Finance Receivables - Schedule of Changes in the Allowance for Finance Credit Losses on Finance Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss
Balance, beginning of period	$ 399,293	$ 393,517	$ 401,183	$ 381,966	$ 381,966
Beginning balance, net			401,183
Provision for credit losses	(301,499)	57,977	(198,427)	175,017
Charge-offs	(49,256)	(65,029)	(188,737)	(207,109)
Recoveries	14,108	13,447	48,627	50,038
Sale of Residual Interest in Securitizations	(75,547)		(75,547)
Balance, end of period		399,912		399,912	401,183
Ending balance, net	(12,901)	399,912	(12,901)	399,912	401,183
Retail
Financing Receivable, Allowance for Credit Loss
Balance, beginning of period	374,828	377,826	378,373	367,037	367,037
Provision for credit losses	(307,162)	55,831	(206,386)	172,109
Charge-offs	(44,555)	(65,029)	(183,395)	(207,109)	(290,006)
Recoveries	14,108	13,447	48,627	50,038
Sale of Residual Interest in Securitizations	(75,547)		(75,547)
Balance, end of period		382,075		382,075	378,373
Ending balance, net	(38,328)		(38,328)
Wholesale
Financing Receivable, Allowance for Credit Loss
Balance, beginning of period	24,465	15,691	22,810	14,929	14,929
Provision for credit losses	5,663	2,146	7,959	2,908
Charge-offs	(4,701)	0	(5,342)	0	(1,462)
Recoveries	0	0	0	0
Sale of Residual Interest in Securitizations	0		0
Balance, end of period		$ 17,837		$ 17,837	$ 22,810
Ending balance, net	$ 25,427		$ 25,427