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Real Estate Fund Investments (Narrative) (Details)			1 Months Ended	12 Months Ended
Real Estate Fund Investments (Narrative) (Details)	Dec. 31, 2022 USD ($) investment	May 20, 2022 USD ($)	May 20, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) investment	Dec. 31, 2020 USD ($)	Jun. 09, 2020 USD ($)
Investment Holdings
Real estate fund investments	$ 0			$ 0	$ 7,730,000
Return of capital from real estate fund investments				$ 5,141,000	5,104,000	$ 0
Vornado Capital Partners Real Estate Fund
Investment Holdings
Equity method ownership percentage	25.00%			25.00%
Term of the fund, years				8 years
Investment period for commitments of the Fund, years				3 years
Crowne Plaza Times Square Hotel Joint Venture
Investment Holdings
Debt default, amount							$ 274,355,000
1100 Lincoln Road
Investment Holdings
Return of capital from real estate fund investments		$ 5,672,000
Net (loss) on sale of real estate			$ 54,255,000
Joint Venture \| Crowne Plaza Times Square Hotel Joint Venture
Investment Holdings
Equity method ownership percentage	57.10%			57.10%
Joint Venture \| Crowne Plaza Time Square Hotel \| Crowne Plaza Times Square Hotel Joint Venture
Investment Holdings
Ownership percentage by noncontrolling owners	24.30%			24.30%
Ownership percentage by parent	32.80%			32.80%
Real estate fund investments	$ 0			$ 0
Real estate fund investments
Investment Holdings
Real estate fund investments	$ 0			0	$ 7,730,000
Number of investments held by fund (investment) \| investment	2				3
Fair value below cost	$ 276,390,000			276,390,000
Unfunded commitments of Fund	28,465,000			28,465,000
Real estate fund investments \| Vornado Realty Trust
Investment Holdings
Unfunded commitments of Fund	$ 8,849,000			$ 8,849,000