Stock-based Compensation	9 Months Ended
Stock-based Compensation	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation	Stock-based Compensation Vornado’s 2010 Omnibus Share Plan provides for grants of incentive and non-qualified Vornado stock options, restricted stock, restricted Operating Partnership units and Out-Performance Plan awards to certain of our employees and officers. We account for all equity-based compensation in accordance with ASC 718. Equity-based compensation expense was $5,693,000 and $6,117,000 for the three months ended September 30, 2017 and 2016, respectively, and $27,319,000 and $27,903,000 for the nine months ended September 30, 2017 and 2016, respectively.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.