Equipment on Operating Leases for Truck and Other Segment and for Financial Services Segment (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property Subject to or Available for Operating Lease [Line Items]
Total	$ 2,803.3	$ 3,188.9	$ 3,584.7
Truck, Parts and Other
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases	251.7	400.9
Less allowance for depreciation	(60.9)	(98.5)
Total	190.8	302.4
Financial Services
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases	3,974.8	4,285.6
Less allowance for depreciation	(1,362.3)	(1,399.1)
Total	$ 2,612.5	$ 2,886.5