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

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

 

     March 31,     December 31,  
     2014     2013  

Costs incurred on uncompleted contracts

    $ 8,521      $ 7,608   

Estimated earnings

      3,909        3,553   
  

 

 

    

 

 

  
     12,430        11,161   

Less: Billings to date

      12,989        11,393   
  

 

 

    

 

 

  
   $ (559 )    $ (232 ) 
  

 

 

    

 

 

  

Costs and estimated earnings in excess of billings on uncompleted contracts

    $ 1,520      $ 1,539   

Billings in excess of costs and estimated earnings on uncompleted contracts

      (2,079 )      (1,771 ) 
  

 

 

    

 

 

  
   $ (559 )    $ (232 )