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Supplemental balance sheet information - Summary of Property, Plant and Equipment, Net (Detail) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Property, plant and equipment, at cost $ 2,196.5 $ 2,190.3
Less: accumulated depreciation (1,095.0) (1,037.9)
Property, plant and equipment, net $ 1,101.5 $ 1,152.4