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Debt Long-term Debt Footnote I (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2020
Aug. 31, 2019
Nov. 30, 2016
Sep. 28, 2019
Jan. 02, 2021
Dec. 28, 2019
Nov. 30, 2011
Debt Instrument [Line Items]              
Notional amounts of interest rate swaps         $ 7,213 $ 6,563  
Debt repurchase amount       $ 1,000      
Interest expense $ 20     $ 16 $ 281 $ 284  
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% 2.65%      
Debt Instrument, Interest Rate, Effective Percentage         3.08%    
Notional amounts of interest rate swaps     $ 300        
Unamortized gain (loss) on termination of interest rate swaps         $ (7)    
Debt repurchase amount   $ 50   $ 50      
Interest expense   $ 2          
1.875% U.S. Dollar Notes Due 2016              
Debt Instrument [Line Items]              
Debt instrument, stated interest rate             1.875%