Consolidated Balance Sheets (Parentheticals) (VNO) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Deferred leasing costs, accumulated amortization (in US dollars)	$ 211,775	$ 196,972
Identified intangible assets, accumulated amortization (in US dollars)	$ 97,186	$ 93,113
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Preferred stock, par value per share (in dollars per share)	$ 0	$ 0
Preferred shares of beneficial interest: authorized shares	110,000,000	110,000,000
Preferred shares of beneficial interest: issued shares	48,792,902	48,793,402
Preferred shares of beneficial interest: outstanding shares	48,792,902	48,793,402
Common shares of beneficial interest: par value per share (in dollars per share)	$ 0.04	$ 0.04
Common shares of beneficial interest: authorized shares	250,000,000	250,000,000
Common shares of beneficial interest: issued shares	191,723,608	191,354,679
Common shares of beneficial interest: outstanding shares	191,723,608	191,354,679
Class A
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Outstanding Partnership Units held by Third Parties	14,033,438	13,583,607
Class A | Vornado Realty L.P.
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Outstanding Partnership Units held by Third Parties	14,033,438	13,583,607
Common shares of beneficial interest: outstanding shares	191,723,608
Series D Cumulative Redeemable Preferred Unit
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Outstanding Partnership Units held by Third Parties	141,400	141,401
Series D Cumulative Redeemable Preferred Unit | Vornado Realty L.P.
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Outstanding Partnership Units held by Third Parties	141,400	141,401