Debt - Schedule of 2019 1 Debt (Details) - USD ($)	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Nov. 30, 2021
Debt
Principal amount	$ 1,637,500,000	$ 1,818,200,000
2019-1 Notes
Debt
Principal amount	352,500	$ 352,500	$ 410,000,000
Class A1R senior secured floating rate notes
Debt
Principal amount	$ 282,500		$ 282,500,000
Spread rate (as a percent)	1.50%
Interest rate (as a percent)	4.01%		1.50%
Class A2R senior secured floating rate notes
Debt
Principal amount	$ 55,000		$ 55,000,000
Spread rate (as a percent)	2.00%
Interest rate (as a percent)	4.51%		2.00%
Class BR senior deferrable floating rate notes
Debt
Principal amount	$ 15,000		$ 47,500,000
Spread rate (as a percent)	2.60%
Interest rate (as a percent)	5.11%		2.60%
2019-1 CLO Reset Notes
Debt
Principal amount	$ 454,750
Membership interests	$ 102,250