Interest Income Recognized on Cash Basis for Finance Receivables that are on Non-Accrual Status (Detail) - Financial Services - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Interest income recognized:
Interest income recognized on a cash basis	$ 4.7	$ 1.1
Customer Retail | Fleet
Interest income recognized:
Interest income recognized on a cash basis	4.6	1.0
Customer Retail | Owner/Operator
Interest income recognized:
Interest income recognized on a cash basis	$ 0.1	$ 0.1