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Investments in Partially Owned Entities - Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs (Details)	Sep. 30, 2024 Project Entity ApartmentUnit Property
Variable Interest Entity [Line Items]
Properties | Property	312
Apartment units	84,018
Variable Interest Entity, Not Primary Beneficiary | Operating Properties [Member]
Variable Interest Entity [Line Items]
Properties | Property	1
Apartment units	209
Variable Interest Entity, Not Primary Beneficiary | Real Estate Holdings [Member]
Variable Interest Entity [Line Items]
Entities | Entity	3
Variable Interest Entity, Not Primary Beneficiary | Projects Under Development [Member]
Variable Interest Entity [Line Items]
Project | Project	7
Apartment units	2,412
Variable Interest Entity, Not Primary Beneficiary | Projects Held for Development [Member]
Variable Interest Entity [Line Items]
Project | Project	2
Apartment units	526

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