Assets and Liabilities Fair Value Measurements (Detail) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Assets:
Derivative contracts	$ 2.8	$ 9.9
Liabilities:
Derivative contracts	1.6	2.2
Fair Value, Inputs, Level 2 \| Fair Value Measurements, Nonrecurring
Assets:
Impaired loans, net of specific reserves	38.1	4.1
Used trucks held for sale	16.9	17.0
Fair Value, Inputs, Level 2 \| Fair Value, Assets and Liabilities Measured on Recurring Basis
Assets:
Derivative contracts	2.8	9.9
Liabilities:
Derivative contracts	$ 1.6	$ 2.2

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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