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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 |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |  |
Rental income | $ 730,818 | $ 705,088 |
Operating expenses | 243,557 | 244,248 |
NOI | 487,261 | 460,840 |
Total Assets | 19,894,797 |  | $ 20,034,564
Capital Expenditures | 73,520 |  |
Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 716,665 | 688,303 |
Operating expenses | 231,905 | 228,961 |
NOI | 484,760 | 459,342 |
Total Assets | 18,404,886 |  |
Capital Expenditures | 66,071 |  |
Non-same store/other |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 14,153 | 16,785 |
Operating expenses | 11,652 | 15,287 |
NOI | 2,501 | 1,498 |
Total Assets | 1,489,911 |  |
Capital Expenditures | 7,449 |  |
Los Angeles | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 119,267 | 113,489 |
Operating expenses | 37,825 | 37,311 |
NOI | 81,442 | 76,178 |
Total Assets | 2,473,271 |  |
Capital Expenditures | 11,267 |  |
Orange County | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 31,101 | 29,372 |
Operating expenses | 6,927 | 6,694 |
NOI | 24,174 | 22,678 |
Total Assets | 335,110 |  |
Capital Expenditures | 2,569 |  |
San Diego | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 25,824 | 24,234 |
Operating expenses | 5,880 | 5,814 |
NOI | 19,944 | 18,420 |
Total Assets | 336,081 |  |
Capital Expenditures | 3,167 |  |
Subtotal - Southern California | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 176,192 | 167,095 |
Operating expenses | 50,632 | 49,819 |
NOI | 125,560 | 117,276 |
Total Assets | 3,144,462 |  |
Capital Expenditures | 17,003 |  |
Washington D.C. | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 116,387 | 110,255 |
Operating expenses | 36,528 | 37,153 |
NOI | 79,859 | 73,102 |
Total Assets | 3,098,097 |  |
Capital Expenditures | 12,202 |  |
San Francisco | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 109,313 | 107,286 |
Operating expenses | 34,967 | 34,246 |
NOI | 74,346 | 73,040 |
Total Assets | 3,043,672 |  |
Capital Expenditures | 13,622 |  |
New York | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 123,964 | 118,045 |
Operating expenses | 51,275 | 49,488 |
NOI | 72,689 | 68,557 |
Total Assets | 3,284,640 |  |
Capital Expenditures | 6,085 |  |
Boston | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 80,451 | 76,878 |
Operating expenses | 23,738 | 24,163 |
NOI | 56,713 | 52,715 |
Total Assets | 2,068,351 |  |
Capital Expenditures | 6,026 |  |
Seattle | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 73,832 | 72,778 |
Operating expenses | 21,277 | 20,221 |
NOI | 52,555 | 52,557 |
Total Assets | 2,061,322 |  |
Capital Expenditures | 8,590 |  |
Denver | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 17,808 | 17,596 |
Operating expenses | 5,447 | 5,474 |
NOI | 12,361 | 12,122 |
Total Assets | 816,012 |  |
Capital Expenditures | 1,007 |  |
Other Expansion Markets | Same Store |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 18,718 | 18,370 |
Operating expenses | 8,041 | 8,397 |
NOI | 10,677 | 9,973 |
Total Assets | 888,330 |  |
Capital Expenditures | 1,536 |  |
Non-same store | Non-same store/other |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 12,948 | 4,903 |
Operating expenses | 6,092 | 2,860 |
NOI | 6,856 | 2,043 |
Total Assets | 665,260 |  |
Capital Expenditures | 7,381 |  |
Other | Non-same store/other |  |  |
Segment Reporting Information [Line Items] |  |  |
Rental income | 1,205 | 11,882 |
Operating expenses | 5,560 | 12,427 |
NOI | (4,355) | $ (545) |
Total Assets | 824,651 |  |
Capital Expenditures | $ 68 |  |

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