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Inventories - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]      
Reserve for obsolete, unmarketable and slow moving assets $ 6.7 $ 1.6  
Expense for damaged and lost inventories 6.0 1.9 $ 2.7
Reserves to adjust inventories net realizable value $ 1.4 $ 2.4