Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	17 years
Total amortizable	$ 429.6	$ 450.1
Less: Accumulated amortization	(120.3)	(134.0)
Net amortized other intangible assets	309.3	316.1
Total other intangible assets, net	$ 639.1	646.2
Non-compete agreements
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	4 years
Total amortizable	$ 2.6	2.6
Dealer/customer related
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	18 years
Total amortizable	$ 424.1	437.6
Developed technology
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	7 years
Total amortizable	$ 2.9	9.9
Brand/trade names
Intangible Assets by Major Class [Line Items]
Non-amortizable—brand/trade names	$ 329.8	$ 330.1