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Investments - Income (Loss) from Principal Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
NGP Management    
Schedule of Investments [Line Items]    
Reduction in accrued performance allocations $ 38.0  
Net investment earnings related to performance allocations (28.5) $ 15.3
Principal investment income (loss) from equity method investments    
Schedule of Investments [Line Items]    
Principal investment income from equity method investments (62.7) 47.1
Global Private Equity | Principal investment income (loss) from equity method investments    
Schedule of Investments [Line Items]    
Principal investment income from equity method investments (95.6) 28.8
Global Credit | Principal investment income (loss) from equity method investments    
Schedule of Investments [Line Items]    
Principal investment income from equity method investments 19.2 11.4
Carlyle AlpInvest | Principal investment income (loss) from equity method investments    
Schedule of Investments [Line Items]    
Principal investment income from equity method investments $ 13.7 $ 6.9