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Inventories and Contracts in Progress (Tables)
 9 Months Ended
Sep. 30, 2013
Notes to Condensed Consolidated Financial Statements [Abstract]  
Inventory [Text Block]
(Dollars in millions)
September 30,
2013
 
December 31,
2012
Raw materials
$
1,967

 
$
1,861

Work-in-process
4,864

 
4,151

Finished goods
3,556

 
3,205

Contracts in progress
8,038

 
7,354

 
18,425

 
16,571

Less:
 
 
 
Progress payments, secured by lien, on U.S. Government contracts
(379
)
 
(274
)
Billings on contracts in progress
(7,281
)
 
(6,760
)
 
$
10,765

 
$
9,537