Aggregate dividends paid during the period for each share of common stock outstanding.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity.

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The percentage rate used to calculate dividend payments on preferred stock.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer.

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The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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The cash outflow for cost incurred directly with the redemption of an equity security.

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Stockholders' Equity Note, Convertible Shares

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Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended			12 Months Ended
	Jan. 04, 2018	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Common Stock Number Of Shares Par Value And Other Disclosures
Common shares of beneficial interest: outstanding shares		190,535,499			190,535,499	189,983,858
Dividends paid on common shares					$ 479,348	$ 496,490	$ 475,961
Dividends per common share		$ 0.63	$ 0.63	$ 0.63
Preferred Stock, Number of Shares, Par Value and Other Disclosures
Preferred share / unit issuance cost					14,486	0	7,408
Preferred dividends					$ 55,115	$ 64,516	80,137
Class A
Common Stock Number Of Shares Par Value And Other Disclosures
Outstanding Partnership Units held by Third Parties		12,544,477			12,544,477	12,528,899
Preferred Stock, Number of Shares, Par Value and Other Disclosures
Convertible shares					1.9531
Series G & I
Preferred Stock, Number of Shares, Par Value and Other Disclosures
Preferred stock dividend rate	6.625%
Preferred stock, redemption price per share	$ 25.00
Preferred stock, redemption amount	$ 470,000
Preferred share / unit issuance cost					$ 14,486
Vornado Realty L.P.
Common Stock Number Of Shares Par Value And Other Disclosures
Dividends paid on common shares					$ 479,348	$ 496,490	475,961
Outstanding Partnership Units held by Third Parties		12,544,477			12,544,477
Preferred Stock, Number of Shares, Par Value and Other Disclosures
Preferred share / unit issuance cost					$ 14,486	0	7,408
Preferred dividends					$ 55,115	$ 64,516	$ 80,137
Vornado Realty L.P. \| Class A
Common Stock Number Of Shares Par Value And Other Disclosures
Common shares of beneficial interest: outstanding shares		190,535,499			190,535,499
Dividends paid on common shares					$ 479,348
Dividends per common share		$ 0.63	$ 0.63	$ 0.63
Outstanding Partnership Units held by Third Parties		12,544,477			12,544,477	12,528,899
Redeemable Preferred Stock
Preferred Stock, Number of Shares, Par Value and Other Disclosures
Preferred stock, liquidation preference per share		$ 25.00			$ 25.00