Investments in Partially Owned Entities - Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs (Details)	Sep. 30, 2023 Project ApartmentUnit Entity
Variable Interest Entity [Line Items]
Apartment units	80,683
Variable Interest Entity, Not Primary Beneficiary | Real Estate Holdings [Member]
Variable Interest Entity [Line Items]
Entities | Entity	2
Variable Interest Entity, Not Primary Beneficiary | Projects Under Development [Member]
Variable Interest Entity [Line Items]
Project | Project	6
Apartment units	1,982
Variable Interest Entity, Not Primary Beneficiary | Projects Held for Development [Member]
Variable Interest Entity [Line Items]
Project | Project	4
Apartment units	1,334