Asset-Backed Financing -Schedule of Assets and Liabilities of Variable Interest Entities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Finance receivables
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	$ 2,987,135	$ 3,051,035	$ 2,979,558
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(169,986)	(172,737)	(160,667)
Restricted cash
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	168,684	151,246	151,442
Other assets
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	7,045	7,598	6,580
Total assets
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	2,992,878	3,037,142	2,976,913
Asset-backed debt, net
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, associated liabilities, carrying amount	2,388,452	2,459,365	2,448,717
Consolidated VIEs | Finance receivables | Asset-backed securitizations
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	2,397,144	2,470,147	2,404,604
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(137,016)	(140,632)	(130,484)
Consolidated VIEs | Finance receivables | Asset-backed U.S. commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	520,562	490,766	469,244
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(29,682)	(27,890)	(25,439)
Consolidated VIEs | Restricted cash | Asset-backed securitizations
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	129,665	118,310	116,550
Consolidated VIEs | Restricted cash | Asset-backed U.S. commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	32,858	28,201	28,205
Consolidated VIEs | Other assets | Asset-backed securitizations
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	4,412	5,260	4,685
Consolidated VIEs | Other assets | Asset-backed U.S. commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	2,492	2,104	1,753
Consolidated VIEs | Total assets | Asset-backed securitizations
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	2,394,205	2,453,085	2,395,355
Consolidated VIEs | Total assets | Asset-backed U.S. commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	526,230	493,181	473,763
Consolidated VIEs | Asset-backed debt, net | Asset-backed securitizations
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, associated liabilities, carrying amount	1,866,214	1,950,138	1,921,408
Consolidated VIEs | Asset-backed debt, net | Asset-backed U.S. commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, associated liabilities, carrying amount	461,477	431,846	435,930
Unconsolidated VIEs | Finance receivables | Asset-backed Canadian commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	69,429	90,122	105,710
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(3,288)	(4,215)	(4,744)
Unconsolidated VIEs | Restricted cash | Asset-backed Canadian commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	6,161	4,735	6,687
Unconsolidated VIEs | Other assets | Asset-backed Canadian commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	141	234	142
Unconsolidated VIEs | Total assets | Asset-backed Canadian commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	72,443	90,876	107,795
Unconsolidated VIEs | Asset-backed debt, net | Asset-backed Canadian commercial paper conduit facility
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, associated liabilities, carrying amount	$ 60,761	$ 77,381	$ 91,379