v3.26.1
Investments in Unconsolidated Joint Ventures - Schedule of Mortgage Notes and Other Loans Payable Collateralized by the Respective Joint Venture Properties and Assignment of Leases (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Total fixed rate debt $ 2,369,708 $ 2,075,222
Total floating rate debt 79,422 79,277
Total fixed rate and floating rate debt 2,449,130 2,154,499
Due from joint ventures    
Debt Instrument [Line Items]    
Total fixed rate debt 12,393,060 10,791,783
Total floating rate debt 500,435 1,687,249
Total fixed rate and floating rate debt 12,893,495 12,479,032
Deferred financing costs, net (104,433) (100,882)
Total joint venture mortgages and other loans payable, net 12,789,062 12,378,150
Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt 5,809,716 5,415,627
Total floating rate debt 177,899 481,571
Total fixed rate and floating rate debt 5,987,615 5,897,198
Deferred financing costs, net (50,118) (50,476)
Total joint venture mortgages and other loans payable, net $ 5,937,497 5,846,722
650 Fifth Avenue | Wharton Properties | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 50.00%  
Interest rate, fixed rate debt (as a percent) 5.45%  
Total fixed rate debt $ 65,000 65,000
Interest rate, floating rate debt (as a percent) 2.25%  
Total floating rate debt $ 210,000 210,000
650 Fifth Avenue | Wharton Properties | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt 32,500 32,500
Total floating rate debt $ 105,000 105,000
115 Spring Street | Private Investor | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 51.00%  
Interest rate, fixed rate debt (as a percent) 5.50%  
Total fixed rate debt $ 66,551 65,550
115 Spring Street | Private Investor | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 33,941 33,431
280 Park Avenue | Vornado Realty Trust | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 50.00%  
Interest rate, fixed rate debt (as a percent) 5.84%  
Total fixed rate debt $ 1,075,000 1,075,000
280 Park Avenue | Vornado Realty Trust | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 537,500 537,500
1515 Broadway | Allianz Real Estate of America | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 56.87%  
Interest rate, fixed rate debt (as a percent) 3.93%  
Total fixed rate debt $ 672,225 718,949
1515 Broadway | Allianz Real Estate of America | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 382,288 408,859
919 Third Avenue | New York State Teacher's Retirement System | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 51.00%  
Interest rate, fixed rate debt (as a percent) 6.15%  
Total fixed rate debt $ 500,000 500,000
919 Third Avenue | New York State Teacher's Retirement System | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 255,000 255,000
245 Park Avenue | U.S. Affiliate of Mori Trust Co., Ltd | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 50.10%  
Interest rate, fixed rate debt (as a percent) 4.30%  
Total fixed rate debt $ 1,768,000 1,768,000
245 Park Avenue | U.S. Affiliate of Mori Trust Co., Ltd | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 885,768 885,768
Worldwide Plaza | RXR Realty / New York REIT | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 25.05%  
Interest rate, fixed rate debt (as a percent) 3.98%  
Total fixed rate debt $ 1,200,000 1,200,000
Worldwide Plaza | RXR Realty / New York REIT | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 300,600 300,600
220 East 42nd Street | A fund managed by Meritz Alternative Investment Management | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 51.00%  
Interest rate, fixed rate debt (as a percent) 6.77%  
Total fixed rate debt $ 496,412 496,412
220 East 42nd Street | A fund managed by Meritz Alternative Investment Management | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 253,170 253,170
100 Park Avenue | Rockpoint Capital | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 50.80%  
Interest rate, fixed rate debt (as a percent) 5.73%  
Total fixed rate debt $ 382,872 382,872
100 Park Avenue | Rockpoint Capital | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 194,499 194,499
15 Beekman | A fund managed by Meritz Alternative Investment Management | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 20.00%  
Interest rate, fixed rate debt (as a percent) 4.83%  
Total fixed rate debt $ 117,000 120,000
15 Beekman | A fund managed by Meritz Alternative Investment Management | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 23,400 24,000
11 Madison Avenue | PGIM Real Estate | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 60.00%  
Interest rate, fixed rate debt (as a percent) 5.62%  
Total fixed rate debt $ 1,400,000 1,400,000
11 Madison Avenue | PGIM Real Estate | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 840,000 840,000
One Madison Avenue | National Pension Service of Korea / Hines Interest LP / International Investor | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 25.50%  
Interest rate, fixed rate debt (as a percent) 5.81%  
Total fixed rate debt $ 1,650,000 0
Total floating rate debt 0 1,163,814
One Madison Avenue | National Pension Service of Korea / Hines Interest LP / International Investor | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt 420,750 0
Total floating rate debt $ 0 296,772
One Vanderbilt Avenue | National Pension Service of Korea / Hines Interest LP / Mori Building Co., Ltd | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 55.01%  
Interest rate, fixed rate debt (as a percent) 2.95%  
Total fixed rate debt $ 3,000,000 3,000,000
One Vanderbilt Avenue | National Pension Service of Korea / Hines Interest LP / Mori Building Co., Ltd | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total fixed rate debt $ 1,650,300 1,650,300
450 Park Avenue | Korean Institutional Investor / Israeli Institutional Investor | Due from joint ventures    
Debt Instrument [Line Items]    
Economic interest (as a percent) 25.10%  
Interest rate, floating rate debt (as a percent) 2.10%  
Total floating rate debt $ 290,435 290,435
450 Park Avenue | Korean Institutional Investor / Israeli Institutional Investor | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total floating rate debt 72,899 72,899
11 West 34th Street | Private Investor / Wharton Properties | Due from joint ventures    
Debt Instrument [Line Items]    
Total floating rate debt 0 23,000
11 West 34th Street | Private Investor / Wharton Properties | Due from joint ventures | Common Stock    
Debt Instrument [Line Items]    
Total floating rate debt $ 0 $ 6,900