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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 11, 2011
Jun. 12, 2010
Jun. 11, 2011
Jun. 12, 2010
Income Tax And Effective Tax Rate [Abstract]        
Income taxes $ 62 $ 90 $ 153 $ 168
Effective tax rate 16.40% 23.80% 20.70% 24.00%
U.S. Federal Statutory rate     35.00%  
Estimated Impact of Proposed IRS Adjustment on Additional Taxes, for fiscal years examined 700   700  
Estimated Impact of Proposed IRS Adjustment on Additional Interest, for fiscal years examined 160   160  
Estimated Impact of Proposed IRS Adjustment on Additional Taxes, for fiscal years potentially subject to future examination through 2010 320   320  
Estimated Impact of Proposed IRS Adjustment on Additional Interest, for fiscal years potentially subject to future examination through 2010 $ 20   $ 20