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Lease, Cost (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Lease, Cost [Abstract]    
Operating Lease, Expense $ 8.1 $ 24.0
Short-term Lease, Expense 0.5 1.3
Variable Lease, Expense 1.9 4.2
Total lease expense $ 10.5 $ 29.5