v3.26.3
DERIVATIVE INSTRUMENTS - Schedule of Fund’s Interest Rate Swap Agreements (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Open Swap Contract, Identifier [Axis]: Interest rate swap | April 2031 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.55%  
Fund Pays 1.875%  
Notional Amount $ 700,000  
Open Swap Contract, Identifier [Axis]: Interest rate swap | August 2029 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 6.35% 6.35%
Fund Pays 2.208%  
Notional Amount $ 700,000 $ 700,000
Open Swap Contract, Identifier [Axis]: Interest rate swap | February 2030 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.60% 5.60%
Fund Pays 2.302%  
Notional Amount $ 750,000 $ 750,000
Open Swap Contract, Identifier [Axis]: Interest rate swap | January 2029 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 4.85% 4.85%
Fund Pays 1.622%  
Notional Amount $ 600,000 $ 600,000
Open Swap Contract, Identifier [Axis]: Interest rate swap | January 2031 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.15% 5.15%
Fund Pays 1.946%  
Notional Amount $ 500,000 $ 500,000
Open Swap Contract, Identifier [Axis]: Interest rate swap | March 2028 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.70% 5.70%
Fund Pays 1.6485%  
Notional Amount $ 1,000,000 $ 1,000,000
Open Swap Contract, Identifier [Axis]: Interest rate swap | March 2032 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 6.20% 6.20%
Fund Pays 1.829%  
Notional Amount $ 750,000 $ 750,000
Open Swap Contract, Identifier [Axis]: Interest rate swap | September 2028 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.45% 5.45%
Fund Pays 1.7465%  
Notional Amount $ 600,000 $ 600,000
Open Swap Contract, Identifier [Axis]: Interest rate swap | September 2030 Notes    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.80% 5.80%
Fund Pays 2.049%  
Notional Amount $ 500,000 $ 500,000
Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount 6,100,000 5,400,000
March 2028 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 1,000,000 1,000,000
March 2028 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.70%  
Notional Amount $ 1,000,000  
September 2028 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 600,000 600,000
September 2028 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.45%  
Notional Amount $ 600,000  
January 2029 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 600,000 600,000
January 2029 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 4.85%  
Notional Amount $ 600,000  
August 2029 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 700,000 700,000
August 2029 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 6.35%  
Notional Amount $ 700,000  
February 2030 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 750,000 750,000
February 2030 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.60%  
Notional Amount $ 750,000  
September 2030 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 500,000 500,000
September 2030 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.80%  
Notional Amount $ 500,000  
January 2031 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 500,000 500,000
January 2031 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.15%  
Notional Amount $ 500,000  
April 2031 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 700,000  
April 2031 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 5.55%  
Notional Amount $ 700,000  
March 2032 Notes | Interest rate swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional Amount $ 750,000 $ 750,000
March 2032 Notes | Interest rate swaps | Unsecured Debt    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Fund Receives 6.20%  
Notional Amount $ 750,000