Asset-Backed Financing -Schedule of Assets and Liabilities of Variable Interest Entities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Finance receivables
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	$ 2,801,427	$ 3,051,035	$ 2,729,574
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(158,409)	(172,737)	(146,275)
Restricted cash
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	166,092	151,246	142,749
Other assets
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	7,286	7,598	8,598
Total assets
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings
Transfers accounts for as secured borrowings, assets, carrying amount	2,816,396	3,037,142	2,734,646
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	2,258,280	2,459,365	2,235,480
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	2,124,680	2,470,147	2,087,904
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(120,775)	(140,632)	(112,611)
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	598,290	490,766	539,559
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(33,952)	(27,890)	(29,097)
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	120,794	118,310	102,940
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	38,507	28,201	33,878
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	4,856	5,260	6,396
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	2,296	2,104	1,874
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	2,129,555	2,453,085	2,084,629
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	605,141	493,181	546,214
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	1,658,745	1,950,138	1,644,626
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	531,260	431,846	502,521
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	78,457	90,122	102,111
Transfers accounted for as secured borrowings, assets, allowance for credit losses, carrying amount	(3,682)	(4,215)	(4,567)
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	6,791	4,735	5,931
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	134	234	328
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	81,700	90,876	103,803
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	$ 68,275	$ 77,381	$ 88,333