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Costs and Estimated Earnings on Uncompleted Contracts (Tables)
 3 Months Ended
Mar. 31, 2017
Text Block [Abstract]  
Costs and Estimated Earnings on Uncompleted Contracts

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

 

    March 31,
2017		     December 31,
2016		  

Costs incurred on uncompleted contracts

   $ 7,257     $ 8,132  

Estimated earnings

     3,424       3,869  
 

 

 

    

 

 

  
    10,681       12,001  

Less: Billings to date

     10,391       11,776  
 

 

 

    

 

 

  
  $ 290     $ 225  
 

 

 

    

 

 

  

Costs and estimated earnings in excess of billings on uncompleted contracts

   $ 653     $ 665  

Billings in excess of costs and estimated earnings on uncompleted contracts

     (363 )      (440 ) 
 

 

 

    

 

 

  
  $ 290     $ 225