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Schedule III - Real Estate and Accumulated Depreciation and Amortization - (Parenthetical) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) Property | Dec. 31, 2021 USD ($)
Land, buildings, and leasehold interests: |  |  |
Beginning balance | $ 9,678,127 | $ 8,917,586 | $ 8,534,275
Acquisitions and dollars invested in projects under construction and tenant improvements | 820,238 | 846,331 | 551,287
Dispositions | (94,943) | (77,481) | (146,019)
Impairment losses | (5,990) | (8,309) | (21,957)
Ending balance | 10,397,432 | 9,678,127 | 8,917,586
Accumulated depreciation and amortization: |  |  |
Beginning balance | 1,660,665 | 1,471,393 | 1,319,943
Dispositions | (26,236) | (25,757) | (44,509)
Depreciation and amortization expense | 230,185 | 215,029 | 195,959
Ending balance | 1,864,614 | 1,660,665 | $ 1,471,393
Net investment in direct financing leases | 3,033 | 3,352 |
Real estate, federal income tax basis | 10,277,935 |  |
Mortgages payable, including unamortized premium and net of unamortized debt costs | $ 0 | $ 9,964 |
Mortgages [Member] |  |  |
Accumulated depreciation and amortization: |  |  |
Number Of Properties Securing Mortgages Payable | Property |  | 5 |
Maximum [Member] |  |  |
Accumulated depreciation and amortization: |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation | 18 months |  |
Minimum [Member] |  |  |
Accumulated depreciation and amortization: |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation | 12 months |  |

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