Net (Loss) Earnings Per Share (Computation Of Net (Loss) Earnings Per Share) (Details) (USD $) In Millions, except Per Share data	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Oct. 01, 2010		Sep. 30, 2011		Oct. 01, 2010
Net (Loss) Earnings Per Share [Abstract]
Net (loss) earnings	$ (138.2)		$ 56.8		$ (182.4)		$ 166.5
Denominator for basic net (loss) earnings per share - weighted average shares outstanding	365.2		376.3		364.3		382.1
Employee stock options and restricted and performance stock awards			3.5				4.6
Denominator for diluted net (loss) earnings per share - adjusted weighted average shares outstanding and assumed conversions	365.2		379.8		364.3		386.7
Net (loss) earnings per share, basic	$ (0.38)		$ 0.15		$ (0.50)		$ 0.44
Net (loss) earnings per share, diluted	$ (0.38)		$ 0.15		$ (0.50)		$ 0.43
Anti-dilutive employee equity-based awards, excluded (in shares)	22.2	[1]	17.8	[1]	24.2	[1]	18.7	[1]

[1] We exclude certain employee equity-based awards from the weighted average shares outstanding computation because the exercise price was greater than the average market price of the common shares; therefore, the effect would have been anti-dilutive.