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Balance Sheet Information - Supplemental Information on Balance Sheets (Detail) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Inventories:    
Raw materials and supplies $ 267.0 $ 227.4
Work in process 75.5 66.4
Finished products 399.4 385.1
Total inventories 741.9 678.9
Property, plant and equipment, gross 1,945.5 1,911.7
Less: accumulated depreciation 1,140.6 1,098.3
Property, plant and equipment, net $ 804.9 $ 813.4