Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	18 years
Total other intangible assets, Gross Carrying Amount	$ 661.7	$ 609.2	$ 604.4
Accumulated Amortization	(119.0)	(97.2)	$ (80.0)
Total other intangible assets, net	$ 542.7	$ 512.0
Amortizable - dealer/customer related
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	19 years	19 years
Gross Carrying Amount	$ 341.2	$ 341.2
Accumulated Amortization	(114.8)	(97.2)
Net	$ 226.4	244.0
Technology-Based Intangible Assets
Intangible Assets by Major Class [Line Items]
Weighted-average useful life (years)	10 years
Gross Carrying Amount	$ 62.7
Accumulated Amortization	4.2
Net	58.5
Non-amortizable - brand/trade names
Intangible Assets by Major Class [Line Items]
Non-amortizable, Net	257.8	268.0
Non-amortizable - brand/trade names	$ 257.8	$ 268.0