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Debt Long-term Debt Footnote G (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 30, 2016
Dec. 30, 2017
Dec. 31, 2016
Nov. 30, 2011
Debt Instrument [Line Items]        
Notional amounts of interest rate swaps   $ 4,966 $ 4,018  
2.65 U.S. Dollar Notes Due 2023        
Debt Instrument [Line Items]        
Debt Instrument, Face Amount $ 600      
Debt Instrument, Term 7 years      
Debt instrument, stated interest rate 2.65%      
Debt Instrument, Interest Rate, Effective Percentage   2.44%    
Notional amounts of interest rate swaps $ 300      
Fair value adjustment for interest rate swaps   $ 7    
1.875% U.S. Dollar Notes Due 2016        
Debt Instrument [Line Items]        
Debt instrument, stated interest rate       1.875%