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Leases Future Minimum Rental Payments (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Leases [Abstract]  
Operating Leases, Future Minimum Payments Due, Next Twelve Months $ 32.3
Operating Leases, Future Minimum Payments, Due in Two Years 18.7
Operating Leases, Future Minimum Payments, Due in Four Years 9.2
Operating Leases, Future Minimum Payments, Due in Five Years 8.9
Operating Leases, Future Minimum Payments, Due Thereafter 15.2
Operating Leases, Future Minimum Payments Due 96.2
Operating Leases, Future Minimum Payments, Due in Three Years $ 11.9