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Debt Long-term Debt Footnote J (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Aug. 31, 2019
May 31, 2012
Dec. 28, 2019
Dec. 29, 2018
Mar. 31, 2014
Debt Instrument [Line Items]          
Interest expense $ 15   $ 284 $ 287  
Debt repurchase amount     1,000    
Notional amounts of interest rate swaps     $ 6,563 $ 5,085  
3.125% U.S. Dollar Debentures Due 2022          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount   $ 700      
Debt repurchase amount         $ 342
Debt Instrument, Term   10 years      
Debt instrument, stated interest rate   3.125%      
Debt Instrument, Interest Rate, Effective Percentage     3.74%    
Unamortized gain (loss) on termination of interest rate swaps     $ (4)