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Plant Closure Provisions - Movements in Plant Closure and Restructuring Provisions (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Restructuring and Related Activities [Abstract]    
Beginning Balance $ 56.5  
Charge for the period 0.9  
Utilized in the period (0.9)  
Exchange effect (0.2)  
Ending Balance 56.3  
Due within one year (6.2) $ (5.2)
Due after one year $ 50.1 $ 51.3