Real Estate Investments - Narrative (Details) $ in Thousands	1 Months Ended				3 Months Ended	12 Months Ended
	Nov. 30, 2025 USD ($) unit	Sep. 30, 2025 USD ($) community	Jul. 31, 2025 USD ($) unit	Oct. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) property apartment community unit investment	Dec. 31, 2025 USD ($) investment apartment project community	Dec. 31, 2024 USD ($) property apartment community investment	Dec. 31, 2023 USD ($) apartment
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share							$ 849,400
Apartment communities owned (in communities)					13	259	13
Gain on remeasurement of co-investment						$ 330	$ 210,555	$ 0
Number of apartments owned through joint ventures | community					10		10
Management and other fees from affiliates						9,381	$ 10,265	11,131
Co-investment, committed capital					$ 86,000	86,000	86,000
Co-investment					57,300	74,700	57,300
Equity income from co-investments						35,464	48,206	10,561
Co-investments					855,741	$ 531,713	855,741
Number of investments with a commitment to fund | investment						10
Preferred equity investment, commitment to fund						$ 206,700
Preferred equity investment, funded loan commitments						$ 171,700
Annualized preferred return rate						10.50%
Co-investment					$ 935,014	$ 630,550	935,014
Payments to acquire equity method investments						33,752	34,073	37,405
Impairment loss from unconsolidated co-investments						12,600	3,700	$ 33,700
Proceeds from dispositions of co-investments						$ 186,500	$ 58,800
Number of consolidated project | project						1
Apartment Building
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share						$ 829,500
Apartment Homes | apartment						1,019	697	239
Proceeds from sale of real estate						$ 516,400	$ 205,700	$ 91,700
Gain (loss) on sale of properties							$ 175,600	54,500
Apartment Homes | apartment						1,523
Land
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of real estate								8,700
Gain (loss) on sale of properties								$ 4,700
Highridge
Schedule of Equity Method Investments [Line Items]
Joint venture ownership percent					81.50%		81.50%
Proceeds from sale of real estate							$ 252,400
Wesco V, LLC
Schedule of Equity Method Investments [Line Items]
Joint venture ownership percent		50.00%
Proceeds from sale of real estate		$ 94,900
Number of apartment communities sold | community		1
Equity income from co-investments		$ 5,200
Total operating and other co-investments, net
Schedule of Equity Method Investments [Line Items]
Number of apartments owned through joint ventures | apartment					7,694	7,483	7,694
Co-investments					$ 379,500	$ 304,400	$ 379,500
Apartment Home Community Located In Los Angeles
Schedule of Equity Method Investments [Line Items]
Co-investment	$ 79,500
Debt instrument, repaid, principal	88,200
Apartment Home Community Located In Los Angeles | Apartment Building
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share	$ 167,700
Apartment Homes | unit	376
Wesco VII LLC
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments			$ 50,000
Ownership percentage			50.00%
Preferred equity investment			$ 42,600
Apartment homes | unit			480
Annualized preferred return rate			13.50%
Stabilized Apartment Home Community Located In Oakland
Schedule of Equity Method Investments [Line Items]
Gain on remeasurement of co-investment					$ 300
Co-investment				$ 22,700
Apartment Homes | unit					241
Value of property					$ 95,000
Debt instrument, repaid, principal				$ 72,000	$ 72,000
Preferred Equity Investment
Schedule of Equity Method Investments [Line Items]
Number of investments with a commitment to fund | investment					2	8	2
Preferred Equity Investment Property In Washington and California
Schedule of Equity Method Investments [Line Items]
Number of investments with a commitment to fund | investment					1		1
Land and Land Improvements
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share						$ 156,100
Land and Land Improvements | CPPIB Interest
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share							$ 231,600
Building and Improvements
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share						670,700
Building and Improvements | CPPIB Interest
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share							1,178,000
Prepaid Expenses and Other Assets
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share						$ 7,300
Prepaid Expenses and Other Assets | CPPIB Interest
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share							9,000
Real Estate Under Development
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share							26,300
Fixed rate mortgage notes payable
Schedule of Equity Method Investments [Line Items]
Contract Price at Pro Rata Share							$ 106,000