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Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Intangible Assets by Major Class [Line Items]    
Weighted-average useful life (years) 18 years  
Accumulated amortization $ (107.1)  
Total other intangible assets, net 671.6 $ 609.2
Total other intangible assets, net $ 564.5 $ 512.0
Amortizable - dealer/customer related    
Intangible Assets by Major Class [Line Items]    
Weighted-average useful life (years) 19 years 19 years
Cost $ 341.2 $ 341.2
Accumulated amortization (106.1) (97.2)
Net $ 235.1 244.0
Amortizable - developed technology    
Intangible Assets by Major Class [Line Items]    
Weighted-average useful life (years) 10 years  
Cost $ 62.7  
Accumulated amortization (1.0)  
Net 61.7  
Non-amortizable - brand/trade names    
Intangible Assets by Major Class [Line Items]    
Non-amortizable—brand/trade names $ 267.7 $ 268.0