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Debt (Tables)
6 Months Ended
Jun. 30, 2018
Debt Disclosure [Abstract]  
Debt

Debt consists of (in millions):

 

     June 30,      December 31,  
     2018      2017  

$1.4 billion in Senior Notes, interest at 2.60% payable semiannually, principal due on December 1, 2022

   $ 1,393      $ 1,392  

$1.1 billion in Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042

     1,088        1,088  

Other

     234        232  
  

 

 

    

 

 

 

Total debt

     2,715        2,712  

Less current portion

     8        6  
  

 

 

    

 

 

 

Long-term debt

   $ 2,707      $ 2,706