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Balance Sheet Information - Supplemental Information on Balance Sheets (Detail) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Inventories:    
Raw materials and supplies $ 213.5 $ 207.6
Work in process 56.5 55.9
Finished products 311.4 267.6
Total inventories 581.4 531.1
Property, plant and equipment, gross 1,682.2 1,630.7
Less: accumulated depreciation 1,006.6 968.2
Property, plant and equipment, net $ 675.6 $ 662.5