Shareholders' Equity/Partners' Capital (Narrative) (Details) $ / shares in Units, $ in Thousands	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
Vornado Realty L.P.
Class of Stock [Line Items]
Payments of special dividend, common stock	$ 372,380
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