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Supplemental Cash Flow Information
 3 Months Ended
Mar. 27, 2015
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information

20.  Supplemental Cash Flow Information

 

     First Quarter Ended  
     March 27,
2015		      March 28,
2014		  
     (in millions)  

Interest paid on outstanding debt

    $ 37       $ 48   

Income tax payments

      10         26   

Income tax refunds

      1         1