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