regulation S-T",
   "Number": "232",
   "Publisher": "SEC",
   "Section": "313"
  },
  "r2": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "1",
   "Publisher": "SEC",
   "Section": "1",
   "Subsection": "a"
  },
  "r3": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "3",
   "Publisher": "SEC",
   "Section": "1",
   "Subsection": "a"
  },
  "r4": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "3",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "a",
   "Subsection": "instructions"
  },
  "r5": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "3",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "b",
   "Subsection": "instructions"
  },
  "r6": {
   "Chapter": "A",
   "Clause": "i",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "3",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "c",
   "Subsection": "instructions"
  },
  "r7": {
   "Chapter": "A",
   "Clause": "iii",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "3",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "c",
   "Subsection": "instructions"
  },
  "r8": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "3",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "d",
   "Subsection": "instructions"
  },
  "r9": {
   "Chapter": "A",
   "Name": "Form",
   "Number": "N-1A",
   "Paragraph": "1",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "10",
   "Subsection": "table"
  }
 },
 "version": "2.1"
}
