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Costs and Estimated Earnings on Uncompleted Contracts
 12 Months Ended
Dec. 31, 2015
Text Block [Abstract]  
Costs and Estimated Earnings on Uncompleted Contracts

8. Costs and Estimated Earnings on Uncompleted Contracts

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

 

     December 31,  
     2015      2014  

Costs incurred on uncompleted contracts

    $ 9,082       $ 10,442   

Estimated earnings

      4,080         4,699   
  

 

 

     

 

 

  
     13,162         15,141   

Less: Billings to date on uncompleted contracts

      12,697         15,038   
  

 

 

     

 

 

  
   $ 465       $ 103   
  

 

 

     

 

 

  

Costs and estimated earnings in excess of billings on uncompleted contracts

    $ 1,250       $ 1,878   

Billings in excess of costs and estimated earnings on uncompleted contracts

      (785 )       (1,775 ) 
  

 

 

     

 

 

  
   $ 465       $ 103