Real Estate Investments - Operating, Pre-Development, and Development Co-Investments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) apartment	Dec. 31, 2020 USD ($) apartment
Real Estate Properties [Line Items]
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	$ 1,142,257	$ 1,018,010
Number of units to be developed | apartment	371
Total operating and other co-investments, net
Real Estate Properties [Line Items]
Number of apartments owned through joint ventures | apartment	10,257	8,652,000
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	$ 565,251	$ 358,266
Total development co-investments
Real Estate Properties [Line Items]
Number of apartments owned through joint ventures | apartment	264	1,070
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	$ 11,076	$ 157,433
Mesa Village
Real Estate Properties [Line Items]
Number of units to be developed | apartment		264
Equity method investment, ownership percentage		51.00%
Estimated cost active development projects		$ 102,000
Purchase commitment, funded amount	$ 5,900
Annualized preferred return rate	10.00%