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Property, Plant and Equipment - Narrative (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Property Plant And Equipment [Abstract]        
Depreciation expense $ 30.2 $ 30.9 $ 85.4 $ 96.5
Building and related land sales, non-refundable deposit received $ 68.3   $ 68.3