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Reportable Segments - NOI from Our Rental Real Estate for Each Segment Specific to Continuing Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | $ 748,348 | $ 724,067 | $ 2,213,329 | $ 2,146,464 |
Operating expenses | 241,175 | 231,945 | 716,801 | 704,044 |
NOI | 507,173 | 492,122 | 1,496,528 | 1,442,420 |
Total Assets | 20,925,821 |  | 20,925,821 |  | $ 20,034,564
Capital Expenditures |  |  | 230,107 |  |
Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 722,308 | 703,370 | 2,151,275 | 2,083,707 |
Operating expenses | 230,098 | 223,047 | 684,342 | 668,633 |
NOI | 492,210 | 480,323 | 1,466,933 | 1,415,074 |
Total Assets | 18,053,026 |  | 18,053,026 |  |
Capital Expenditures |  |  | 213,845 |  |
Non-same store/other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 26,040 | 20,697 | 62,054 | 62,757 |
Operating expenses | 11,077 | 8,898 | 32,459 | 35,411 |
NOI | 14,963 | 11,799 | 29,595 | 27,346 |
Total Assets | 2,872,795 |  | 2,872,795 |  |
Capital Expenditures |  |  | 16,262 |  |
Los Angeles | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 120,211 | 118,812 | 359,597 | 348,595 |
Operating expenses | 37,670 | 36,343 | 111,273 | 108,917 |
NOI | 82,541 | 82,469 | 248,324 | 239,678 |
Total Assets | 2,441,079 |  | 2,441,079 |  |
Capital Expenditures |  |  | 39,778 |  |
Orange County | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 31,488 | 30,663 | 93,760 | 90,080 |
Operating expenses | 7,248 | 6,792 | 21,113 | 20,188 |
NOI | 24,240 | 23,871 | 72,647 | 69,892 |
Total Assets | 334,057 |  | 334,057 |  |
Capital Expenditures |  |  | 12,059 |  |
San Diego | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 25,969 | 25,258 | 77,784 | 74,183 |
Operating expenses | 6,071 | 5,820 | 17,731 | 17,371 |
NOI | 19,898 | 19,438 | 60,053 | 56,812 |
Total Assets | 335,471 |  | 335,471 |  |
Capital Expenditures |  |  | 12,061 |  |
Subtotal - Southern California | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 177,668 | 174,733 | 531,141 | 512,858 |
Operating expenses | 50,989 | 48,955 | 150,117 | 146,476 |
NOI | 126,679 | 125,778 | 381,024 | 366,382 |
Total Assets | 3,110,607 |  | 3,110,607 |  |
Capital Expenditures |  |  | 63,898 |  |
Washington D.C. | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 117,306 | 112,681 | 347,229 | 331,425 |
Operating expenses | 38,351 | 35,616 | 110,104 | 107,050 |
NOI | 78,955 | 77,065 | 237,125 | 224,375 |
Total Assets | 2,980,055 |  | 2,980,055 |  |
Capital Expenditures |  |  | 35,160 |  |
San Francisco | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 108,957 | 107,808 | 325,999 | 321,310 |
Operating expenses | 33,313 | 32,769 | 99,012 | 98,504 |
NOI | 75,644 | 75,039 | 226,987 | 222,806 |
Total Assets | 2,996,799 |  | 2,996,799 |  |
Capital Expenditures |  |  | 42,555 |  |
New York | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 123,506 | 118,327 | 369,642 | 356,157 |
Operating expenses | 50,011 | 48,055 | 151,331 | 145,192 |
NOI | 73,495 | 70,272 | 218,311 | 210,965 |
Total Assets | 3,241,250 |  | 3,241,250 |  |
Capital Expenditures |  |  | 19,683 |  |
Boston | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 81,941 | 78,562 | 244,474 | 234,291 |
Operating expenses | 23,156 | 22,875 | 69,882 | 69,072 |
NOI | 58,785 | 55,687 | 174,592 | 165,219 |
Total Assets | 2,028,747 |  | 2,028,747 |  |
Capital Expenditures |  |  | 21,954 |  |
Seattle | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 75,032 | 72,778 | 223,656 | 218,574 |
Operating expenses | 21,907 | 20,883 | 65,197 | 62,055 |
NOI | 53,125 | 51,895 | 158,459 | 156,519 |
Total Assets | 2,023,139 |  | 2,023,139 |  |
Capital Expenditures |  |  | 22,405 |  |
Denver | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 19,649 | 19,802 | 53,522 | 53,324 |
Operating expenses | 6,062 | 5,937 | 16,190 | 16,161 |
NOI | 13,587 | 13,865 | 37,332 | 37,163 |
Total Assets | 799,928 |  | 799,928 |  |
Capital Expenditures |  |  | 3,036 |  |
Other Expansion Markets | Same Store |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 18,249 | 18,679 | 55,612 | 55,768 |
Operating expenses | 6,309 | 7,957 | 22,509 | 24,123 |
NOI | 11,940 | 10,722 | 33,103 | 31,645 |
Total Assets | 872,501 |  | 872,501 |  |
Capital Expenditures |  |  | 5,154 |  |
Non-same store | Non-same store/other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 25,391 | 8,059 | 54,874 | 22,406 |
Operating expenses | 9,371 | 4,099 | 22,230 | 10,893 |
NOI | 16,020 | 3,960 | 32,644 | 11,513 |
Total Assets | 1,998,651 |  | 1,998,651 |  |
Capital Expenditures |  |  | 15,724 |  |
Other | Non-same store/other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Rental income | 649 | 12,638 | 7,180 | 40,351 |
Operating expenses | 1,706 | 4,799 | 10,229 | 24,518 |
NOI | (1,057) | $ 7,839 | (3,049) | $ 15,833 |
Total Assets | $ 874,144 |  | 874,144 |  |
Capital Expenditures |  |  | $ 538 |  |

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