Leases - Operating Lease Expenses (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Lease cost	$ 18.4	$ 28.7
Cost of sales
Lessee, Lease, Description [Line Items]
Lease cost	11.1	13.8
Selling and administrative expenses
Lessee, Lease, Description [Line Items]
Lease cost	$ 7.3	$ 14.9