Cost Reduction Actions - Restructuring Charges and Payments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Cost Reduction Actions
Beginning Balance	$ 40.7
Charges, Net of Reversals	11.0
Cash Payments	(14.1)
Foreign Currency Translation	(0.7)
Ending Balance	36.9
Severance and related costs
Cost Reduction Actions
Charges, Net of Reversals	10.4	$ 4.3
2015/2016 Actions
Cost Reduction Actions
Net restructuring reversals	0.3
2018/2019 Actions | Severance and related costs
Cost Reduction Actions
Beginning Balance	40.7
Charges, Net of Reversals	10.7
Cash Payments	(14.1)
Foreign Currency Translation	(0.7)
Ending Balance	36.6
2018/2019 Actions | Lease cancellation
Cost Reduction Actions
Beginning Balance	0.0
Charges, Net of Reversals	0.3
Ending Balance	$ 0.3