Segment Reporting - Summary of Total Assets by Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total Assets	$ 21,667,101	$ 19,971,431
Multifamily Properties
Segment Reporting Information [Line Items]
Total Assets	12,305,156	12,225,256
Single Family Rental Homes
Segment Reporting Information [Line Items]
Total Assets	1,207,827	1,150,987
Industrial properties
Segment Reporting Information [Line Items]
Total Assets	2,275,565	2,145,163
Office properties
Segment Reporting Information [Line Items]
Total Assets	1,482,714	1,599,774
Self-Storage Properties
Segment Reporting Information [Line Items]
Total Assets	371,255	331,024
Other Property
Segment Reporting Information [Line Items]
Total Assets	761,348	764,714
Investments in real estate debt
Segment Reporting Information [Line Items]
Total Assets	1,031,340	954,077
Other (Corporate)
Segment Reporting Information [Line Items]
Total Assets	$ 2,231,896	$ 800,436