Equipment on Operating Leases - Additional Information (Detail) $ in Millions	Dec. 31, 2021 USD ($)
Property Subject to or Available for Operating Lease [Line Items]
Minimum lease payments receivable for operating leases, in 2022	$ 14.5
Minimum lease payments receivable for operating leases, in 2023	9.3
Minimum lease payments receivable for operating leases, in 2024	5.0
Minimum lease payments receivable for operating leases, in 2025	2.9
Minimum lease payments receivable for operating leases, in 2026	1.6
Minimum lease payments receivable for operating leases, thereafter	3.4
Financial Services
Property Subject to or Available for Operating Lease [Line Items]
Minimum lease payments receivable for operating leases, in 2022	599.7
Minimum lease payments receivable for operating leases, in 2023	397.9
Minimum lease payments receivable for operating leases, in 2024	206.5
Minimum lease payments receivable for operating leases, in 2025	82.5
Minimum lease payments receivable for operating leases, in 2026	22.8
Minimum lease payments receivable for operating leases, thereafter	1.9
Truck, Parts and Other
Property Subject to or Available for Operating Lease [Line Items]
Annual amortization of deferred lease revenues, in 2022	36.2
Annual amortization of deferred lease revenues, in 2023	22.0
Annual amortization of deferred lease revenues, in 2024	12.8
Annual amortization of deferred lease revenues, in 2025	11.1
Annual amortization of deferred lease revenues, thereafter	0.0
Annual maturities of the residual value guarantees, in 2022	113.3
Annual maturities of the residual value guarantees, in 2023	45.6
Annual maturities of the residual value guarantees, in 2024	59.8
Annual maturities of the residual value guarantees, in 2025	14.5
Annual maturities of the residual value guarantees, in 2026	13.8
Annual maturities of the residual value guarantees, thereafter