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Discontinued Operations (Summarized Activity Of Discontinued Operations) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]    
Net sales   $ 8
Operating earnings   1
Loss on sales of investments and businesses, net   (7)
Loss before income taxes   (2)
Loss from discontinued operations, net of tax $ 0 $ (2)