v3.26.1
Investments - International Senior Loan Program, LLC (Details)
€ in Millions
3 Months Ended 6 Months Ended 129 Months Ended
Jun. 24, 2025
EUR (€)
Sep. 11, 2023
Jun. 30, 2023
USD ($)
Feb. 09, 2022
USD ($)
Feb. 09, 2021
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
May 20, 2024
USD ($)
Dec. 14, 2023
USD ($)
Dec. 30, 2022
USD ($)
Aug. 31, 2022
USD ($)
May 31, 2022
USD ($)
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Investments sold       $ 2,551,200,000   $ 65,200,000 $ 167,800,000              
Maximum commitment amount                   $ 1,500,000,000        
International Senior Loan Program, LLC                            
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Ownership percentage         70.50%           64.00%      
Unfunded capital commitment                       $ 0    
Investments sold           0 0 $ 1,192,700,000            
International Senior Loan Program, LLC | Pantheon                            
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Ownership percentage         29.50%           36.00%      
International Senior Loan Program, LLC                            
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Debt capital contribution         $ 317,100,000                  
Distribution received         190,200,000                  
Subordinated notes           190,700,000 190,700,000 190,700,000 $ 190,700,000          
Equity interests           30,700,000 30,700,000 30,700,000 43,600,000          
Commitments with equity and subordinated note interests           254,300,000 254,300,000 254,300,000 254,300,000          
Debt securities           705,700,000 705,700,000 705,700,000 733,100,000          
Maximum commitment amount     $ 500,000,000   $ 300,000,000                  
Spread rate (as a percent)   246.00%                        
Equity method investments                     $ 5,000,000      
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   us-gaap:SecuredOvernightFinancingRateSofrMember us-gaap:SecuredOvernightFinancingRateSofrMember                      
International Senior Loan Program, LLC | Line of Credit [Member]                            
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Maximum commitment amount           500,000,000 500,000,000 500,000,000            
Spread rate (as a percent)         225.00%                  
Outstanding balance           $ 372,500,000 $ 372,500,000 $ 372,500,000 $ 381,400,000          
Effective interest rate           5.10% 5.10% 5.10% 5.80%          
International Senior Loan Program, LLC | ISLP Credit Facility                            
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Maximum commitment amount | € € 375.0                          
Spread rate (as a percent) 195.00%                          
International Senior Loan Program, LLC | ISLP Credit Facility Tranche B                            
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Maximum commitment amount                         $ 200,000,000 $ 50,000,000
International Senior Loan Program, LLC | Pantheon                            
Investment Company, Nonconsolidated Subsidiary [Line Items]                            
Debt capital contribution         $ 138,300,000                  
Equity Capital Contribution         46,100,000                  
Joint venture investment         $ 50,000,000                  
Commitments with equity and subordinated note interests           $ 149,200,000 $ 149,200,000 $ 149,200,000 $ 149,200,000          
Equity method investments                     $ 45,300,000