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Reportable Segments - NOI from Our Rental Real Estate for Continuing Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Rental income | $ 782,411 | $ 748,348 | $ 2,312,048 | $ 2,213,329
Operating expenses | 256,454 | 241,175 | 760,785 | 716,801
NOI | 525,957 | 507,173 | 1,551,263 | 1,496,528
Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 727,555 | 706,135 | 2,145,055 | 2,090,438
Operating expenses | 234,572 | 226,494 | 691,712 | 665,731
NOI | 492,983 | 479,641 | 1,453,343 | 1,424,707
Los Angeles | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 122,414 | 120,210 | 364,899 | 359,596
Operating expenses | 38,867 | 37,415 | 115,456 | 111,101
NOI | 83,547 | 82,795 | 249,443 | 248,495
Orange County | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 32,216 | 31,487 | 96,026 | 93,760
Operating expenses | 7,486 | 7,306 | 21,707 | 21,111
NOI | 24,730 | 24,181 | 74,319 | 72,649
San Diego | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 21,482 | 20,802 | 63,874 | 62,172
Operating expenses | 4,748 | 4,518 | 14,055 | 13,121
NOI | 16,734 | 16,284 | 49,819 | 49,051
Subtotal - Southern California | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 176,112 | 172,499 | 524,799 | 515,528
Operating expenses | 51,101 | 49,239 | 151,218 | 145,333
NOI | 125,011 | 123,260 | 373,581 | 370,195
San Francisco | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 116,271 | 109,811 | 337,075 | 322,643
Operating expenses | 34,509 | 33,550 | 101,315 | 97,285
NOI | 81,762 | 76,261 | 235,760 | 225,358
New York | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 129,940 | 123,506 | 384,057 | 369,642
Operating expenses | 52,099 | 49,949 | 156,931 | 151,404
NOI | 77,841 | 73,557 | 227,126 | 218,238
Washington D.C. | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 113,992 | 110,288 | 332,425 | 319,579
Operating expenses | 37,791 | 36,122 | 107,042 | 101,973
NOI | 76,201 | 74,166 | 225,383 | 217,606
Boston | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 80,416 | 79,872 | 240,793 | 238,308
Operating expenses | 24,599 | 22,732 | 72,807 | 68,678
NOI | 55,817 | 57,140 | 167,986 | 169,630
Seattle | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 70,742 | 68,519 | 209,873 | 204,493
Operating expenses | 20,279 | 19,784 | 59,936 | 58,647
NOI | 50,463 | 48,735 | 149,937 | 145,846
Denver | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 18,878 | 19,649 | 57,246 | 59,339
Operating expenses | 5,893 | 6,117 | 17,702 | 17,952
NOI | 12,985 | 13,532 | 39,544 | 41,387
Other Expansion Markets | Same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 21,204 | 21,991 | 58,787 | 60,906
Operating expenses | 8,301 | 9,001 | 24,761 | 24,459
NOI | 12,903 | 12,990 | 34,026 | 36,447
Non-same store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 51,872 | 17,287 | 149,440 | 43,763
Operating expenses | 18,962 | 6,160 | 54,171 | 18,623
NOI | 32,910 | 11,127 | 95,269 | 25,140
Same and Non-same Store |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 779,427 | 723,422 | 2,294,495 | 2,134,201
Operating expenses | 253,534 | 232,654 | 745,883 | 684,354
NOI | 525,893 | 490,768 | 1,548,612 | 1,449,847
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental income | 2,984 | 24,926 | 17,553 | 79,128
Operating expenses | 2,920 | 8,521 | 14,902 | 32,447
NOI | $ 64 | $ 16,405 | $ 2,651 | $ 46,681

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