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Debt 2019 Debt Redemption (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2019
Sep. 28, 2019
Dec. 28, 2019
Dec. 29, 2018
May 31, 2018
Nov. 30, 2016
Mar. 31, 2014
Dec. 31, 2010
Nov. 30, 2009
Debt Instrument [Line Items]                  
Interest expense $ 15   $ 284 $ 287          
Debt repurchase amount     $ 1,000            
4.15% U.S. Dollar Notes Due 2019                  
Debt Instrument [Line Items]                  
Debt instrument, stated interest rate 4.15% 4.15%             4.15%
Interest expense $ 1 $ 1              
Debt repurchase amount $ 191 $ 309              
4.0% U.S. Dollar Notes Due 2020                  
Debt Instrument [Line Items]                  
Debt instrument, stated interest rate 4.00%             4.00%  
Interest expense $ 6                
Debt repurchase amount $ 248           $ 150    
3.25% U.S. Dollar Notes Due 2021                  
Debt Instrument [Line Items]                  
Debt instrument, stated interest rate 3.25%       3.25%        
Interest expense $ 6                
Debt repurchase amount $ 202                
2.65% U.S. Dollar Notes Due 2023                  
Debt Instrument [Line Items]                  
Debt instrument, stated interest rate 2.65%         2.65%      
Interest expense $ 2                
Debt repurchase amount $ 50