v3.26.3
Equity and Noncontrolling Interests - Additional Information (Details) - $ / shares
3 Months Ended 9 Months Ended
Jan. 02, 2025
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Jan. 31, 2025
Equity and Noncontrolling Interests              
Common shares issued (in shares) 27,307,734 3,203,113 1,809,977 9,508,060 16,481,881    
Common shares, par value (in dollars per share) $ 0.01            
Preferred stock par value             $ 0.01
Shares repurchased 13,528,238 98,663 12,494 302,620 13,540,732    
Common shares - Class A              
Equity and Noncontrolling Interests              
Common shares issued (in shares)   0 4,987 0 8,336,793    
Common shares, par value (in dollars per share)   $ 0.01   $ 0.01   $ 0.01  
Percentage of aggregate NAV of total repurchases       5.00%      
Shares repurchased   0 0 0 9,348    
Common shares - Class F              
Equity and Noncontrolling Interests              
Common shares issued (in shares)   54,715 107,770 182,178 5,097,512    
Common shares, par value (in dollars per share)   $ 0.01   $ 0.01   0.01  
Percentage of aggregate NAV of total repurchases       5.00%      
Shares repurchased   0 0 0 0    
Common shares - Class I              
Equity and Noncontrolling Interests              
Common shares issued (in shares)   3,060,985 1,697,220 9,179,344 3,005,075    
Common shares, par value (in dollars per share)   $ 0.01   $ 0.01   0.01  
Percentage of aggregate NAV of total repurchases       5.00%      
Shares repurchased   11,250 12,494 160,951 12,494    
Common shares - Class E              
Equity and Noncontrolling Interests              
Common shares issued (in shares)   87,413 0 146,538 42,501    
Common shares, par value (in dollars per share)   $ 0.01   $ 0.01   $ 0.01  
Percentage of aggregate NAV of total repurchases       5.00%      
Shares repurchased   87,413 0 141,669 13,518,890    
Maximum              
Equity and Noncontrolling Interests              
Early repurchase deduction percentage       95.00%      
New Mountain Net Lease Partners, L.P.              
Equity and Noncontrolling Interests              
Percentage of common stock received as contribution 100.00%            
Common shares issued (in shares) 27,307,734            
Number of shares distributed in kind 27,307,734            
REIT contribution value per share $ 20