v3.26.3
SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
USD ($)
investment
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
investment
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
investment
Related Party Transaction [Line Items]          
Distributions from investments $ 179.8 $ 19.1 $ 309.7 $ 36.4  
Equity method investment return of capital 91.8 $ 3.0 132.1 $ 9.5  
PIK distribution income $ 33.0   $ 47.6    
Number of investments held | investment 6   6   4
Affiliated Entity          
Related Party Transaction [Line Items]          
Capital commitments     $ 52.6   $ 47.3