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Leases Operating Lease Commitments Under ASC 840 (Details)
$ in Millions
Sep. 30, 2019
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Operating Leases, Future Minimum Payments Due, Next Twelve Months $ 11.2
Operating Leases, Future Minimum Payments, Due in Two Years 9.9
Operating Leases, Future Minimum Payments, Due in Three Years 7.5
Operating Leases, Future Minimum Payments, Due in Four Years 6.2
Operating Leases, Future Minimum Payments, Due in Five Years 5.8
Operating Leases, Future Minimum Payments, Due Thereafter 2.6
Operating Leases, Future Minimum Payments Due $ 43.2