Investments in Partially Owned Entities (Fifth Avenue and Times Square JV) (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Jun. 10, 2024	Apr. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jun. 09, 2024
Schedule of Equity Method Investments [Line Items]
Total revenues			$ 1,787,686	$ 1,811,163	$ 1,799,995
Loans payable			5,676,014	5,688,020
Repayments of long-term debt			97,439	148,000	1,251,373
Fee and other income
Schedule of Equity Method Investments [Line Items]
Total revenues			218,880	203,677	192,310
JV | Fee and other income | Fifth Avenue and Times Square JV
Schedule of Equity Method Investments [Line Items]
Total revenues			$ 4,624	4,499	4,571
Fifth Avenue and Times Square JV
Schedule of Equity Method Investments [Line Items]
Equity method ownership percentage			51.50%
Fifth Avenue and Times Square JV | JV
Schedule of Equity Method Investments [Line Items]
Aggregate of preferred equity interests			$ 1,828,000
Transfer threshold			50.00%
Real estate basis difference, carrying amount			$ 803,757
Property management fee agreement percentage of income (as a percent)			2.00%
Development fee (as a percent)			5.00%
Supervisory fee (as a percent)			1.50%
Fifth Avenue and Times Square JV | JV | Fee and other income
Schedule of Equity Method Investments [Line Items]
Property management fee income			$ 4,276	$ 4,587	$ 4,397
Fifth Avenue and Times Square JV | JV | Percentage For First Five Years
Schedule of Equity Method Investments [Line Items]
Stated rate (as a percent)		4.25%
Fifth Avenue and Times Square JV | JV | Percentage After Fifth Anniversary
Schedule of Equity Method Investments [Line Items]
Stated rate (as a percent)		4.75%
Debt term		5 years
Fifth Avenue and Times Square JV | JV | Investors
Schedule of Equity Method Investments [Line Items]
Equity method ownership percentage			48.50%
Equity method effective ownership percentage			47.20%
Fifth Avenue and Times Square JV | Vornado Realty Trust | JV
Schedule of Equity Method Investments [Line Items]
Equity method ownership percentage			51.50%
Equity method effective ownership percentage			51.00%
640 Fifth Avenue | Office And Retail Building | Non-recourse
Schedule of Equity Method Investments [Line Items]
Stated rate (as a percent)	7.47%
Loans payable	$ 400,000
Per annum amortization	7,000
640 Fifth Avenue | Office And Retail Building | Recourse
Schedule of Equity Method Investments [Line Items]
Loans payable						$ 500,000
Repayments of long-term debt	$ 100,000
Basis spread on variable rate	1.11%