Leases Lease Cost (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Sep. 28, 2019	Sep. 28, 2019
Lessee, Lease, Description [Line Items]
Lease Cost	[1]	$ 14.0	$ 32.8
Selling, General and Administrative Expenses [Member]
Lessee, Lease, Description [Line Items]
Operating Lease Cost		3.5	10.2
Variable Lease Cost		0.1	0.4
Cost of Sales [Member]
Lessee, Lease, Description [Line Items]
Operating Lease Cost		9.2	19.0
Variable Lease Cost		$ 1.2	$ 3.2

[1] (A) Includes total short-term lease cost which is immaterial.