Finance Receivables - Finance Receivables, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	$ 6,911,300	$ 6,833,944	$ 7,572,947	$ 7,411,816	$ 7,157,557
Allowance for credit losses	(339,379)	(390,936)	(198,581)	(189,885)	(192,471)
Total allowance for credit losses	6,571,921	6,443,008	7,374,366	7,221,931	6,965,086
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	6,493,519	6,344,195	6,416,428	6,328,201	6,140,600
Allowance for credit losses	(326,320)	(371,738)	(188,501)	(182,098)
Retail | United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	6,303,293	6,128,269	6,180,236	6,103,378	5,901,002
Retail | Canada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	190,226	215,926	236,192	224,823	239,598
Wholesale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	417,781	489,749	1,156,519	1,083,615	1,016,957
Allowance for credit losses	(13,059)	(19,198)	(10,080)	(7,787)
Wholesale | United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	400,160	459,495	1,067,880	1,007,956	939,621
Wholesale | Canada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	$ 17,621	$ 30,254	$ 88,639	$ 75,659	$ 77,336