Accounts Payable, Accrued Expenses and Other (Detail) - Truck, Parts and Other - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Accounts Payable and Accrued Liabilities [Line Items]
Accounts payable	$ 1,665.1	$ 1,393.5
Product support liabilities	542.9	475.0
Accrued expenses	808.4	611.5
Right-of-return liabilities	366.4	436.1
Accrued capital expenditures	221.2	242.2
Salaries and wages	351.8	310.4
Other	555.9	462.2
Accounts payable, accrued expenses and other	$ 4,511.7	$ 3,930.9