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INVENTORIES, NET (Tables)
 3 Months Ended
Mar. 26, 2017
Inventories

Inventories, net consisted of the following (in millions):

 

      

March 26,

2017

       December 31, 
 2016 		  

 

  

Work-in-process, primarily related to long-term contracts and programs in progress

      $ 8,090                $ 7,864           

Spare parts, used aircraft and general stock materials

        785                 833           

Other inventories

        819                 719           

 

  

Total inventories

        9,694                 9,416           

Less: customer advances and progress payments

           (4,620)                   (4,746)          

 

  

Total inventories, net

      $ 5,074                $ 4,670