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Stock Compensation Cash used to settle equity instruments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Total cash received from option exercises and similar instruments $ 97 $ 368 $ 261
Excess Tax Benefit from Share-based Compensation, Operating Activities $ 4 $ 36  
Excess Tax Benefit from Share-based Compensation, Financing Activities     $ 14