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Supplemental Cash Flow Information
 6 Months Ended
Jun. 27, 2014
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information

21.  Supplemental Cash Flow Information

 

     First Half Ended  
     June 27,
2014		      June 28,
2013		  
     (in millions)  

Interest paid on outstanding debt

    $ 86       $ 86   

Income tax payments

      104         137   

Income tax refunds

      6         16