Summary of Financial Services Lease Revenues by Lease Type (Detail) - Financial Services - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Entity Wide Information Revenue From External Customer [Line Items]
Finance lease revenues	$ 187.0	$ 189.2	$ 199.7
Operating lease revenues	831.6	802.3	798.2
Total lease revenues	$ 1,018.6	$ 991.5	$ 997.9