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Debt Long-term Debt Footnote C (Details) - USD ($)
$ in Millions
1 Months Ended
Mar. 31, 2014
Feb. 28, 2013
Jan. 02, 2016
Jan. 03, 2015
Feb. 14, 2013
Debt Instrument [Line Items]          
Notional amounts of interest rate swaps     $ 1,680 $ 4,214  
2.75% U.S. Dollar Note Due 2023 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount         $ 400
Debt Instrument, Term   10 years      
Debt instrument, stated interest rate         2.75%
Debt Instrument, Interest Rate, Effective Percentage         2.74%
Debt Instrument Amount Redeemed $ 189        
Reduction in interest expense 10        
Debt Instrument Accelerated Gains 1        
Debt instrument, fee amount $ 2        
4.25% U.S. Dollar Notes Due 2013 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount   $ 750      
Debt instrument, stated interest rate   4.25%