Investments in Partially Owned Entities - Summary of Information on Total Unconsolidated Development Joint Ventures (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) JointVenture ApartmentUnit	Sep. 30, 2022 USD ($)
Variable Interest Entity [Line Items]
Investments in unconsolidated entities - acquisitions	$ 989	$ 49,330
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of unconsolidated joint ventures | JointVenture	1
Apartment units | ApartmentUnit	368
Variable Interest Entity, Not Primary Beneficiary [Member] | Equity Residential [Member]
Variable Interest Entity [Line Items]
Investments in unconsolidated entities - acquisitions	$ 989