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Fair Value Measurements - Additional Information (Detail) (Fixed Rate Senior Notes, USD $)
In Billions, unless otherwise specified
Jun. 16, 2013
Dec. 30, 2012
Fixed Rate Senior Notes
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Principal amount of outstanding debt $ 1.55 $ 1.56
Fair value of debt outstanding $ 1.70 $ 1.73