XML 111 R60.htm IDEA: XBRL DOCUMENT v3.25.2
Investments - Schedule of Investments in NGP (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]    
Total $ 3,001.6 $ 3,292.3
Global Private Equity    
Schedule of Equity Method Investments [Line Items]    
Total 1,523.1 1,818.0
Total investments in NGP | Global Private Equity    
Schedule of Equity Method Investments [Line Items]    
Total 639.0 912.0
Investment in NGP Management | Global Private Equity    
Schedule of Equity Method Investments [Line Items]    
Total 265.7 369.2
Investments in NGP general partners - accrued performance allocations | Global Private Equity    
Schedule of Equity Method Investments [Line Items]    
Total 326.7 489.4
Principal investments in NGP funds | Global Private Equity    
Schedule of Equity Method Investments [Line Items]    
Total $ 46.6 $ 53.4