v3.26.1
Noncontrolling Interests on the Company's Consolidated Financial Statements - Preferred Unit Activity (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Rollforward Analysis of Preferred Unit Activity          
Issuance of preferred units $ 1,109 $ 1,310 $ 3,087 $ 4,747  
Redemption of preferred units   (15,631)   (15,631)  
SL Green Operating Partnership          
Rollforward Analysis of Preferred Unit Activity          
Issuance of preferred units 1,109 $ 1,310 3,087 4,747  
SL Green Operating Partnership | Preferred stock          
Rollforward Analysis of Preferred Unit Activity          
Balance at beginning of period     168,560 $ 164,210 $ 164,210
Issuance of preferred units     5,800   4,320
Redemption of preferred units     0   0
Dividends paid on preferred units     (3,850)   (6,200)
Accrued dividends on preferred units     3,914   6,230
Balance at end of period $ 174,424   $ 174,424   $ 168,560