v3.26.1
Debt and Foreign Currency Transactions and Translations - Summary Company's outstanding debt obligations (Details) - USD ($)
Mar. 31, 2026
Mar. 06, 2026
Jan. 23, 2026
Dec. 31, 2025
Aug. 12, 2025
Oct. 17, 2024
Oct. 12, 2023
Jun. 07, 2022
Mar. 11, 2022
Debt Instrument [Line Items]                  
Aggregate principal committed $ 15,519,027,000     $ 12,895,768,000          
Outstanding Principal 10,604,488,000     9,514,965,000          
Carrying Value 10,640,632,000     9,585,532,000          
Fair Value 10,611,916,000 [1]     9,574,992,000 [2]          
Unused Portion 4,914,539,000 [3]     3,380,803,000 [4]          
Amount Available 4,888,646,000 [5]     3,357,068,000 [6]          
Deferred Financing Costs (112,891,000)     (99,565,000)          
Total Debt Obligations, net of Deferred Financing Costs and Debt Discount 10,527,741,000     9,485,967,000          
Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 3,828,000,000                
Outstanding Principal 66,461,000                
Carrying Value 66,461,000                
Fair Value [1] 66,461,000                
Unused Portion [3] 3,761,539,000                
Amount Available [5] 3,735,646,000                
Senior Secured Facility                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 200,000,000 $ 3,828,000,000   3,453,000,000 $ 3,453,000,000 $ 2,740,000,000 $ 2,185,000,000 $ 2,085,000,000.000 $ 1,835,000,000
Outstanding Principal       272,197,000          
Carrying Value       272,197,000          
Fair Value [2]       272,197,000          
Unused Portion [4]       3,180,803,000          
Amount Available 3,735,646,000     3,157,068,000 [6]          
Cardinal Funding LLC                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 1,200,000,000     1,200,000,000          
Outstanding Principal 1,100,000,000     1,200,000,000          
Carrying Value 1,100,000,000     1,200,000,000          
Fair Value 1,097,140,000 [1]     1,199,760,000 [2]          
Unused Portion [3] 100,000,000                
Amount Available [5] 100,000,000                
Grouse Funding LLC                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 1,000,000,000     500,000,000          
Outstanding Principal 500,000,000     500,000,000          
Carrying Value 500,000,000     500,000,000          
Fair Value 490,150,000 [1]     492,700,000 [2]          
Unused Portion [3] 500,000,000                
Amount Available [5] 500,000,000                
Mallard Funding LLC                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 900,000,000     900,000,000          
Outstanding Principal 900,000,000     900,000,000          
Carrying Value 900,000,000     900,000,000          
Fair Value 894,150,000 [1]     897,930,000 [2]          
Warbler Funding LLC                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 1,000,000,000     500,000,000          
Outstanding Principal 447,000,000     500,000,000          
Carrying Value 447,000,000     500,000,000          
Fair Value 442,932,000 [1]     500,000,000 [2]          
Unused Portion [3] 553,000,000                
Amount Available [5] 553,000,000                
Toucan Funding LLC                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 600,000,000     600,000,000          
Outstanding Principal 600,000,000     400,000,000          
Carrying Value 600,000,000     400,000,000          
Fair Value 594,840,000 [1]     400,000,000 [2]          
Unused Portion [4]       200,000,000          
Amount Available [6]       200,000,000          
Bald Eagle Funding LLC                  
Debt Instrument [Line Items]                  
Aggregate Principal Committed 500,000,000                
Outstanding Principal 500,000,000                
Carrying Value 500,000,000                
Fair Value [1] 500,000,000                
December 2027 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 82,000,000     82,000,000          
Outstanding Principal 82,000,000     82,000,000          
Carrying Value 82,034,000     82,554,000          
Fair Value 82,034,000 [1]     82,554,000 [2]          
January 2028 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 18,000,000     18,000,000          
Outstanding Principal 18,000,000     18,000,000          
Carrying Value 18,003,000     18,120,000          
Fair Value 18,003,000 [1]     18,120,000 [2]          
September 2026 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 226,000,000     226,000,000          
Outstanding Principal 226,000,000     226,000,000          
Carrying Value 226,508,000     227,180,000          
Fair Value 226,508,000 [1]     227,180,000 [2]          
September 2028 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 325,000,000     325,000,000          
Outstanding Principal 325,000,000     325,000,000          
Carrying Value 327,472,000     330,078,000          
Fair Value 327,472,000 [1]     330,078,000 [2]          
September 2026 Euronotes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 104,027,000     105,768,000          
Outstanding Principal 104,027,000     105,768,000          
Carrying Value 104,494,000     106,770,000          
Fair Value 104,494,000 [1]     106,770,000 [2]          
2029 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 1,000,000,000     1,000,000,000          
Outstanding Principal 1,000,000,000     1,000,000,000          
Carrying Value 1,011,183,000 [7]     1,019,226,000 [8]          
Fair Value 1,011,183,000 [1]     1,019,226,000 [2]          
2031 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 1,000,000,000     1,000,000,000          
Outstanding Principal 1,000,000,000     1,000,000,000          
Carrying Value 1,014,395,000 [7]     1,021,910,000 [8]          
Fair Value 1,014,395,000 [1]     1,021,910,000 [2]          
2032 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 500,000,000     500,000,000          
Outstanding Principal 500,000,000     500,000,000          
Carrying Value 515,928,000 [7]     519,937,000 [8]          
Fair Value 515,928,000 [1]     519,937,000 [2]          
2030 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 500,000,000     500,000,000          
Outstanding Principal 500,000,000     500,000,000          
Carrying Value 499,391,000 [7]     503,170,000 [8]          
