Finance Receivables - Aging of Past Due Finance Receivables Including Non-Accrual Status Finance Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due
Financing receivable, gross	$ 7,880,231	$ 7,497,149
Current
Financing Receivable, Past Due
Financing receivable, gross	7,576,903	7,222,144
Total Past Due
Financing Receivable, Past Due
Financing receivable, gross	303,328	275,005
30 To 59 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	168,790	152,565
60 To 89 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	67,058	60,490
Greater than 90 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	67,480	61,950
Retail
Financing Receivable, Past Due
Financing receivable, gross	6,818,699	6,748,201
Retail | Current
Financing Receivable, Past Due
Financing receivable, gross	6,516,342	6,473,462
Retail | Total Past Due
Financing Receivable, Past Due
Financing receivable, gross	302,357	274,739
Retail | 30 To 59 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	168,027	152,343
Retail | 60 To 89 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	67,033	60,446
Retail | Greater than 90 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	67,297	61,950
Wholesale
Financing Receivable, Past Due
Financing receivable, gross	1,061,532	748,948
Wholesale | Current
Financing Receivable, Past Due
Financing receivable, gross	1,060,561	748,682
Wholesale | Total Past Due
Financing Receivable, Past Due
Financing receivable, gross	971	266
Wholesale | 30 To 59 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	763	222
Wholesale | 60 To 89 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	25	44
Wholesale | Greater than 90 Days Past Due
Financing Receivable, Past Due
Financing receivable, gross	$ 183	$ 0