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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Mar. 30, 2013
Income Tax Disclosure [Abstract]    
Unrecognized tax benefits $ 314 $ 328
Accrued interest and penalties 69 70
Tax Adjustments, Settlements, and Unusual Provisions 46  
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit   $ 100