Leases Future Minimum Lease Payments for Operating and Capital Leases (Details) $ in Millions	Dec. 31, 2018 USD ($)
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 9.7
Capital Leases, Future Minimum Payments Due, Next Twelve Months	2.3
Operating Leases, Future Minimum Payments, Due in Two Years	9.3
Capital Leases, Future Minimum Payments Due in Two Years	2.3
Operating Leases, Future Minimum Payments, Due in Three Years	8.8
Capital Leases, Future Minimum Payments Due in Three Years	2.3
Operating Leases, Future Minimum Payments, Due in Four Years	8.1
Capital Leases, Future Minimum Payments Due in Four Years	2.3
Operating Leases, Future Minimum Payments, Due in Five Years	6.1
Capital Leases, Future Minimum Payments Due in Five Years	2.3
Operating Leases, Future Minimum Payments, Due Thereafter	3.8
Capital Leases, Future Minimum Payments Due Thereafter	2.6
Operating Leases, Future Minimum Payments Due	45.8
Capital Leases, Future Minimum Payments Due	14.1
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	(8.8)
Capital Leases, Future Minimum Sublease Rentals	0.0
Operating Leases, Future Minimum Payments, Net Minimum Payments	37.0
Capital Leases, Future Minimum Payments, Net Minimum Payments	14.1
Capital Leases, Future Minimum Payments, Interest Included in Payments	(1.6)
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	$ 12.5