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Debt Long-term Debt Footnote F (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 30, 2016
Nov. 30, 2011
Dec. 31, 2016
Jan. 02, 2016
Debt Instrument [Line Items]        
Notional amounts of interest rate swaps     $ 4,018 $ 1,680
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     2.15%  
Notional amounts of interest rate swaps $ 300      
Fair value adjustment for interest rate swaps     $ 5  
1.875% U.S. Dollar Notes Due 2016 [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Face Amount   $ 500    
Debt Instrument, Term   5 years    
Debt instrument, stated interest rate   1.875%    
Debt Instrument, Interest Rate, Effective Percentage   1.63%