Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
lease expense [Line Items]
Operating Lease, Right-of-Use Asset	$ 51.1
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 6.2
Operating Lease, Weighted Average Remaining Lease Term	11 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	5.07%
Operating Leases, Future Minimum Payments Due, Next Twelve Months		$ 7.7
Operating Lease, Payments	$ 2.1
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	0.2
Operating Lease, Expense	2.2
Operating Leases, Future Minimum Payments, Due in Two Years		6.7
Operating Leases, Future Minimum Payments, Due in Three Years		6.0
Operating Leases, Future Minimum Payments, Due in Four Years		5.6
Operating Leases, Future Minimum Payments, Due in Five Years		4.7
Operating Leases, Future Minimum Payments, Due Thereafter		30.6
Operating Leases, Future Minimum Payments Due		61.3
Lessee, Operating Lease, Liability, Payments, Due Year Two	7.5
Lessee, Operating Lease, Liability, Payments, Due Year Three	6.7
Lessee, Operating Lease, Liability, Payments, Due Year Four	5.6
Lessee, Operating Lease, Liability, Payments, Due Year Five	5.0
Lessee, Operating Lease, Liability, Payments, Due after Year Five	36.1
Lessee, Operating Lease, Liability, Payments, Due	67.1
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	15.9
Operating Lease, Liability	51.2
Operating Lease, Liability, Current	6.0
Operating Lease, Liability, Noncurrent	45.2
Operating Lease, Right-of-Use Asset	51.1
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 6.2
Operating Lease, Weighted Average Remaining Lease Term	11 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	5.07%
Operating Leases, Future Minimum Payments Due, Next Twelve Months		7.7
Operating Lease, Payments	$ 2.1
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	0.2
Operating Lease, Expense	2.2
Operating Leases, Future Minimum Payments, Due in Two Years		6.7
Operating Leases, Future Minimum Payments, Due in Three Years		6.0
Operating Leases, Future Minimum Payments, Due in Four Years		5.6
Operating Leases, Future Minimum Payments, Due in Five Years		4.7
Operating Leases, Future Minimum Payments, Due Thereafter		30.6
Operating Leases, Future Minimum Payments Due		$ 61.3
Lessee, Operating Lease, Liability, Payments, Due Year Two	7.5
Lessee, Operating Lease, Liability, Payments, Due Year Three	6.7
Lessee, Operating Lease, Liability, Payments, Due Year Four	5.6
Lessee, Operating Lease, Liability, Payments, Due Year Five	5.0
Lessee, Operating Lease, Liability, Payments, Due after Year Five	36.1
Lessee, Operating Lease, Liability, Payments, Due	67.1
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	15.9
Operating Lease, Liability	51.2
Operating Lease, Liability, Current	6.0
Operating Lease, Liability, Noncurrent	45.2
Cost of Sales [Member]
lease expense [Line Items]
Operating Lease, Expense	1.3
Operating Lease, Expense	1.3
Selling, General and Administrative Expenses [Member]
lease expense [Line Items]
Operating Lease, Expense	0.9
Operating Lease, Expense	$ 0.9