Intangible Assets (Narrative) (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
	Jul. 02, 2011	Jul. 02, 2011
Intangible Assets
Intangible asset amortization expense	$ 9.5	$ 19.2
Estimated amortization expense, 2011		37.8
Estimated amortization expense, 2012		34.6
Estimated amortization expense, 2013		33.0
Estimated amortization expense, 2014		31.9
Estimated amortization expense, 2015		$ 30.5