Subsequent Events	12 Months Ended
Dec. 31, 2013
Subsequent Events [Abstract]
Subsequent Events [Text Block]	25. Subsequent Events 2014 Out-Performance Plan On January 10, 2014, the Compensation Committee of Vornado's Board of Trustees approved the 2014 Outperformance Plan, a multi-year, performance-based equity compensation plan and related form of award agreement (the “2014 OPP”). Under the 2014 OPP, participants have the opportunity to earn compensation payable in the form of units during a three-year performance measurement period, if and only if Vornado outperforms a predetermined total shareholder return (“TSR”) and/or outperforms the market with respect to relative TSR. Awards under Vornado's 2014 OPP may be earned if Vornado (i) achieves a TSR level greater than 7% per annum, or 21% over the three-year performance measurement period (the “Absolute Component”), and/or (ii) achieves a TSR above that of the SNL US REIT Index (the “Index”) over a three-year performance measurement period (the “Relative Component”). To the extent awards would be earned under the Absolute Component but Vornado underperforms the Index, such awards earned under the Absolute Component would be reduced (and potentially fully negated) based on the degree to which Vornado underperforms the Index. In certain circumstances, in the event Vornado outperforms the Index but awards would not otherwise be earned under the Absolute Component, awards may be increased under the Relative Component. To the extent awards would otherwise be earned under the Relative Component but Vornado fails to achieve at least a 6% per annum absolute TSR, such awards earned under the Relative Component would be reduced based on Vornado's absolute TSR, with no awards being earned in the event Vornado's TSR during the applicable measurement period is 0% or negative, irrespective of the degree to which Vornado may outperform the Index. If the designated performance objectives are achieved, OPP Units are also subject to time-based vesting requirements. Awards earned under the 2014 OPP vest 33% in year three, 33% in year four and 34% in year five. Distributions on awards earned accrue during the performance measurement period. In addition, Vornado's executive officers (for the purposes of Section 16 of the Exchange Act) are required to hold any earned OPP awards (or related equity) for at least one year following vesting. 220 Central Park South Development Site On January 31, 2014, we completed a $600,000,000 loan secured by our 220 Central Park South development site. The loan bears interest at LIBOR plus 2.75% and matures in January 2016, with three one-year extension options. Broadway Mall On February 14, 2014, we entered into an agreement to sell the Broadway Mall in Hicksville, Long Island, New York for $94,000,000. The sale will result in net proceeds of approximately $92,000,000 after closing costs. In the fourth quarter of 2013, we recognized a $13,443,000 non-cash impairment loss related to this property, which is included in “impairment losses, acquisition related costs and tenant buy-outs” on our consolidated statements of income. Springfield Mall On March 2, 2014, we entered into an agreement to transfer the Springfield Mall to Pennsylvania Real Estate Investment Trust (NYSE: PEI) upon completion of the redevelopment in exchange for $465,000,000, comprised of $340,000,000 of cash and $125,000,000 of Pennsylvania REIT operating partnership units. The redevelopment is expected to be completed in the fourth quarter of 2014 and the closing will be no later than March 31, 2015.

Subsequent Events

12 Months Ended

Dec. 31, 2013

25. Subsequent Events

2014 Out-Performance Plan

On January 10, 2014, the Compensation Committee of Vornado's Board of Trustees approved the 2014 Outperformance Plan, a multi-year, performance-based equity compensation plan and related form of award agreement (the “2014 OPP”). Under the 2014 OPP, participants have the opportunity to earn compensation payable in the form of units during a three-year performance measurement period, if and only if Vornado outperforms a predetermined total shareholder return (“TSR”) and/or outperforms the market with respect to relative TSR. Awards under Vornado's 2014 OPP may be earned if Vornado (i) achieves a TSR level greater than 7% per annum, or 21% over the three-year performance measurement period (the “Absolute Component”), and/or (ii) achieves a TSR above that of the SNL US REIT Index (the “Index”) over a three-year performance measurement period (the “Relative Component”). To the extent awards would be earned under the Absolute Component but Vornado underperforms the Index, such awards earned under the Absolute Component would be reduced (and potentially fully negated) based on the degree to which Vornado underperforms the Index. In certain circumstances, in the event Vornado outperforms the Index but awards would not otherwise be earned under the Absolute Component, awards may be increased under the Relative Component. To the extent awards would otherwise be earned under the Relative Component but Vornado fails to achieve at least a 6% per annum absolute TSR, such awards earned under the Relative Component would be reduced based on Vornado's absolute TSR, with no awards being earned in the event Vornado's TSR during the applicable measurement period is 0% or negative, irrespective of the degree to which Vornado may outperform the Index. If the designated performance objectives are achieved, OPP Units are also subject to time-based vesting requirements. Awards earned under the 2014 OPP vest 33% in year three, 33% in year four and 34% in year five. Distributions on awards earned accrue during the performance measurement period. In addition, Vornado's executive officers (for the purposes of Section 16 of the Exchange Act) are required to hold any earned OPP awards (or related equity) for at least one year following vesting.

220 Central Park South Development Site

On January 31, 2014, we completed a $600,000,000 loan secured by our 220 Central Park South development site. The loan bears interest at LIBOR plus 2.75% and matures in January 2016, with three one-year extension options.

Broadway Mall

On February 14, 2014, we entered into an agreement to sell the Broadway Mall in Hicksville, Long Island, New York for $94,000,000. The sale will result in net proceeds of approximately $92,000,000 after closing costs. In the fourth quarter of 2013, we recognized a $13,443,000 non-cash impairment loss related to this property, which is included in “impairment losses, acquisition related costs and tenant buy-outs” on our consolidated statements of income.

Springfield Mall

On March 2, 2014, we entered into an agreement to transfer the Springfield Mall to Pennsylvania Real Estate Investment Trust (NYSE: PEI) upon completion of the redevelopment in exchange for $465,000,000, comprised of $340,000,000 of cash and $125,000,000 of Pennsylvania REIT operating partnership units. The redevelopment is expected to be completed in the fourth quarter of 2014 and the closing will be no later than March 31, 2015.