Restructuring Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Mar. 29, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 1.2	$ 4.2
Expected future restructuring charges	7.5
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.3	4.2
Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.9
Employee termination expenses
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.2	1.4
Expected future restructuring charges	1.5
Facility and other related costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.2	1.6
Expected future restructuring charges	$ 6.0