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Debt (Tables)
6 Months Ended
Jun. 30, 2015
Debt Disclosure [Abstract]  
Debt

Debt consists of (in millions):

 

     June 30,
2015
     December 31,
2014
 

Senior Notes, interest at 6.125% payable semiannually, principal due on August 15, 2015

   $ 151       $ 151   

Senior Notes, interest at 1.35% payable semiannually, principal due on December 1, 2017

     500         500   

Senior Notes, interest at 2.6% payable semiannually, principal due on December 1, 2022

     1,396         1,396   

Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042

     1,096         1,096   

Commercial paper

     1,140         —     

Other

     22         23   
  

 

 

    

 

 

 

Total debt

     4,305         3,166   

Less current portion

     151         152   
  

 

 

    

 

 

 

Long-term debt

   $ 4,154       $ 3,014