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Costs and Estimated Earnings on Uncompleted Contracts (Tables)
 12 Months Ended
Dec. 31, 2014
Text Block [Abstract]  
Costs and Estimated Earnings on Uncompleted Contracts

Costs and estimated earnings on uncompleted contracts consist of (in millions):

 

     December 31,  
     2014      2013  

Costs incurred on uncompleted contracts

    $ 10,442       $ 7,608   

Estimated earnings

      4,699         3,553   
  

 

 

     

 

 

  
  15,141      11,161   

Less: Billings to date

   15,038      11,393   
  

 

 

     

 

 

  
$ 103    $ (232 ) 
  

 

 

     

 

 

  

Costs and estimated earnings in excess of billings on uncompleted contracts

 $ 1,878    $ 1,539   

Billings in excess of costs and estimated earnings on uncompleted contracts

   (1,775 )    (1,771 ) 
  

 

 

     

 

 

  
$ 103    $ (232 )