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Other Intangible Assets - Schedule of Amortization Expense (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount $ 295.2 $ 298.9 $ 294.8
Accumulated amortization (237.7) (223.6) $ (181.3)
Product Rights [Member]      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 34.0 34.0  
Accumulated amortization (31.5) (27.7)  
Brand Names [Member]      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 8.9 8.9  
Accumulated amortization (7.2) (6.6)  
Technology [Member]      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 55.1 55.1  
Accumulated amortization (37.7) (35.4)  
Customer and Distributor Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 125.3 128.3  
Accumulated amortization (90.7) (84.0)  
Internally Developed Software [Member]      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 43.1 43.4  
Accumulated amortization (41.8) (40.7)  
Other [Member]      
Finite-Lived Intangible Assets [Line Items]      
Gross carrying amount 28.8 29.2  
Accumulated amortization $ (28.8) $ (29.2)