DEBT (Components and Additional Disclosures) (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2019	Oct. 31, 2018
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 37	$ 31
3.00% Senior Notes 2029
Debt Instrument [Line Items]
Issuance date of debt	Oct. 31, 2019
Aggregate face amount of debt	$ 500
Percentage Of Face Amount Of Debt Instrument Issued	99.914%
Fixed interest rate per annum	3.00%
Debt Instrument, Frequency of Periodic Payment	semi-annually
Debt Issuance Costs, Gross	$ 4
Maturity date	Oct. 30, 2029
4.55% Senior Notes 2024
Debt Instrument [Line Items]
Issuance date of debt	Oct. 31, 2014
Aggregate face amount of debt	$ 600
Percentage Of Face Amount Of Debt Instrument Issued	99.966%
Fixed interest rate per annum	4.55%
Debt Instrument, Frequency of Periodic Payment	semi-annually
Debt Issuance Costs, Gross	$ 5
Maturity date	Oct. 30, 2024
4.60% Senior Notes 2027
Debt Instrument [Line Items]
Issuance date of debt	Apr. 30, 2017
Aggregate face amount of debt	$ 700
Percentage Of Face Amount Of Debt Instrument Issued	99.873%
Fixed interest rate per annum	4.60%
Debt Instrument, Frequency of Periodic Payment	semi-annually
Debt Issuance Costs, Gross	$ 6
Maturity date	Apr. 06, 2027

Proceeds obtained expressed as a percentage of debt instrument face value.

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Balance Type:	credit
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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

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Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Details

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