DERIVATIVE INSTRUMENTS (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Classification and gains (losses) including accrued interest expense related to derivative instruments
Not designated as hedges, gains (losses)	$ (52)	$ (100)	$ 214	$ 45
Interest Rate Contracts \| OCI
Classification and gains (losses) including accrued interest expense related to derivative instruments
Cash flow hedges, recognized in OCI, effective portion, gains (losses)	(1)	(2)	(6)	(5)
Interest Rate Contracts \| Interest Expense
Classification and gains (losses) including accrued interest expense related to derivative instruments
Fair value hedges, gains (losses)	(77)	29	144	(4)
Not designated as hedges, gains (losses)	1	2	(12)	4
Interest Rate Contracts \| Interest Expense \| Cash Flow Hedges Member
Classification and gains (losses) including accrued interest expense related to derivative instruments
Cash flow hedges, reclassified from OCI, effective portion, gains (losses)	(3)	(3)	(6)	(8)
Foreign Exchange Contracts \| OCI
Classification and gains (losses) including accrued interest expense related to derivative instruments
Cash flow hedges, recognized in OCI, effective portion, gains (losses)	1	(3)	2	(5)
Foreign Exchange Contracts \| Cost of Sales
Classification and gains (losses) including accrued interest expense related to derivative instruments
Not designated as hedges, gains (losses)	(19)	(26)	26	30
Foreign Exchange Contracts \| Other Operating Expense
Classification and gains (losses) including accrued interest expense related to derivative instruments
Not designated as hedges, gains (losses)	(34)	(76)	200	11
Foreign Exchange Contracts \| Other Operating Expense \| Cash Flow Hedges Member
Classification and gains (losses) including accrued interest expense related to derivative instruments
Cash flow hedges, reclassified from OCI, effective portion, gains (losses)	$ 1	$ (1)	$ 2	$ (6)

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4D

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624177-113959

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

+ Details

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- Definition

Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

+ References

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- Definition

Amount of net unrealized gain (loss) related to the change in fair value of foreign currency exchange rate derivatives designated as cash flow hedging instruments. Recorded in accumulated other comprehensive income to the extent that the cash flow hedge is determined to be effective.

+ References

+ Details

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- Definition

Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective.

+ References

+ Details

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