v3.26.1
Debt Obligations - Narrative (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended
Oct. 22, 2024
Jun. 30, 2026
Jun. 30, 2026
May 31, 2026
Mar. 31, 2026
May 31, 2024
Apr. 30, 2024
Line of Credit Facility [Line Items]              
Additional note payable available to be issued by consolidated funds   $ 1,480.8 $ 1,480.8        
Lines of credit              
Line of Credit Facility [Line Items]              
Letters of credit outstanding   10.1 10.1        
Lines of credit | Revolving credit facility              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity   $ 300.0 $ 300.0     $ 300.0 $ 225.0
Base interest rate   1.00% 1.00%        
Interest rate in effect   5.79% 5.79%        
Spread on base commitment fee percentage if utilization greater than 50%     0.25%        
Spread on base commitment fee percentage if utilization less than 50%     0.35%        
Lines of credit | Revolving credit facility | New York Federal Reserve Bank Rate              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     0.50%        
Lines of credit | Revolving credit facility | 1 Month Term Secured Overnight Financing Rate (SOFR)              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     1.10%        
Lines of credit | Revolving credit facility | Secured Overnight Financing Rate (SOFR)              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.10%        
Lines of credit | Revolving credit facility | EURIBOR Rate Multiplied By Statutory Reserve Rate              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.00%        
Lines of credit | Revolving credit facility | Sterling Overnight Index Average              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.03%        
Lines of credit | Revolving credit facility | Swiss Average Rate Overnight              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.00%        
Lines of credit | Revolving credit facility | AUD Screen Rate Multiplied By Statutory Reserve Rate              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.20%        
Lines of credit | Credit agreement              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity   $ 10.0 $ 10.0        
Fund Credit Facility | Revolving credit facility              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity   125.0 $ 125.0        
Debt instrument, term     180 days        
Fund Credit Facility | Revolving credit facility | Fed Funds Effective Rate Overnight Index Swap Rate              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.50%        
Fund Credit Facility | Revolving credit facility | GBP Base Rate              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.50%        
Fund Credit Facility | Revolving credit facility | Eurodollar              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.50%        
Series A 5.52% Notes | Senior Notes              
Line of Credit Facility [Line Items]              
Senior notes issued $ 175.0            
Senior notes, interest rate 5.52%            
Minimum amount of prepayment, percentage 0.05            
Redemption price, percentage 100.00%            
Minimum management fees payable     80.00%        
Liquidity Loan Facility | Revolving credit facility              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity         $ 389.7    
Basis spread on variable interest rate     2.70%        
Commitment fee percentage     1.00%        
Sub-Facility | Revolving credit facility              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity   $ 160.0 $ 160.0        
Basis spread on variable interest rate   1.70%          
Interest rate in effect   5.35% 5.35%        
Outstanding borrowings   $ 35.1 $ 35.1        
Commitment fee percentage   0.25%          
Sub-Facility | Lines of credit | Revolving credit facility              
Line of Credit Facility [Line Items]              
Sub-facility termination period   365 days          
Facility D | Lines of credit | Revolving credit facility              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity         $ 37.0    
Interest rate in effect   6.72% 6.72%        
Outstanding borrowings   $ 18.2 $ 18.2        
Commitment fee percentage     0.15%        
Facility D | Lines of credit | Revolving credit facility | Secured Overnight Financing Rate (SOFR)              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     3.10%        
Facility D | Lines of credit | Revolving credit facility | Prime Rate              
Line of Credit Facility [Line Items]              
Basis spread on variable interest rate     2.10%        
Subscription Facility | Revolving credit facility              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity       $ 675.0      
Basis spread on variable interest rate     1.80%        
Interest rate in effect   5.45% 5.45%        
Outstanding borrowings   $ 222.9 $ 222.9        
Commitment fee percentage     0.25%