Interest Income Recognized on Cash Basis for Finance Receivables that are on Non-Accrual Status (Detail) - Financial Services - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Interest income recognized on a cash basis on finance loans/leases:
Interest income recognized on a cash basis	$ 2.6	$ 2.8	$ 3.8
Customer Retail | Fleet
Interest income recognized on a cash basis on finance loans/leases:
Interest income recognized on a cash basis	2.2	2.5	3.1
Customer Retail | Owner/Operator
Interest income recognized on a cash basis on finance loans/leases:
Interest income recognized on a cash basis	$ 0.4	0.2	0.5
Dealer | Retail
Interest income recognized on a cash basis on finance loans/leases:
Interest income recognized on a cash basis		$ 0.1	$ 0.2