Summary of Non-Accrual Loans and Finance Leases with Specific Reserve and No Specific Reserve (Details) - Financial Services - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amortized cost basis with a specific reserve	$ 39.9	$ 46.0
Amortized cost basis with no specific reserve	9.1	5.8
Total	49.0	51.8
Dealer | Retail
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amortized cost basis with no specific reserve	0.8	1.1
Total	0.8	1.1
Customer Retail | Fleet
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amortized cost basis with a specific reserve	36.5	40.3
Amortized cost basis with no specific reserve	8.3	4.7
Total	44.8	45.0
Customer Retail | Owner/Operator
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amortized cost basis with a specific reserve	3.4	5.7
Total	$ 3.4	$ 5.7