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Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Inventory [Line Items]    
Raw materials and work-in-progress $ 305.5 $ 310.4
Finished goods 81.1 83.7
Gross inventories 386.6 394.1
Inventory valuation reserves (28.1) (20.5)
Inventories, net $ 358.5 $ 373.6