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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 |  |  |

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