Restructuring Reserves (Details) $ in Millions	6 Months Ended
	Jul. 01, 2017 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 72.3
Costs incurred	43.6	[1]
Reserves reversed	(4.2)	[2]
Payments	(47.9)
Currency translation	1.4
Ending balance	65.2
Restructuring and Related Costs, Other Costs (Income), Net	7.0
Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	38.2
Costs incurred	28.2
Reserves reversed	(3.4)	[2]
Payments	(34.3)
Currency translation	0.6
Ending balance	$ 29.3
Restructuring Reserve, Expected Final Year of Payments	2017
Abandonment of Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	$ 31.9
Costs incurred	9.6
Payments	(8.3)
Currency translation	0.1
Ending balance	$ 33.3
Restructuring Reserve, Expected Final Year of Payments	2027
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	$ 2.2	[3]
Costs incurred	5.8	[3]
Reserves reversed	(0.8)	[2],[3]
Payments	(5.3)	[3]
Currency translation	0.7	[3]
Ending balance	$ 2.6	[3]
Restructuring Reserve, Expected Final Year of Payments	2017

[1] Excludes $7 million of charges, net, primarily associated with litigation-related matters and the settlement of retirement plans.

[2] Represents reductions in cost of plans.

[3] Other includes relocation and moving expenses associated with facility consolidations, as well as employee retention costs which are accrued ratably over the period through which employees must work to qualify for a payment.