v3.26.1
FAIR VALUE OF FINANCIAL INSTRUMENTS - Significant Unobservable Inputs (Details)
$ in Millions
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value $ 29,349.3 [1] $ 29,484.8 [2]
Level 3    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 28,687.0 28,692.0
Level 3 | Yield analysis | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 17,089.0 17,584.0
Level 3 | Yield analysis | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,019.0 1,063.0
Level 3 | Yield analysis | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,814.0 1,537.0
Level 3 | Yield analysis | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 2,347.0 2,475.0
Level 3 | Yield analysis | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 946.0  
Level 3 | Discounted cash flow analysis | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,154.0 1,117.0
Level 3 | Discounted cash flow analysis | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value 1,897.0 2,434.0
Level 3 | EV market multiple analysis | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Fair Value $ 2,421.0 $ 2,482.0
Level 3 | Market yield | Yield analysis | Minimum | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.060 0.055
Level 3 | Market yield | Yield analysis | Minimum | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.088 0.082
Level 3 | Market yield | Yield analysis | Minimum | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.073 0.070
Level 3 | Market yield | Yield analysis | Minimum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.080 0.070
Level 3 | Market yield | Yield analysis | Minimum | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.102  
Level 3 | Market yield | Yield analysis | Maximum | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.330 0.236
Level 3 | Market yield | Yield analysis | Maximum | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.354 0.253
Level 3 | Market yield | Yield analysis | Maximum | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.221 0.247
Level 3 | Market yield | Yield analysis | Maximum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.373 0.231
Level 3 | Market yield | Yield analysis | Weighted Average | First lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.099 0.095
Level 3 | Market yield | Yield analysis | Weighted Average | Second lien senior secured loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.170 0.137
Level 3 | Market yield | Yield analysis | Weighted Average | Senior subordinated loans    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.118 0.128
Level 3 | Market yield | Yield analysis | Weighted Average | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.160 0.134
Level 3 | Market yield | Yield analysis | Weighted Average | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.102  
Level 3 | Discount rate | Discounted cash flow analysis | Minimum | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.091 0.094
Level 3 | Discount rate | Discounted cash flow analysis | Minimum | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.093 0.093
Level 3 | Discount rate | Discounted cash flow analysis | Maximum | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.125 0.127
Level 3 | Discount rate | Discounted cash flow analysis | Maximum | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.185 0.165
Level 3 | Discount rate | Discounted cash flow analysis | Weighted Average | Subordinated certificates of the SDLP    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.113 0.113
Level 3 | Discount rate | Discounted cash flow analysis | Weighted Average | Ivy Hill Asset Management, L.P.    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 0.113 0.101
Level 3 | EBITDA multiple | EV market multiple analysis | Minimum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 3 3.5
Level 3 | EBITDA multiple | EV market multiple analysis | Minimum | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 3 4.5
Level 3 | EBITDA multiple | EV market multiple analysis | Maximum | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 23 26
Level 3 | EBITDA multiple | EV market multiple analysis | Maximum | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 28 33
Level 3 | EBITDA multiple | EV market multiple analysis | Weighted Average | Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 11.7 13.8
Level 3 | EBITDA multiple | EV market multiple analysis | Weighted Average | Other equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Unobservable Input 13.6 14.2
[1] As of June 30, 2026, the estimated net unrealized loss for federal tax purposes was approximately $0.2 billion based on a tax cost basis of approximately $29.5 billion. As of June 30, 2026, the estimated aggregate gross unrealized loss for federal income tax purposes was approximately $1.5 billion and the estimated aggregate gross unrealized gain for federal income tax purposes was approximately $1.3 billion.     
[2] As of December 31, 2025, the estimated net unrealized gain for federal tax purposes was approximately $300 million based on a tax cost basis of $29.2 billion. As of December 31, 2025, the estimated aggregate gross unrealized gain for federal income tax purposes was approximately $1.3 billion and the estimated aggregate gross unrealized loss for federal income tax purposes was approximately $1.0 billion.