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Investments - Accrued Performance Fees (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Carlyle Partners VII, L.P. | Revenue Benchmark | Customer concentration risk    
Segment Reporting Information [Line Items]    
Percentage of accrued performance fees related to certain Corporate Private Equity funds (percent) 17.00% 20.00%