Leases - Summary of Lease Income Types Relating to Lease Payments Along With the Total Other Rental Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Leased Assets [Line Items]
Total lease revenue	$ 627,080	$ 573,974
Rental income	653,348	597,602
Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	610,970	557,081
Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	16,110	16,893
Residential and Non-Residential Rent [Member]
Operating Leased Assets [Line Items]
Total lease revenue	602,764	555,494
Residential and Non-Residential Rent [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	586,890	539,655
Residential and Non-Residential Rent [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	15,874	15,839
Utility Recoveries (RUBS Income) [Member]
Operating Leased Assets [Line Items]
Total lease revenue	19,779	18,132
Utility Recoveries (RUBS Income) [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	19,598	17,954
Utility Recoveries (RUBS Income) [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	181	178
Parking Rent [Member]
Operating Leased Assets [Line Items]
Total lease revenue	10,881	10,001
Parking Rent [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	10,783	9,734
Parking Rent [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	98	267
Other Lease Revenue [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(6,344)	(9,653)
Other Lease Revenue [Member] | Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(6,301)	(10,262)
Other Lease Revenue [Member] | Non-Residential Leases [Member]
Operating Leased Assets [Line Items]
Total lease revenue	(43)	609
Parking Revenue
Operating Leased Assets [Line Items]
Rental income	8,808	5,433
Other Revenue
Operating Leased Assets [Line Items]
Rental income	17,460	18,195
Other Rental Income [Member]
Operating Leased Assets [Line Items]
Rental income	$ 26,268	$ 23,628