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Balance Sheet Information - Supplemental Information on Balance Sheets (Detail) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Inventories:    
Raw materials and supplies $ 258.0 $ 274.4
Work in process 71.9 72.2
Finished products 373.2 372.0
Total inventories 703.1 718.6
Property, plant and equipment, gross 1,971.5 1,982.5
Less: accumulated depreciation 1,163.9 1,158.3
Property, plant and equipment, net $ 807.6 $ 824.2