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Leases - Lease Cost Finance And Operating Leases (Parenthetical) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Short-term Lease, Cost $ 0.2 $ 0.6
General and Administrative Expense [Member]    
Variable Lease, Cost 0.5 1.5
Cost of Sales [Member]    
Variable Lease, Cost $ 0.2 $ 0.7