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Pension and Other Postretirement Benefit Plans - Narrative (Details) - Pension - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Employer's contribution towards defined benefit plan			$ 9.0
Minimum
Defined Benefit Plan Disclosure [Line Items]
Estimated employer's contribution towards defined benefit plan in current year	$ 10.0		10.0
Maximum
Defined Benefit Plan Disclosure [Line Items]
Estimated employer's contribution towards defined benefit plan in current year	15.0		15.0
Foreign
Defined Benefit Plan Disclosure [Line Items]
Curtailment loss	0.5	$ 0.0	0.5	$ 0.0
Settlement loss	$ 0.0	$ 0.0	$ 0.0	$ 0.8