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Inventories (Details) (USD $) In Millions, unless otherwise specified	Jan. 31, 2012	Oct. 31, 2011
Inventory Disclosure [Abstract]
Finished products	$ 985	$ 873
Work in process	222	174
Raw materials	709	667
Total inventories	$ 1,916	$ 1,714

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, 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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