Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	19 years
Total amortizable	$ 347.6	$ 355.2
Less: Accumulated amortization	(76.9)	(74.8)
Net amortized other intangible assets	270.7	280.4
Total other intangible assets, net	$ 533.2	543.9
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)	19 years
Total amortizable	$ 344.3	349.7
Developed technology
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	7 years
Total amortizable	$ 0.7	2.9
Brand/trade names
Intangible Assets by Major Class [Line Items]
Non-amortizable—brand/trade names	$ 262.5	$ 263.5