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Segment Information (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Segment Reporting [Abstract] |  |  |
Number of reportable operating segments defined by geographical regions | segment | 3 |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total property revenues | $ 1,658,264 | $ 1,595,675 | $ 1,431,418
Total net operating income | 1,172,785 | 1,128,406 | 986,182
Management and other fees from affiliates | 11,131 | 11,139 | 9,138
Corporate-level property management expenses | (45,872) | (40,704) | (36,211)
Depreciation and amortization | (548,438) | (539,319) | (520,066)
General and administrative | (63,474) | (56,577) | (51,838)
Expensed acquisition and investment related costs | (595) | (2,132) | (203)
Casualty loss | (433) | 0 | 0
Gain on sale of real estate and land | 59,238 | 94,416 | 142,993
Interest expense | (212,905) | (204,798) | (203,125)
Total return swap income | 3,148 | 7,907 | 10,774
Interest and other income (loss) | 46,259 | (19,040) | 98,744
Equity income from co-investments | 10,561 | 26,030 | 111,721
Tax (expense) benefit on unconsolidated co-investments | (697) | 10,236 | (15,668)
Loss on early retirement of debt, net | 0 | (2) | (19,010)
Gain on remeasurement of co-investment | 0 | 17,423 | 2,260
Net income | 430,708 | 432,985 | 515,691
Assets: |  |  |
Net reportable operating segments - real estate assets | 10,470,292 | 10,814,094 |
Real estate under development | 23,724 | 24,857 |
Co-investments | 1,061,733 | 1,127,491 |
Cash and cash equivalents, including restricted cash | 400,334 | 42,681 |
Marketable securities | 87,795 | 112,743 |
Notes and other receivables | 174,621 | 103,045 |
Operating lease right-of-use assets | 63,757 | 67,239 |
Prepaid expenses and other assets | 79,171 | 80,755 |
Total assets | 12,361,427 | 12,372,905 |
Rental and other property |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total property revenues | 1,658,264 | 1,595,675 | 1,431,418
Management and other fees from affiliates |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Management and other fees from affiliates | 11,131 | 11,139 | 9,138
Operating segments | Southern California |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total net operating income | 483,013 | 459,762 | 398,576
Assets: |  |  |
Net reportable operating segments - real estate assets | 3,802,648 | 3,892,003 |
Operating segments | Southern California | Rental and other property |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total property revenues | 682,116 | 646,252 | 574,129
Operating segments | Northern California |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total net operating income | 464,949 | 445,933 | 401,870
Assets: |  |  |
Net reportable operating segments - real estate assets | 5,242,343 | 5,414,467 |
Operating segments | Northern California | Rental and other property |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total property revenues | 666,836 | 639,306 | 584,034
Operating segments | Seattle Metro |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total net operating income | 201,228 | 191,476 | 160,959
Assets: |  |  |
Net reportable operating segments - real estate assets | 1,333,030 | 1,374,379 |
Operating segments | Seattle Metro | Rental and other property |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total property revenues | 282,092 | 271,248 | 239,839
Other real estate assets |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total net operating income | 23,595 | 31,235 | 24,777
Assets: |  |  |
Net reportable operating segments - real estate assets | 92,271 | 133,245 |
Other real estate assets | Rental and other property |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total property revenues | $ 27,220 | $ 38,869 | $ 33,416

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