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Dispositions (Details) - FPD
$ in Millions
3 Months Ended 12 Months Ended
Aug. 09, 2018
site
Sep. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Schedule of Equity Method Investments [Line Items]          
Divestiture of two Locations | site 2        
Pretax impairment charge attributable to product lines     $ 17.4 $ 25.1  
(Loss) gain on sale of businesses   $ (7.7)      
Inventory write-down     7.7    
Asset impairment charges     $ 9.7    
Cash transfer from sale, net   $ 3.7      
Revenues         $ 42.0