Schedule III - Real Estate and Accumulated Depreciation-Overall Summary (Details)	Dec. 31, 2022 USD ($) Property ApartmentUnit	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Overall summary of real estate and accumulated depreciation
Investment in Real Estate, Gross	$ 28,088,754,000	$ 28,272,906,000	$ 27,203,325,000	$ 27,533,607,000
Accumulated Depreciation	$ (9,027,850,000)	$ (8,354,282,000)	$ (7,859,657,000)	$ (7,276,786,000)
Investment in Real Estate - Wholly Owned Unencumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	256
Units | ApartmentUnit	67,542
Investment in Real Estate, Gross	$ 23,810,329,470
Accumulated Depreciation	(7,664,733,730)
Investment in Real Estate, Net	16,145,595,740
Encumbrances	$ 0
Investment in Real Estate - Wholly Owned Encumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	37
Units | ApartmentUnit	8,941
Investment in Real Estate, Gross	$ 3,376,901,549
Accumulated Depreciation	(1,095,745,422)
Investment in Real Estate, Net	2,281,156,127
Encumbrances	$ 1,816,819,525
Wholly Owned Properties
Overall summary of real estate and accumulated depreciation
Properties | Property	293
Units | ApartmentUnit	76,483
Investment in Real Estate, Gross	$ 27,187,231,019
Accumulated Depreciation	(8,760,479,152)
Investment in Real Estate, Net	18,426,751,867
Encumbrances	$ 1,816,819,525
Investment in Real Estate - Partially Owned Unencumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	13
Units | ApartmentUnit	2,646
Investment in Real Estate, Gross	$ 666,489,021
Accumulated Depreciation	(239,628,682)
Investment in Real Estate, Net	426,860,339
Encumbrances	$ 0
Investment in Real Estate - Partially Owned Encumbered [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	2
Units | ApartmentUnit	468
Investment in Real Estate, Gross	$ 235,033,453
Accumulated Depreciation	(27,742,015)
Investment in Real Estate, Net	207,291,438
Encumbrances	$ 136,618,560
NONCONTROLLING INTERESTS - PARTIALLY OWNED PROPERTIES
Overall summary of real estate and accumulated depreciation
Properties | Property	15
Units | ApartmentUnit	3,114
Investment in Real Estate, Gross	$ 901,522,474
Accumulated Depreciation	(267,370,697)
Investment in Real Estate, Net	634,151,777
Encumbrances	$ 136,618,560
Unencumbered Properties [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	269
Units | ApartmentUnit	70,188
Investment in Real Estate, Gross	$ 24,476,818,491
Accumulated Depreciation	(7,904,362,412)
Investment in Real Estate, Net	16,572,456,079
Encumbrances	$ 0
Encumbered Properties [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	39
Units | ApartmentUnit	9,409
Investment in Real Estate, Gross	$ 3,611,935,002
Accumulated Depreciation	(1,123,487,437)
Investment in Real Estate, Net	2,488,447,565
Encumbrances	$ 1,953,438,085
Total Consolidated Investment in Real Estate [Member]
Overall summary of real estate and accumulated depreciation
Properties | Property	308
Units | ApartmentUnit	79,597
Investment in Real Estate, Gross	$ 28,088,753,493
Accumulated Depreciation	(9,027,849,849)
Investment in Real Estate, Net	19,060,903,644
Encumbrances	$ 1,953,438,085