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Our Significant Accounting Policies (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 26, 2015
Dec. 27, 2014
Dec. 28, 2013
Property, Plant and Equipment [Line Items]      
Research and Development Expense $ 754 $ 718 $ 665
Software amortization 202 208 197
Net capitalized software and development costs 863 944  
Marketing and Advertising Expense $ 3,900 $ 3,900 $ 3,900
Minimum | Software      
Property, Plant and Equipment [Line Items]      
Finite-Lived Intangible Asset, Useful Life 5 years    
Maximum | Software      
Property, Plant and Equipment [Line Items]      
Finite-Lived Intangible Asset, Useful Life 10 years