v3.26.1
Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Net Investment Income [Line Items]          
Percentage of management fees for CLOs on the total par amount of assets in the fund     1.00%    
Percentage of monthly management fee     1.25%    
Transaction and portfolio advisory fee, rebate offset percentage 100.00%   100.00%    
Transaction and advisory fees $ 108.5 $ 45.8 $ 157.8 $ 122.5  
Incentive Fees          
Performance fees allocation percentage to partnership (percent)     20.00%    
Accrued giveback obligations 92.4   $ 92.4   $ 72.8
Interest Income          
Interest income from investments $ 178.0 $ 142.5 $ 339.8 $ 265.5  
Minimum          
Net Investment Income [Line Items]          
Percentage of management fees earned     1.00%    
Percentage of management fees expiration Or termination     0.50%    
Percentage of management fees from funds of funds during the commitment fee period     0.25%    
Percentage of management fees from funds of funds following the expiration of the weighted average investment period     0.25%    
Percentage of management fees for CLOs on the total par amount of assets in the fund     0.40%    
Percentage of management fee rate for perpetual capital products     0.10%    
Percentage of management fees for business development companies     1.00%    
Incentive Fees          
Management and service fees, incentive rate     10.00% 17.50%  
Percentage of allocation based performance fees related to fund of funds vehicles (percent)     2.00%    
Percent of preferred returns (percent)     7.00%    
Maximum          
Net Investment Income [Line Items]          
Percentage of management fees earned     2.00%    
Percentage of management fees expiration Or termination     2.00%    
Percentage of management fees from funds of funds during the commitment fee period     1.50%    
Percentage of management fees from funds of funds following the expiration of the weighted average investment period     1.50%    
Percentage of management fees for CLOs on the total par amount of assets in the fund     0.50%    
Percentage of management fee rate for perpetual capital products     0.75%    
Percentage of management fees for business development companies     1.50%    
Incentive Fees          
Percentage of allocation based performance fees related to fund of funds vehicles (percent)     12.50%    
Percent of preferred returns (percent)     9.00%