Fair Value 499,391,000 [1]     503,170,000 [2]          
2028 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 400,000,000     400,000,000          
Outstanding Principal 400,000,000     400,000,000          
Carrying Value 396,309,000 [7]     398,390,000 [8]          
Fair Value 396,309,000 [1]     398,390,000 [2]          
2031 Notes II                  
Debt Instrument [Line Items]                  
Aggregate principal committed 750,000,000   $ 750,000,000            
Outstanding Principal 750,000,000                
Carrying Value [7] 745,454,000                
Fair Value [1] 745,454,000                
Class A1 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 450,000,000     450,000,000          
Outstanding Principal 450,000,000     450,000,000          
Carrying Value 450,000,000     450,000,000          
Fair Value 450,112,000 [1]     450,407,000 [2]          
2025 Class A-1a Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 215,000,000     215,000,000          
Outstanding Principal 215,000,000     215,000,000          
Carrying Value 215,000,000     215,000,000          
Fair Value 214,742,000 [1]     215,042,000 [2]          
2025 Class A-1a-L1 Loans                  
Debt Instrument [Line Items]                  
Aggregate principal committed 25,000,000     25,000,000          
Outstanding Principal 25,000,000     25,000,000          
Carrying Value 25,000,000     25,000,000          
Fair Value 24,970,000 [1]     25,005,000 [2]          
2025 Class A-1a-L2 Loans                  
Debt Instrument [Line Items]                  
Aggregate principal committed 50,000,000     50,000,000          
Outstanding Principal 50,000,000     50,000,000          
Carrying Value 50,000,000     50,000,000          
Fair Value 49,940,000 [1]     50,010,000 [2]          
2025 Class A-1b Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 10,000,000     10,000,000          
Outstanding Principal 10,000,000     10,000,000          
Carrying Value 10,000,000     10,000,000          
Fair Value 9,985,000 [1]     9,905,000 [2]          
2025 Classs A-1b Loans                  
Debt Instrument [Line Items]                  
Aggregate principal committed 10,000,000     10,000,000          
Outstanding Principal 10,000,000     10,000,000          
Carrying Value 10,000,000     10,000,000          
Fair Value 9,985,000 [1]     9,905,000 [2]          
2025 Class A-2 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 20,000,000     20,000,000          
Outstanding Principal 20,000,000     20,000,000          
Carrying Value 20,000,000     20,000,000          
Fair Value 19,918,000 [1]     19,806,000 [2]          
ADS CLO 2 Class A-1 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 300,000,000     300,000,000          
Outstanding Principal 300,000,000     300,000,000          
Carrying Value 300,000,000     300,000,000          
Fair Value 300,289,000 [1]     298,873,000 [2]          
ADS CLO 2 Class A-2 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 30,000,000     30,000,000          
Outstanding Principal 30,000,000     30,000,000          
Carrying Value 30,000,000     30,000,000          
Fair Value 29,982,000 [1]     29,851,000 [2]          
ADL CLO 2 Class A-1a-L1 Loans                  
Debt Instrument [Line Items]                  
Aggregate principal committed 398,500,000     398,500,000          
Outstanding Principal 398,500,000     398,500,000          
Carrying Value 398,500,000     398,500,000          
Fair Value 398,110,000 [1]     398,705,000 [2]          
ADL CLO 2 Class A-1a-L2 Loans                  
Debt Instrument [Line Items]                  
Aggregate principal committed 7,500,000     7,500,000          
Outstanding Principal 7,500,000     7,500,000          
Carrying Value 7,500,000     7,500,000          
Fair Value 7,493,000 [1]     7,504,000 [2]          
ADL CLO 2 Class A-1b Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 14,000,000     14,000,000          
Outstanding Principal 14,000,000     14,000,000          
Carrying Value 14,000,000     14,000,000          
Fair Value 13,911,000 [1]     14,011,000 [2]          
ADL CLO 2 Class A-1b Loans                  
Debt Instrument [Line Items]                  
Aggregate principal committed 14,000,000     14,000,000          
Outstanding Principal 14,000,000     14,000,000          
Carrying Value 14,000,000     14,000,000          
Fair Value 13,911,000 [1]     14,011,000 [2]          
ADL CLO 2 Class A-2 Notes                  
Debt Instrument [Line Items]                  
Aggregate principal committed 30,000,000     30,000,000          
Outstanding Principal 30,000,000     30,000,000          
Carrying Value 30,000,000     30,000,000          
Fair Value 29,803,000 [1]     30,025,000 [2]          
ADL CLO 2 Class A-2 Loans                  
Debt Instrument [Line Items]                  
Aggregate principal committed 12,000,000     12,000,000          
Outstanding Principal 12,000,000     12,000,000          
Carrying Value 12,000,000     12,000,000          
Fair Value $ 11,921,000 [1]     $ 12,010,000 [2]          
[1] The fair value of these debt obligations would be categorized as Level 3 under ASC 820 as of March 31, 2026. The valuation for the Senior Secured Facility and SPV Financing Facilities is based on a yield analysis and discount rate commensurate with the market yields for similar types of debt.
[2] The fair value of these debt obligations would be categorized as Level 3 under ASC 820 as of December 31, 2025. The valuation for the Senior Secured Facility and SPV Financing Facilities is based on a yield analysis and discount rate commensurate with the market yields for similar types of debt.
[3] The unused portion is the amount upon which commitment fees, if any, are based.
[4] The unused portion is the amount upon which commitment fees, if any, are based.
[5] The amount available reflects any limitations related to each respective credit facility’s borrowing base.
[6] The amount available reflects any limitations related to each respective credit facility’s borrowing base.
[7] Balance is inclusive of original issue discount and/or premium on notes issued below/above par.
[8] Balance is inclusive of original issue discount and/or premium on notes issued below/above par.