Investments in Partially Owned Entities (Fifth Avenue and Times Square JV) (Details) $ in Thousands			12 Months Ended
	Apr. 19, 2024	Jun. 14, 2023 USD ($) extension_option	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Total revenues			$ 1,811,163	$ 1,799,995	$ 1,589,210
Fee and other income
Schedule of Equity Method Investments [Line Items]
Total revenues			203,677	192,310	164,679
Joint Venture | Fee and other income | Fifth Avenue and Times Square JV
Schedule of Equity Method Investments [Line Items]
Total revenues			$ 4,499	4,571	3,993
Fifth Avenue and Times Square JV
Schedule of Equity Method Investments [Line Items]
Ownership interest			51.50%
Fifth Avenue and Times Square JV | Joint Venture
Schedule of Equity Method Investments [Line Items]
Aggregate of preferred equity interests			$ 1,828,000
Real estate basis difference, carrying amount			$ 840,300
Property management fee agreement percentage of income			2.00%
Development fee percent			5.00%
Supervisory fee, percent			1.50%
Loan amount after payment				421,000
Restructured loan amount		$ 355,000
Fifth Avenue and Times Square JV | Joint Venture | Senior unsecured notes
Schedule of Equity Method Investments [Line Items]
Restructured loan amount		$ 325,000
Fifth Avenue and Times Square JV | Joint Venture | Senior unsecured notes | SOFR
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate		2.00%
Fifth Avenue and Times Square JV | Joint Venture | Junior Notes
Schedule of Equity Method Investments [Line Items]
Debt instrument, interest rate, stated percentage		4.00%
Restructured loan amount		$ 30,000
Fifth Avenue and Times Square JV | Joint Venture | Junior Notes | Maturing In June 2025
Schedule of Equity Method Investments [Line Items]
Restructured loan, number of extension options | extension_option		2
Restructured loan, extension option, term		1 year
Fifth Avenue and Times Square JV | Joint Venture | Junior Notes | Maturing in March 2028
Schedule of Equity Method Investments [Line Items]
Restructured loan, number of extension options | extension_option		1
Restructured loan, extension option, term		9 months
Fifth Avenue and Times Square JV | Joint Venture | Fee and other income
Schedule of Equity Method Investments [Line Items]
Property management fee income			$ 4,587	$ 4,397	$ 4,297
Fifth Avenue and Times Square JV | Joint Venture | Percentage For First Five Years
Schedule of Equity Method Investments [Line Items]
Debt instrument, interest rate, stated percentage			4.25%
Fifth Avenue and Times Square JV | Joint Venture | Increase in Percentage After Fifth Anniversary
Schedule of Equity Method Investments [Line Items]
Debt instrument, interest rate, stated percentage			4.75%
Debt term			5 years
Fifth Avenue and Times Square JV | Investors | Joint Venture
Schedule of Equity Method Investments [Line Items]
Ownership interest			48.50%
Equity method investment, effective ownership percentage			47.20%
Fifth Avenue and Times Square JV | Vornado Realty Trust | Joint Venture
Schedule of Equity Method Investments [Line Items]
Ownership interest			51.50%
Equity method investment, effective ownership percentage			51.00%
Fifth Avenue and Times Square JV | Vornado Realty Trust | Joint Venture | Investors | Forecast
Schedule of Equity Method Investments [Line Items]
Transfer threshold	50.00%
Fifth Avenue and Times Square JV | Vornado Realty Trust | Joint Venture | VRLP | Forecast
Schedule of Equity Method Investments [Line Items]
Transfer threshold	50.00%