v3.25.2
Fair Value of Financial Instruments - Schedule of Roll Forward Level III (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Accretion of discount (amortization of premium) $ 23 $ 31
Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 12,035 13,073
Accretion of discount (amortization of premium) 23 28
Purchases 3,201 3,428
Paid-in-kind interest 116 63
Sales and repayments (3,090) (3,867)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 11,990 12,561
The amount of total gains or losses for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (309) (121)
Investments | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (153) (306)
Investments | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (142) 142
Senior Secured Loans—First Lien    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 7,780 8,429
Accretion of discount (amortization of premium) 16 25
Purchases 2,367 2,721
Paid-in-kind interest 64 34
Sales and repayments (1,985) (3,007)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 8,039 8,122
The amount of total gains or losses for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (200) (35)
Senior Secured Loans—First Lien | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (62) (125)
Senior Secured Loans—First Lien | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (141) 45
Senior Secured Loans—Second Lien    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 693 1,090
Accretion of discount (amortization of premium) 2 2
Purchases 0 51
Paid-in-kind interest 1 1
Sales and repayments (1) (203)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 674 925
The amount of total gains or losses for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (21) (7)
Senior Secured Loans—Second Lien | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) 0 (100)
Senior Secured Loans—Second Lien | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (21) 84
Other Senior Secured Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 46 21
Accretion of discount (amortization of premium) 0 0
Purchases 19 24
Paid-in-kind interest 1 1
Sales and repayments (36) 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 26 43
The amount of total gains or losses for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date 0 (3)
Other Senior Secured Debt | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (7) (2)
Other Senior Secured Debt | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) 3 (1)
Subordinated Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 233 322
Accretion of discount (amortization of premium) 1 0
Purchases 72 27
Paid-in-kind interest 5 15
Sales and repayments (76) 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 225 360
The amount of total gains or losses for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (8) (3)
Subordinated Debt | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (9) 0
Subordinated Debt | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (1) (4)
Asset Based Finance    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 2,102 2,077
Accretion of discount (amortization of premium) 1 1
Purchases 550 547
Paid-in-kind interest 9 5
Sales and repayments (691) (619)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 1,996 2,025
The amount of total gains or losses for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date 12 8
Asset Based Finance | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) 14 (63)
Asset Based Finance | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) 11 77
Equity/Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 1,181 1,134
Accretion of discount (amortization of premium) 3 0
Purchases 193 58
Paid-in-kind interest 36 7
Sales and repayments (301) (38)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 1,030 1,086
The amount of total gains or losses for the period included in changes in net assets attributable to the change in unrealized gains or losses relating to investments still held at the reporting date (92) (81)
Equity/Other | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (89) (16)
Equity/Other | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) $ 7 $ (59)