Shareholders' Equity/Partners' Capital Shareholders' Equity/Partners' Capital - Narrative (Details)	Jan. 15, 2020 USD ($) $ / shares
Class of Stock [Line Items]
Dividends payable, amount per share (in usd per share) | $ / shares	$ 1.95
Payments of special dividend, common stock	$ 372,380,000
Vornado Realty L.P.
Class of Stock [Line Items]
Payments of special dividend, common stock	$ (372,380,000)
Class A Unit | Vornado Realty L.P.
Class of Stock [Line Items]
Dividends payable, amount per share (in usd per share) | $ / shares	$ 1.95
Payments of special dividend, common stock	$ 398,292,000