Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Oct. 31, 2023
Loss Contingencies [Line Items]
Contingent liability under purchase agreements for future chassis inventory purchases	$ 18.9		$ 8.8
Repurchase agreement	2 years
Represents the gross value of all vehicles under repurchase agreements	$ 415.5		490.1
Aggregate amount of indebtedness which the Company is a party to through guarantee agreements	$ 24.7		27.2
Guarantee agreement	5 years
Loss on litigation settlements		$ 11.5
Additional loss on litigation settlements		$ 2.0
Maximum [Member]
Loss Contingencies [Line Items]
Contingent liability under purchase agreements for future chassis inventory purchases	$ 25.5		25.9
Estimated loss exposure under contract	$ 4.2		$ 5.4