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Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Other Intangible Assets

Our other intangible assets as of December 31, 2014 and 2013 were comprised of the following (in millions):

 

     Customer
and
Supplier
Relationships		     Covenants
Not-to-
Compete		     Licenses,
Permits
and Other		     Total  

December 31, 2014:

         

Intangible assets

    $ 576      $ 63      $ 116      $ 755   

Less accumulated amortization

      (231 )      (44 )      (40 )      (315 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  
   $ 345      $ 19      $ 76      $ 440   
  

 

 

    

 

 

    

 

 

    

 

 

  

December 31, 2013:

         

Intangible assets

    $ 604      $ 87      $ 123      $ 814   

Less accumulated amortization

      (193 )      (57 )      (35 )      (285 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  
   $ 411      $ 30      $ 88      $ 529