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Inventories and Contracts in Progress (Tables)
 12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Inventory Table [Text Block]
(dollars in millions)
2015
 
2014
Raw materials
$
2,037

 
$
1,948

Work-in-process
2,422

 
2,093

Finished goods
3,183

 
2,975

Contracts in progress
8,668

 
8,189

 
16,310

 
15,205

Less:
 
 
 
Progress payments, secured by lien, on U.S. Government contracts
(239
)
 
(117
)
Billings on contracts in progress
(7,936
)
 
(7,446
)
 
$
8,135

 
$
7,642