Segment Information - Summary of Certain Balance Sheet Data by Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Segment Reporting Information
Real estate, at cost	$ 5,606,587	$ 6,236,476
Investments in unconsolidated real estate ventures	414,349	462,885
Total assets	5,579,902	6,386,206
Operating Segments | Commercial Segment
Segment Reporting Information
Real estate, at cost	2,722,907	3,422,278
Investments in unconsolidated real estate ventures	233,519	281,515
Total assets	3,016,911	3,591,839
Operating Segments | Multifamily Segment
Segment Reporting Information
Real estate, at cost	2,481,213	2,367,712
Investments in unconsolidated real estate ventures	96,030	103,389
Total assets	1,856,493	1,797,807
Other
Segment Reporting Information
Real estate, at cost	402,467	446,486
Investments in unconsolidated real estate ventures	84,800	77,981
Total assets	$ 706,498	$ 996,560