v3.26.1
Condensed Consolidated Schedule of Investments - Derivatives (Parenthetical)
€ in Thousands, £ in Thousands, kr in Thousands, kr in Thousands, kr in Thousands, $ in Thousands, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Jun. 30, 2026
CAD ($)
Jun. 30, 2026
EUR (€)
Jun. 30, 2026
NOK (kr)
Jun. 30, 2026
DKK (kr)
Jun. 30, 2026
GBP (£)
Jun. 30, 2026
SEK (kr)
Dec. 31, 2025
CAD ($)
Dec. 31, 2025
EUR (€)
Dec. 31, 2025
NOK (kr)
Dec. 31, 2025
DKK (kr)
Dec. 31, 2025
GBP (£)
Dec. 31, 2025
SEK (kr)
Open Forward Foreign Currency Contract [Line Items]                            
Notional $ 2,812,208 $ 643,979                        
Notional 566,011 1,678,873                        
Unrealized Appreciation (Depreciation) 583 2,711                        
Investment at cost 13,856,590 14,387,967                        
Investments at fair value $ 13,364,295 $ 14,207,294                        
Investment, Type [Extensible Enumeration] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member] Derivative [Member]
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 1                            
Open Forward Foreign Currency Contract [Line Items]                            
Notional $ 63,803 $ 58,283                        
Notional     $ 90,000           $ 80,000          
Unrealized Appreciation (Depreciation) 207 (255)                        
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 2                            
Open Forward Foreign Currency Contract [Line Items]                            
Notional 74,864 76,983                        
Notional | €       € 65,250           € 65,250        
Unrealized Appreciation (Depreciation) 108 134                        
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 3                            
Open Forward Foreign Currency Contract [Line Items]                            
Notional 2,751 2,626                        
Notional | kr         kr 26,704           kr 26,704      
Unrealized Appreciation (Depreciation) 59 (22)                        
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 4                            
Open Forward Foreign Currency Contract [Line Items]                            
Notional 1,837 1,890                        
Notional | kr           kr 11,958           kr 11,958    
Unrealized Appreciation (Depreciation) 3 3                        
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 5                            
Open Forward Foreign Currency Contract [Line Items]                            
Notional 62,208 62,779                        
Notional | £             £ 47,000           £ 47,000  
Unrealized Appreciation (Depreciation) (102) (399)                        
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A. 6                            
Open Forward Foreign Currency Contract [Line Items]                            
Notional 22,756 20,291                        
Notional | kr               kr 217,760           kr 187,760
Unrealized Appreciation (Depreciation) 206 (146)                        
Foreign Exchange Contract                            
Open Forward Foreign Currency Contract [Line Items]                            
Unrealized Appreciation (Depreciation) 481 (685)                        
Interest Rate Swap                            
Open Forward Foreign Currency Contract [Line Items]                            
Notional 2,750,000 500,000                        
Notional 400,000 1,600,000                        
Investments at fair value (25,573) 20,318                        
Upfront Payments / Receipts 0 0                        
Change in Unrealized Appreciation (Depreciation) $ (45,891) $ 23,487 [1]                        
Interest Rate Swap 1                            
Open Forward Foreign Currency Contract [Line Items]                            
Company Receives 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88% 5.88%
Company Pays 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38% 1.38%
Investment at cost $ 400,000 $ 400,000                        
Investments at fair value 2,462 8,251                        
Upfront Payments / Receipts 0 0                        
Change in Unrealized Appreciation (Depreciation) $ (5,789) $ 4,256 [1]                        
Interest Rate Swap 2                            
Open Forward Foreign Currency Contract [Line Items]                            
Company Receives 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35%
Company Pays 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65% 1.65%
Investment at cost $ 400,000 $ 400,000                        
Investments at fair value (2,704) 2,488                        
Upfront Payments / Receipts 0 0                        
Change in Unrealized Appreciation (Depreciation) $ (5,192) $ 8,343 [1]                        
Interest Rate Swap 3                            
Open Forward Foreign Currency Contract [Line Items]                            
Company Receives 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35% 5.35%
Company Pays 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39% 1.39%
Investment at cost $ 300,000 $ 300,000                        
Investments at fair value (471) 3,803                        
Upfront Payments / Receipts 0 0                        
Change in Unrealized Appreciation (Depreciation) $ (4,274) $ 5,112 [1]                        
Interest Rate Swap 4                            
Open Forward Foreign Currency Contract [Line Items]                            
Company Receives 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30% 5.30%
Company Pays 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46% 1.46%
Investment at cost $ 500,000 $ 500,000                        
Investments at fair value (2,523) 7,665                        
Upfront Payments / Receipts 0 0                        
Change in Unrealized Appreciation (Depreciation) $ (10,188) $ 7,665 [1]                        
Interest Rate Swap 5                            
Open Forward Foreign Currency Contract [Line Items]                            
Company Receives 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13% 5.13%
Company Pays 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66% 1.66%
Investment at cost $ 500,000 $ 500,000                        
Investments at fair value (11,218) (1,889)                        
Upfront Payments / Receipts 0 0                        
Change in Unrealized Appreciation (Depreciation) $ (9,329) $ (1,889) [1]                        
Interest Rate Swap 6                            
Open Forward Foreign Currency Contract [Line Items]                            
Company Receives 5.25%   5.25% 5.25% 5.25% 5.25% 5.25% 5.25%            
Company Pays 1.93%   1.93% 1.93% 1.93% 1.93% 1.93% 1.93%            
Investment at cost $ 400,000                          
Investments at fair value (8,716)                          
Upfront Payments / Receipts 0                          
Change in Unrealized Appreciation (Depreciation) $ (8,716)                          
Interest Rate Swap 7                            
Open Forward Foreign Currency Contract [Line Items]                            
Company Receives 5.90%   5.90% 5.90% 5.90% 5.90% 5.90% 5.90%            
Company Pays 2.00%   2.00% 2.00% 2.00% 2.00% 2.00% 2.00%            
Investment at cost $ 650,000                          
Investments at fair value (2,403)                          
Upfront Payments / Receipts 0                          
Change in Unrealized Appreciation (Depreciation) $ (2,403)                          
[1] For interest rate swaps designated in qualifying hedge relationships, the change in fair value is recorded in Interest expense in the Condensed Consolidated Statements of Operations.