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Inventories and Contracts in Progress
3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Inventories and Contracts in Progress
Inventories and Contracts in Progress
(Dollars in millions)
March 31, 2015
 
December 31, 2014
Raw materials
$
2,058

 
$
2,056

Work-in-process
4,006

 
3,596

Finished goods
3,941

 
3,776

Contracts in progress
8,210

 
8,189

 
18,215

 
17,617

Less:
 
 
 
Progress payments, secured by lien, on U.S. Government contracts
(434
)
 
(300
)
Billings on contracts in progress
(7,445
)
 
(7,452
)
 
$
10,336

 
$
9,865


Inventory also includes capitalized contract development costs related to certain aerospace programs at UTC Aerospace Systems. As of March 31, 2015 and December 31, 2014, these capitalized costs were $131 million and $141 million, respectively, which will be liquidated as production units are delivered to the customer.