Interest Income Recognized on Cash Basis for Finance Receivables that are on Non-accrual Status (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Interest income recognized on cash basis for finance receivables that are on non-accrual status	$ 0.6	$ 0.1	$ 1.1	$ 0.3
Fleet
Financing Receivable, Recorded Investment, Past Due [Line Items]
Interest income recognized on cash basis for finance receivables that are on non-accrual status	$ 0.6	$ 0.1	1.0	0.2
Owner/Oparator
Financing Receivable, Recorded Investment, Past Due [Line Items]
Interest income recognized on cash basis for finance receivables that are on non-accrual status			$ 0.1	$ 0.1