v3.26.1
Assets and Liabilities Fair Value Measurements (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Derivative contracts $ 4.7 $ 9.9
Liabilities:    
Derivative contracts 2.7 2.2
Fair Value, Inputs, Level 2 | Fair Value Measurements, Nonrecurring    
Assets:    
Impaired loans, net of specific reserves 29.9 4.1
Used trucks held for sale 11.3 17.0
Fair Value, Inputs, Level 2 | Fair Value, Assets and Liabilities Measured on Recurring Basis    
Assets:    
Derivative contracts 4.7 9.9
Liabilities:    
Derivative contracts $ 2.7 $ 2.2