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Investments in Unconsolidated Joint Ventures - Schedule of Investments in Unconsolidated Joint Ventures Sold (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 30, 2024 | May 31, 2024 | Jan. 31, 2024 | Dec. 31, 2023 | Feb. 28, 2023 | Apr. 30, 2022 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jan. 01, 2024 | Dec. 31, 2021
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Sale |  |  |  |  |  |  |  | $ 208,144,000 | $ (13,368,000) | $ (131,000) |  |
Employee-related liabilities |  |  |  | $ 2,000,000 |  |  |  | 16,800,000 | 2,000,000 | 0 |  |
Carrying value of investment in leasehold interest |  |  |  | 6,102,864,000 |  |  |  | 6,607,741,000 | 6,102,864,000 | 9,198,799,000 |  | $ 7,650,907,000
Carrying Value |  |  |  | $ 346,745,000 |  |  |  | 303,726,000 | 346,745,000 |  |  |
Depreciable real estate reserves and impairments |  |  |  |  |  |  |  | (104,071,000) | (382,374,000) | $ (6,313,000) |  |
625 Madison Avenue |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Depreciable real estate reserves and impairments |  |  |  |  |  |  | $ 5,900,000 |  | $ 23,100,000 |  |  |
Preferred Equity |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Carrying Value |  |  |  |  |  |  |  | 136,720,000 |  |  |  |
Preferred Equity | 625 Madison Avenue |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of investment in leasehold interest |  |  |  |  |  |  |  | 235,400,000 |  |  |  |
Carrying Value |  |  |  |  |  |  |  | $ 214,700,000 |  |  |  |
Average yield (as a percent) |  |  |  |  |  |  |  | 8.86% |  |  |  |
Due from joint ventures | One Vanderbilt Avenue | Wharton Properties |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership Interest Sold | 11.00% |  |  |  |  |  |  |  |  |  |  |
Gross Asset Valuation | $ 4,700,000,000 |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Sale | $ 187,600,000 |  |  |  |  |  |  |  |  |  |  |
Due from joint ventures | 625 Madison Avenue | Wharton Properties |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership Interest Sold |  | 90.43% |  |  |  |  |  |  |  |  |  |
Gross Asset Valuation |  | $ 634,600,000 |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Sale |  | $ (7,600,000) |  |  |  |  |  |  |  |  |  |
Due from joint ventures | 717 Fifth Avenue | Wharton Properties |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership Interest Sold |  |  |  |  |  |  |  |  |  |  | 10.92% |
Gross Asset Valuation |  |  |  |  |  |  |  |  |  |  | $ 963,000,000.0 |
Gain (Loss) on Sale |  |  | $ 26,900,000 |  |  |  |  |  |  |  |  |
Due from joint ventures | 21 East 66th Street | Wharton Properties |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership Interest Sold |  |  |  | 32.28% |  |  |  |  | 32.28% |  |  |
Gross Asset Valuation |  |  |  | $ 40,600,000 |  |  |  |  | $ 40,600,000 |  |  |
Gain (Loss) on Sale |  |  |  | $ (12,700,000) |  |  |  |  |  |  |  |
Due from joint ventures | 121 Greene Street | Wharton Properties |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership Interest Sold |  |  |  |  | 50.00% |  |  |  |  |  |  |
Gross Asset Valuation |  |  |  |  | $ 14,000,000.0 |  |  |  |  |  |  |
Gain (Loss) on Sale |  |  |  |  | $ (300,000) |  |  |  |  |  |  |
Due from joint ventures | Stonehenge Portfolio | Wharton Properties |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross Asset Valuation |  |  |  |  |  | $ 1,000,000.0 |  |  |  |  |  |
Gain (Loss) on Sale |  |  |  |  |  | $ 0 |  |  |  |  |  |

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