Segment Reporting - Summary of Total Assets by Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total Assets	$ 19,971,431	$ 5,330,816
Multifamily Properties
Segment Reporting Information [Line Items]
Total Assets	12,225,256	2,738,210
Single-Family Rental Units
Segment Reporting Information [Line Items]
Total Assets	1,150,987
Hospitality Properties
Segment Reporting Information [Line Items]
Total Assets	240,326	244,065
Industrial properties
Segment Reporting Information [Line Items]
Total Assets	2,145,163	551,898
Office properties
Segment Reporting Information [Line Items]
Total Assets	1,599,774	1,186,328
Medical office properties
Segment Reporting Information [Line Items]
Total Assets	191,881	196,559
Self-Storage Properties
Segment Reporting Information [Line Items]
Total Assets	331,024
Other Properties
Segment Reporting Information [Line Items]
Total Assets	332,507
Investments in real estate debt
Segment Reporting Information [Line Items]
Total Assets	954,077	218,225
Other (Corporate)
Segment Reporting Information [Line Items]
Total Assets	$ 800,436	$ 195,531