| Inventory [Text Block] | | (Dollars in millions) | | September 30, 2011 | | December 31, 2010 | | Raw materials | | $ | 1,357 | | $ | 1,221 | | Work-in-process | | | 3,696 | | | 3,259 | | Finished goods | | | 3,258 | | | 3,026 | | Contracts in progress | | | 7,058 | | | 6,340 | | | | | 15,369 | | | 13,846 | | Less: | | | | | | | | Progress payments, secured by lien, on U.S. Government contracts | | | (463) | | | (275) | | Billings on contracts in progress | | | (6,289) | | | (5,805) | | | | $ | 8,617 | | $ | 7,766 |
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