Summary of Financial Services Lease Revenues by Lease Type (Detail) - Financial Services - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Entity Wide Information Revenue From External Customer [Line Items]
Finance lease revenues	$ 31.8	$ 45.0	$ 86.7	$ 87.9
Operating lease revenues	186.7	199.7	383.5	403.3
Total lease revenues	$ 218.5	$ 244.7	$ 470.2	$ 491.2