INVENTORIES (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2015	Oct. 31, 2014	Apr. 30, 2014
INVENTORIES
Raw materials and supplies	$ 1,675	$ 1,724	$ 2,024
Work-in-process	630	654	956
Finished goods and parts	3,831	3,360	4,389
Total FIFO value	6,136us-gaap_FIFOInventoryAmount	5,738us-gaap_FIFOInventoryAmount	7,369us-gaap_FIFOInventoryAmount
Less adjustment to LIFO value	1,512us-gaap_InventoryLIFOReserve	1,528us-gaap_InventoryLIFOReserve	1,519us-gaap_InventoryLIFOReserve
Inventories	$ 4,624.2us-gaap_InventoryNet	$ 4,209.7us-gaap_InventoryNet	$ 5,849.6us-gaap_InventoryNet

The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

+ References

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- Definition

Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or 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. This amount is net of valuation reserves and adjustments.

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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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