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Supplemental Financial Statement Information - Inventories (Detail) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 264.5 $ 240.1
Work in process 133.5 121.6
Finished goods 511.4 614.2
Inventories, net $ 909.4 $ 975.9