Restructuring Activities (Reconciliation Of Expenses By Type) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 2.2	$ 3.6	$ 3.4	$ 7.8
Employee termination expenses
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	(0.1)	2.0	0.1	3.4
Facility related costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.3	1.3	0.5	2.9
Other expenses
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 2.0	$ 0.3	$ 2.8	$ 1.5