Leases - Operating Lease Expenses (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Lease cost	$ 10.3
Cost of sales
Lessee, Lease, Description [Line Items]
Lease cost	2.7
Selling and administrative expenses
Lessee, Lease, Description [Line Items]
Lease cost	$ 7.6