Debt - Schedule of Maturity of Debt Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Total	$ 17,089,524	$ 15,745,192
Less than 1 year	850,000
1-3 Years	3,249,157
3-5 Years	6,885,067
After 5 years	6,105,300
SPV Asset Facility I \| Line of Credit
Debt Instrument [Line Items]
Total	294,200	238,600
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	294,200
SPV Asset Facility II \| Line of Credit
Debt Instrument [Line Items]
Total	1,002,000	932,000
Less than 1 year	0
1-3 Years	0
3-5 Years	1,002,000
After 5 years	0
SPV Asset Facility III \| Line of Credit
Debt Instrument [Line Items]
Total	1,233,500	1,233,500
Less than 1 year	0
1-3 Years	0
3-5 Years	1,233,500
After 5 years	0
SPV Asset Facility IV \| Line of Credit
Debt Instrument [Line Items]
Total	160,100	175,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	160,100
SPV Asset Facility V \| Line of Credit
Debt Instrument [Line Items]
Total	606,250	606,250
Less than 1 year	0
1-3 Years	0
3-5 Years	606,250
After 5 years	0
SPV Asset Facility VI \| Line of Credit
Debt Instrument [Line Items]
Total	677,000	646,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	677,000
SPV Asset Facility VII \| Line of Credit
Debt Instrument [Line Items]
Total	397,000	463,585
Less than 1 year	0
1-3 Years	397,000
3-5 Years	0
After 5 years	0
SPV Asset Facility VIII \| Line of Credit
Debt Instrument [Line Items]
Total	662,500	587,500
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	662,500
SPV Asset Facility IX \| Line of Credit
Debt Instrument [Line Items]
Total	230,000	230,000
Less than 1 year	0
1-3 Years	0
3-5 Years	230,000
After 5 years	0
SPV Asset Facility X \| Line of Credit
Debt Instrument [Line Items]
Total	250,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	250,000
SPV Asset Facility XI \| Line of Credit
Debt Instrument [Line Items]
Total	250,000
SPV Asset Facility XI \| Secured Debt
Debt Instrument [Line Items]
Total	250,000
Less than 1 year	0
1-3 Years	250,000
3-5 Years	0
After 5 years	0
CLO VIII \| Secured Debt
Debt Instrument [Line Items]
Total	375,000	375,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	375,000
CLO XI \| Secured Debt
Debt Instrument [Line Items]
Total	272,000	260,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	272,000
CLO XV \| Secured Debt
Debt Instrument [Line Items]
Total	312,000	312,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	312,000
CLO XVI \| Secured Debt
Debt Instrument [Line Items]
Total	420,000	420,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	420,000
CLO XVII \| Secured Debt
Debt Instrument [Line Items]
Total	325,000	325,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	325,000
CLO XVIII \| Secured Debt
Debt Instrument [Line Items]
Total	260,000	260,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	260,000
CLO XIX \| Secured Debt
Debt Instrument [Line Items]
Total	260,000	260,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	260,000
CLO XXII \| Secured Debt
Debt Instrument [Line Items]
Total	737,500	737,500
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	737,500
CLO XXIV \| Line of Credit
Debt Instrument [Line Items]
Total	600,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	600,000
CLO XXIV \| Secured Debt
Debt Instrument [Line Items]
Total	600,000
September 2026 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	350,000	350,000
Less than 1 year	350,000
1-3 Years	0
3-5 Years	0
After 5 years	0
February 2027 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	500,000	500,000
Less than 1 year	500,000
1-3 Years	0
3-5 Years	0
After 5 years	0
September 2027 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	600,000	600,000
Less than 1 year	0
1-3 Years	600,000
3-5 Years	0
After 5 years	0
AUD 2027 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	302,157	300,771
Less than 1 year	0
1-3 Years	302,157
3-5 Years	0
After 5 years	0
May 2028 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	500,000	500,000
Less than 1 year	0
1-3 Years	500,000
3-5 Years	0
After 5 years	0
June 2028 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	650,000	650,000
Less than 1 year	0
1-3 Years	650,000
3-5 Years	0
After 5 years	0
January 2029 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	550,000	550,000
Less than 1 year	0
1-3 Years	550,000
3-5 Years	0
After 5 years	0
September 2029 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	900,000	900,000
Less than 1 year	0
1-3 Years	0
3-5 Years	900,000
After 5 years	0
March 2030 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	1,000,000	1,000,000
Less than 1 year	0
1-3 Years	0
3-5 Years	1,000,000
After 5 years	0
EUR 2031 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	571,808	587,218
Less than 1 year	0
1-3 Years	0
3-5 Years	571,808
After 5 years	0
March 2031 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	750,000	750,000
Less than 1 year	0
1-3 Years	0
3-5 Years	750,000
After 5 years	0
October 2031 Notes \| Unsecured debt investments
Debt Instrument [Line Items]
Total	500,000
Less than 1 year	0
1-3 Years	0
3-5 Years	0
After 5 years	500,000
Revolving Credit Facility \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Total	591,509	$ 995,268
Less than 1 year	0
1-3 Years	0
3-5 Years	591,509
After 5 years	$ 0