Asset-Backed Financing - Additional Information (Details)	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Nov. 30, 2023 CAD ($)	Jun. 30, 2023 CAD ($)	Nov. 30, 2022 USD ($)	Nov. 30, 2022 CAD ($)
Variable Interest Entity
Proceeds from securitization debt	$ 0	$ 547,706,000
Asset Backed Securitization 1 | Consolidated VIEs | Secured Debt | SPE | Asset-backed Securities, Securitized Loans and Receivables
Variable Interest Entity
Proceeds from issuance of secured debt, gross		550,000,000
Proceeds from securitization debt		547,700,000
U.S. Line of Credit | Asset-Backed U.S. Commercial Paper Conduit Facility VIE, Combined Facilities | Consolidated VIEs | Secured Debt
Variable Interest Entity
Line of credit facility, remaining borrowing capacity					$ 300,000,000	$ 300,000,000.0
Long-term line of credit		72,800,000
U.S. Line of Credit | Asset-Backed U.S. Commercial Paper Conduit Facility VIE, Combined Facilities | Unconsolidated VIEs | Secured Debt
Variable Interest Entity
Line of credit, maximum borrowing capacity			$ 1,500,000,000
U.S. Line of Credit | Asset-backed U.S. commercial paper conduit facility | Consolidated VIEs | Secured Debt
Variable Interest Entity
Length of option	5 years
Transfers on finance receivables	$ 334,800,000	0
Not accounted for as a sale, proceeds from new transfers	306,000,000
U.S. Line of Credit | Asset Backed Securitization 1
Variable Interest Entity
Transfers of finance receivables	$ 0	628,500,000
Global credit facility borrowings | Asset-backed Canadian commercial paper conduit facility | Unconsolidated VIEs | Secured Debt
Variable Interest Entity
Line of credit, maximum borrowing capacity				$ 125,000,000
Length of option	5 years
Transfers on finance receivables	$ 34,900,000	$ 0
Not accounted for as a sale, proceeds from new transfers	28,600,000
VIE, maximum loss exposure, amount	$ 15,500,000