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v3.25.2

Organization and Basis of Presentation - Additional Information (Details) $ in Thousands, ft² in Millions | 1 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) ft² building shares | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Organization |  |  |  |
Number of shares to be received on redemption of one unit of limited partnership interests (shares) | shares |  | 1 |  |
Investments in unconsolidated joint ventures |  | $ 2,701,382 |  | $ 2,690,138
Cash consideration |  | 57,123 | $ 325,282 |
Madison Avenue, 625, Transaction 1 |  |  |  |
Organization |  |  |  |
Investments in unconsolidated joint ventures |  | $ 112,100 |  |
Madison Avenue, 625, Transaction 1 | Subsequent Event |  |  |  |
Organization |  |  |  |
Joint venture sold (as a percent) | 0.500 |  |  |
Sale of preferred equity investment | $ 104,900 |  |  |
Madison Avenue, 625, Transaction 2 | Subsequent Event |  |  |  |
Organization |  |  |  |
Sale of preferred equity investment | 10,900 |  |  |
Cash consideration | $ 23,700 |  |  |
Office Building |  |  |  |
Organization |  |  |  |
Number of buildings | building |  | 1 |  |
Retail Site |  |  |  |
Organization |  |  |  |
Number of buildings | building |  | 1 |  |
Managed Office Properties |  |  |  |
Organization |  |  |  |
Approximate square feet | ft² |  | 0.4 |  |
Debt and preferred equity investments including investments held by unconsolidated joint ventures |  | $ 315,700 |  |
Debt and preferred equity investments and other financing receivables included in other balance sheet items |  | 221,900 |  |
SL Green Operating Partnership |  |  |  |
Organization |  |  |  |
Investments in unconsolidated joint ventures |  | 2,701,382 |  | $ 2,690,138
Cash consideration |  | $ 57,123 | $ 325,282 |
Service Corporation |  |  |  |
Organization |  |  |  |
Percentage of ownership in SL Green Management LLC owned by operating partnership (percent) |  | 95.00% |  |
Operating Partnership | SL Green Operating Partnership |  |  |  |
Organization |  |  |  |
Noncontrolling interest in the operating partnership (as a percent) |  | 6.40% |  | 5.97%
SL Green Management | SL Green Management LLC |  |  |  |
Organization |  |  |  |
Percentage of ownership in SL Green Management LLC owned by operating partnership (percent) |  | 100.00% |  |

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