Significant Transactions During the Three Months Ended March 31, 2022 and Subsequent Events (Details) $ in Millions	1 Months Ended			3 Months Ended
	Mar. 31, 2022 USD ($)	Jan. 31, 2022 USD ($) apartment	Nov. 30, 2021 USD ($)	Mar. 31, 2022 USD ($) investment
Related Party Bridge Loan on Property In Vista, CA
Other Commitments [Line Items]
Proceeds from redemption of notes receivable		$ 48.5
Affiliated Entity | Related Party Bridge Loan on Property In Vista, CA
Other Commitments [Line Items]
Notes receivable			$ 48.4
Interest rate			2.36%
Affiliated Entity | Related Party Bridge Loan On Property Acquired By BEX II
Other Commitments [Line Items]
Notes receivable	$ 32.8		$ 32.8	$ 32.8
Interest rate	1.35%		1.35%
Preferred Equity Investment Property in Southern California and Washington
Other Commitments [Line Items]
Number of preferred equity investments | investment				3
Commitments to acquire equity method investment				$ 29.5
Preferred return rate				10.00%
Joint Venture That Holds Property In California
Other Commitments [Line Items]
Proceeds from partial redemption of co-investment				$ 106.9
Early redemption fee				$ 0.9
Number of preferred equity investments fully redeemed | investment				2
Number of preferred equity investments partially redeemed | investment				2
Vela On Ox | Affiliated Entity | Related Party Bridge Loan on Property Acquired By Wesco VI
Other Commitments [Line Items]
Notes receivable		$ 100.7
Interest rate		2.64%
Proceeds from redemption of notes receivable		$ 121.3
Vela On Ox | Wesco VI, LLC
Other Commitments [Line Items]
Payments to acquire real estate		$ 183.0
Vela On Ox | Apartment Building | Wesco VI, LLC
Other Commitments [Line Items]
Number of units acquired | apartment		379