Asset Impairment and Other Charges, Net (Exit Activity and Other Reserves) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 26, 2014
Restructuring Reserve [Roll Forward]
Exit activity and other reserve balance at beginning of period	$ 3.8
Impact to Earnings	4.4
Cash Paid	(5.6)
Restructuring Reserve, Translation Adjustment	0
Exit activity and other reserve balance at end of period	2.6
Facility Closing [Member] | UNITED KINGDOM [Member]
Restructuring Reserve [Roll Forward]
Exit activity and other reserve balance at end of period	2.3
Facility Closing [Member] | GERMANY
Restructuring Reserve [Roll Forward]
Exit activity and other reserve balance at end of period	0.2
Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Exit activity and other reserve balance at beginning of period	1.0
Impact to Earnings	2.7
Cash Paid	(3.6)
Restructuring Reserve, Translation Adjustment	0
Exit activity and other reserve balance at end of period	0.1
Termination Benefits [Member] | FRANCE
Restructuring Reserve [Roll Forward]
Exit activity and other reserve balance at end of period	0.1
Contract Termination and Other Exit Activity Charges [Member]
Restructuring Reserve [Roll Forward]
Exit activity and other reserve balance at beginning of period	2.8
Impact to Earnings	1.7
Cash Paid	(2.0)
Restructuring Reserve, Translation Adjustment	0
Exit activity and other reserve balance at end of period	$ 2.5