v3.26.1
Fair Value of Financial Instruments - Schedule of Roll Forward Level III (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Accretion of discount (amortization of premium) $ 5 $ 9
Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 11,005 12,035
Accretion of discount (amortization of premium) 5 9
Purchases 752 1,720
Paid-in-kind interest 38 64
Sales and repayments (752) (1,352)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 10,549 12,443
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 (444) (55)
Investments | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (169) (18)
Investments | Net change in unrealized appreciation (depreciation)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (330) (15)
Senior Secured Loans—First Lien    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 7,512 7,780
Accretion of discount (amortization of premium) 3 7
Purchases 503 1,267
Paid-in-kind interest 21 36
Sales and repayments (506) (873)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 7,300 8,205
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 (255) (10)
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) (94) (13)
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) (139) 1
Senior Secured Loans—Second Lien    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 538 693
Accretion of discount (amortization of premium) 1 1
Purchases 0 0
Paid-in-kind interest 0 1
Sales and repayments (5) 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 459 683
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 (74) (11)
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) (1) 0
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) (74) (12)
Other Senior Secured Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 52 46
Accretion of discount (amortization of premium) 0 0
Purchases 0 19
Paid-in-kind interest 0 0
Sales and repayments 0 (20)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 33 46
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 (19) 0
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) 0 1
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) (19) 0
Subordinated Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 126 233
Accretion of discount (amortization of premium) 1 0
Purchases 29 7
Paid-in-kind interest 0 4
Sales and repayments (51) (8)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 99 242
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 (5) 9
Subordinated Debt | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) 0 (10)
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) (6) 16
Asset Based Finance    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 1,694 2,102
Accretion of discount (amortization of premium) 0 1
Purchases 160 380
Paid-in-kind interest 4 6
Sales and repayments (170) (334)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 1,660 2,170
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 (28) 1
Asset Based Finance | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) 1 14
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) (29) 1
Equity/Other    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period 1,083 1,181
Accretion of discount (amortization of premium) 0 0
Purchases 60 47
Paid-in-kind interest 13 17
Sales and repayments (20) (117)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Fair value at end of period 998 1,097
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 (63) (44)
Equity/Other | Net realized gain (loss)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Net realized gain (loss) (75) (10)
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) $ (63) $ (21)