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SHORT-TERM DEBT - Credit Facility and Commercial Paper (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 13, 2019	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019	Jun. 18, 2021	Apr. 21, 2021	May 26, 2020
Line of Credit Facility [Abstract]
Short-term Debt		$ 0	$ 798	$ 805
Repayments		$ 0	1,413	$ 702
5 yr unsecured credit facility | Line of Credit
Line of Credit Facility [Abstract]
Credit facility initiation date	Mar. 13, 2019
Maximum borrowing capacity	$ 1,000					$ 1,350
Short-term debt terms (years)		five
Line of credit facility expiration date	Mar. 13, 2024
Outstanding balance		$ 0	0
Additional Incremental Term Loan Facility | