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Organization (Details) (USD $) | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |
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Dec. 31, 2013 Segment property | Dec. 31, 2012 | Dec. 31, 2013 731 Lexington Avenue [Member] Operating Property [Member] sqft | Dec. 31, 2013 731 Lexington Avenue [Member] Office Space [Member] Operating Property [Member] sqft | Dec. 31, 2013 731 Lexington Avenue [Member] Office Space [Member] Tenant Occupant [Member] Bloomberg [Member] Operating Property [Member] sqft | Dec. 31, 2013 731 Lexington Avenue [Member] Retail Space [Member] Operating Property [Member] sqft | Dec. 31, 2013 731 Lexington Avenue [Member] Retail Space [Member] Tenant Occupant [Member] Container Store [Member] Operating Property [Member] sqft | Dec. 31, 2013 731 Lexington Avenue [Member] Retail Space [Member] Tenant Occupant [Member] Hennes Mauritz [Member] Operating Property [Member] sqft | Dec. 31, 2013 731 Lexington Avenue [Member] Retail Space [Member] Tenant Occupant [Member] Home Depot [Member] Operating Property [Member] sqft | Dec. 31, 2013 731 Lexington Avenue [Member] Residential Space [Member] Operating Property [Member] condounits sqft | Dec. 31, 2013 Rego Park I [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park I [Member] Tenant Occupant [Member] Burlington Coat Factory [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park I [Member] Tenant Occupant [Member] Marshalls [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park I [Member] Tenant Occupant [Member] Bed Bath Beyond [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park I [Member] Tenant Occupant [Member] Sears [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park II [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park II [Member] Tenant Occupant [Member] Toys R Us [Member] Operating Property [Member] | Dec. 31, 2013 Rego Park II [Member] Tenant Occupant [Member] Toys R Us [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park II [Member] Tenant Occupant [Member] Kohls [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park II [Member] Tenant Occupant [Member] Century 21 [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park II [Member] Tenant Occupant [Member] Costco [Member] Anchor [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park II [Member] Apartment Tower [Member] Property Under Development [Member] aptunits sqft | Dec. 31, 2013 Rego Park II [Member] Apartment Tower [Member] Properties to be developed [Member] | Dec. 31, 2013 Rego Park II [Member] Apartment Tower [Member] Maximum [Member] Property Under Development [Member] | Dec. 31, 2001 Paramus [Member] Tenant Occupant [Member] Ikea [Member] acre | Dec. 31, 2013 Paramus [Member] Tenant Occupant [Member] Ikea [Member] Operating Property [Member] acre | Dec. 31, 2013 Flushing [Member] Tenant Occupant [Member] New World Mall Llc [Member] Operating Property [Member] sqft | Dec. 31, 2013 Rego Park III [Member] Property To Be Developed [Member] acre
Operating Properties [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of properties in greater New York City metropolitan area (in property) | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Residential Units Sold (in condominium units) |  |  |  |  |  |  |  |  |  | 105 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of property (in square feet) |  |  | 1,307,000 | 885,000 | 885,000 | 174,000 | 34,000 | 27,000 | 83,000 | 248,000 | 343,000 | 50,000 | 36,000 | 46,000 | 195,000 | 609,000 |  | 47,000 | 133,000 | 135,000 | 145,000 | 250,000 |  |  |  |  | 167,000 |
Area Of Land (in acre) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30.3 | 30.3 |  | 3.2
Related Party Ownership In Tenant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | one-third |  |  |  |  |  |  |  |  |  |  |
Approximate Number Of Apartment Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300 |  |  |  |  |  |
Estimated future funding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 125,000,000 |  |  |  |
Estimated Date Of Completion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2015 |  |  |  |  |
Development and construction in progress | $ 4,924,000 | $ 2,212,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,265,000 |  |  |  |  |  |
Number Of Operating Segments | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The approximate unit of apartment units + References No definition available. + Details
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- Definition Estimated Date Of Completion of a real estate property. + References No definition available. + Details
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- Definition Estimated future funding for proposed development + References No definition available. + Details
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- Definition Number of residential units sold on the property + References No definition available. + Details
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- Details
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- Definition Vornado's Ownership interest in tenants occupying space at the company's properties + References No definition available. + Details
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- Definition Area of land held. + References No definition available. + Details
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- Definition Area of a real estate property. + References No definition available. + Details
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- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.10) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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