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Fair Value Measurements (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jul. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022
Fair Value of Financial Instruments |  |  |  |
Marketable securities available-for-sale |  |  | $ 9,591 | $ 11,240
Interest rate cap and swap agreements (included in Other assets) |  |  | 33,456 | 57,660
Ownership percentage deconsolidated | 50.10% | 51.00% |  |
Investment fair value adjustment | $ 17,000 | $ 206,800 | 17,000 |
Debt and preferred equity investments |  |  | 346,745 | 623,280
Variable Rate Debt |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Estimated fair value of debt and preferred equity investments, low end of range |  |  | 110,000 |
Estimated fair value of debt and preferred equity investments, high end of range |  |  | 108,600 |
220 East 42nd Street |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Ownership interest disposed | 49.90% |  |  |
Carrying Value |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Fixed rate debt |  |  | 3,237,386 | 5,015,814
Variable rate debt |  |  | 270,000 | 520,148
Total debt |  |  | 3,507,386 | 5,535,962
Fair Value |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Total debt |  |  | 3,453,125 | 5,304,360
Estimated fair value of debt and preferred equity investments, low end of range |  |  | 300,000 | 600,000
Estimated fair value of debt and preferred equity investments, high end of range |  |  |  | 600,000
Level 1 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate cap and swap agreements (included in Other assets) |  |  | 0 | 0
Level 2 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate cap and swap agreements (included in Other assets) |  |  | 33,456 | 57,660
Level 3 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Marketable securities available-for-sale |  |  | 0 | 0
Interest rate cap and swap agreements (included in Other assets) |  |  | 0 | 0
Level 3 | Carrying Value |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Debt and preferred equity investments |  |  | 346,745 | 623,280
Level 3 | Fair Value |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Fixed rate debt |  |  | 3,184,338 | 4,784,691
Variable rate debt |  |  | 268,787 | 519,669
Equity marketable securities | Level 1 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Marketable securities available-for-sale |  |  | 0 | 0
Mortgage-backed securities |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Marketable securities available-for-sale |  |  | 9,591 | 11,240
Mortgage-backed securities | Level 2 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Marketable securities available-for-sale |  |  | 9,591 | 11,240
Accrued Interest Payable and Other |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate cap and swap agreements (included in accrued interest payable and other liabilities) |  |  | 17,108 | 10,142
Accrued Interest Payable and Other | Level 1 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate cap and swap agreements (included in accrued interest payable and other liabilities) |  |  | 0 | 0
Accrued Interest Payable and Other | Level 2 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate cap and swap agreements (included in accrued interest payable and other liabilities) |  |  | 17,108 | 10,142
Accrued Interest Payable and Other | Level 3 |  |  |  |
Fair Value of Financial Instruments |  |  |  |
Interest rate cap and swap agreements (included in accrued interest payable and other liabilities) |  |  | $ 0 | $ 0

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