Employee Benefit Plans (Components of Net Periodic Benefit Cost for Pension Benefits) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2018	Mar. 31, 2017
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.1	$ 0.2
Interest cost	1.1	1.1
Expected return on plan assets	(2.0)	(2.0)
Amortization of prior service cost	0.0	0.0
Amortization of net loss	0.6	0.6
Net pension expense	(0.2)	(0.1)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	1.0	0.9
Interest cost	0.7	0.7
Expected return on plan assets	(0.8)	(0.7)
Amortization of prior service cost	0.0	0.2
Amortization of net loss	0.4	0.4
Net pension expense	$ 1.3	$ 1.5