Inventories, Net (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Inventories, Net
Finished goods	$ 247	$ 231
Work in process	122	88
Raw materials	386	317
Total product inventory	755	636
Production costs of contracts in process	325	296
Less - progress payments	(69)	(76)
Production costs of contracts in process, net	256	220
Inventories, net	$ 1,011	$ 856

Inventoried costs related to long-term contracts, net.

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Carrying amount as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Carrying amount as of the balance sheet date of inventories associated with long-term contracts or programs.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

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Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Carrying amount as of the balance sheet date of merchandise or goods which are partially completed, are generally comprised of raw materials, labor and factory overhead costs, and which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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Amount of advances received from customers under long-term contracts which have been offset against inventories accounts at the balance sheet date.

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