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Balance Sheet Information - Supplemental Information on Balance Sheets (Detail) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Inventories:    
Raw materials and supplies $ 299.3 $ 274.4
Work in process 72.0 72.2
Finished products 367.0 372.0
Total inventories 738.3 718.6
Property, plant and equipment, gross 2,005.7 1,982.5
Less: accumulated depreciation 1,214.0 1,158.3
Property, plant and equipment, net $ 791.7 $ 824.2