Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			9 Months Ended	1 Months Ended	9 Months Ended			1 Months Ended	9 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Oct. 02, 2011 year segment M plan week	Oct. 03, 2010	Dec. 31, 2010	Oct. 02, 2011 Patents year	Apr. 30, 2011 Customer relationships year	Oct. 02, 2011 Customer relationships year	Oct. 02, 2011 Technology year	Oct. 02, 2011 Other year	Apr. 30, 2011 Trade name year	Oct. 02, 2011 Trade name
Intangible assets subject to amortization
Gross Carrying Amount	$ 208.7		$ 208.7			$ 16.7		$ 151.9	$ 19.9	$ 20.2
Accumulated Amortization	(77.4)		(77.4)			(10.4)		(54.0)	(6.8)	(6.2)
Net Carrying Amount	131.3		131.3			6.3		97.9	13.1	14.0
Indefinite-lived intangible assets
Indefinite-lived intangible assets	48.3		48.3
Intangible assets
Gross Carrying Amount	257.0		257.0
Total	179.6		179.6		152.6
Impairment of intangible assets												0.3
Reclassification of intangible assets												2.1
Weighted-average remaining life (in years)			12.0			7.3	10	7.5	14.2	21.9	20
Aggregate amortization expense for amortized intangible assets	4.2	3.6	13.5	10.2
Future amortization expense
Future amortization expense for remainder of 2011			4.8
Future amortization expense, 2012			17.6
Future amortization expense, 2013			16.2
Future amortization expense, 2014			16.2
Future amortization expense, 2015			$ 15.8