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Goodwill and Identifiable Intangible Assets - Gross Carrying Value and Accumulated Amortization by Class of Identifiable Intangible Assets (Detail) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Intangible Assets [Line Items]    
Gross Carrying Amounts, Indefinite-lived tradenames $ 553.1 $ 478.1
Net Book Value, Indefinite-lived tradenames 553.1 478.1
Gross Carrying Amounts, Finite Lived 1,206.8 838.6
Accumulated Amortization, Finite Lived (359.9) (315.9)
Net Book Value, Finite Lived 846.9 522.7
Gross Carrying Amounts, Total identifiable intangibles 1,759.9 1,316.7
Accumulated Amortization, Total identifiable intangibles (359.9) (315.9)
Net Book Value, Total identifiable intangibles 1,400.0 1,000.8
Tradenames [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amounts, Finite Lived 56.8 47.5
Accumulated Amortization, Finite Lived (8.5) (6.8)
Net Book Value, Finite Lived 48.3 40.7
Customer and contractual relationships [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amounts, Finite Lived 1,012.6 662.6
Accumulated Amortization, Finite Lived (273.5) (239.6)
Net Book Value, Finite Lived 739.1 423.0
Patents/proprietary technology [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amounts, Finite Lived 137.4 128.5
Accumulated Amortization, Finite Lived (77.9) (69.5)
Net Book Value, Finite Lived $ 59.5 $ 59.0