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Stock-based Compensation (Vornado Stock Options, Performance AO LTIP Units, AO LTIP Units & LTIP Units) (Narrative) (Details) - USD ($)
12 Months Ended
Jun. 29, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Performance AO LTIP Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grant-date fair value     $ 48,710,000  
Vornado stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance vesting period   4 years    
Awards expiration term   10 years    
Proceeds from stock options exercised   $ 0 0 $ 7,000
Exercises in period, intrinsic value       842
Aggregate intrinsic value   132,527    
Options exercisable   $ 132,527    
Performance AO LTIP Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards expiration term   10 years    
Aggregate intrinsic value   $ 360,416,000    
Performance AO LTIP Units | 2023 Omnibus Share Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregate issuance (in shares) 14,368,750      
Share price (in dollars per share) $ 16.87      
Increase in share price (as a percent)   75.00%    
Performance AO LTIP Units | 2023 Omnibus Share Plan | Fourth Anniversary Of The Grant Date | Performance condition 2        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting rights (as a percent) 80.00%      
2023 Performance AO LTIP Units | 2023 Omnibus Share Plan | Third Anniversary Of The Grant Date | Performance condition 1        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting rights (as a percent) 20.00%      
AO LTIP Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards expiration term   10 years    
Threshold level (as a percent)   100.00%    
Special allocation (as a percent)   10.00%    
Special distribution (as a percent)   10.00%    
Options exercisable   $ 592,728    
LTIP Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grant-date fair value   2,104,000 45,468,000 15,446,000
Distributions, share-based compensation   2,160,000 1,302,000 2,197,000
Vested in period, fair value   $ 10,707,000 $ 37,198,000 $ 25,158,000
LTIP Units | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance vesting period   3 years    
LTIP Units | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance vesting period   4 years