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Debt
6 Months Ended
Jun. 30, 2014
Debt Disclosure [Abstract]  
Debt
8. Debt

Debt consists of (in millions):

 

     June 30,      December 31,  
     2014      2013  

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   

Other

     5         7   
  

 

 

    

 

 

 

Total debt

     3,148         3,150   

Less current portion

     —           1   
  

 

 

    

 

 

 

Long-term debt

   $ 3,148       $ 3,149   
  

 

 

    

 

 

 

The Company has a $3.5 billion, five-year unsecured revolving credit facility which expires September 28, 2018. The Company also has a commercial paper program that is supported by its revolving credit facility. At June 30, 2014, the Company had no commercial paper borrowings and no borrowings against its revolving credit facility. Funds available under the Company’s revolving credit facility were $2,369 million due to $1,131 million in outstanding letters of credit issued under the facility. Interest under this multicurrency facility is based upon LIBOR, NIBOR or EURIBOR plus 0.875% subject to a ratings-based grid, or the U.S. prime rate. The credit facility contains a financial covenant regarding maximum debt to capitalization and the Company was in compliance at June 30, 2014.

The Company also had $3,150 million of additional outstanding letters of credit at June 30, 2014, primarily in Norway, that are under various bilateral committed letter of credit facilities. Other letters of credit are issued as bid bonds, advanced payment bonds and performance bonds.

The fair value of the Company’s debt is estimated using Level 2 inputs in the fair value hierarchy and is based on quoted prices for those or similar instruments. At June 30, 2014 and December 31, 2013, the fair value of the Company’s unsecured Senior Notes approximated $3,054 million and $2,896 million, respectively. At both June 30, 2014 and December 31, 2013, the carrying value of the Company’s unsecured Senior Notes approximated $3,143 million.