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FAIR VALUE MEASUREMENTS, Fair value of assets and liabilities measured on a recurring basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Assets Short - term [Abstract]
Cash equivalents (money market funds)	$ 482	$ 295
Derivative instruments (foreign exchange contracts)	3	1
Assets, Long-term [Abstract]
Trading securities	12	12
Available-for-sale investments	28	41
Total assets measured at fair value	525	349
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	8	10
Liabilities Long-term [Abstract]
Deferred compensation liability	12	12
Total liabilities measured at fair value	20	22
Level 1
Assets Short - term [Abstract]
Cash equivalents (money market funds)	482	295
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Trading securities	12	12
Available-for-sale investments	28	41
Total assets measured at fair value	522	348
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Liabilities Long-term [Abstract]
Deferred compensation liability	0	0
Total liabilities measured at fair value	0	0
Level 2
Assets Short - term [Abstract]
Cash equivalents (money market funds)	0	0
Derivative instruments (foreign exchange contracts)	3	1
Assets, Long-term [Abstract]
Trading securities	0	0
Available-for-sale investments	0	0
Total assets measured at fair value	3	1
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	8	10
Liabilities Long-term [Abstract]
Deferred compensation liability	12	12
Total liabilities measured at fair value	20	22
Level 3
Assets Short - term [Abstract]
Cash equivalents (money market funds)	0	0
Derivative instruments (foreign exchange contracts)	0	0
Assets, Long-term [Abstract]
Trading securities	0	0
Available-for-sale investments	0	0
Total assets measured at fair value	0	0
Liabilities, Short-term [Abstract]
Derivative instruments (foreign exchange contracts)	0	0
Liabilities Long-term [Abstract]
Deferred compensation liability	0	0
Total liabilities measured at fair value	$ 0	$ 0

X

- Definition

This element represents a certain statement of financial position liability which deferred compensation liability, measured at fair value on a recurring basis.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- References

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

+ References

No definition available.

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- References

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26626-111562

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6526789

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