Basis of Presentation Adjustments for New Accounting Pronouncement (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Revenue	$ (0.7)	$ (0.4)	$ (1.4)	$ (1.1)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Expenses	(0.7)	(0.4)	(1.4)	(1.1)
Method of Recognition of Defined Benefit Pension and Other Postretirement Benefits [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results		1.9		4.0
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income		1.2		2.6
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share		$ 0.01		$ 0.02
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share		$ 0.01		$ 0.02
Other Comprehensive Income (Loss), Effect of Change in Accounting Principle, Net of Taxes		$ 1.3		$ 2.9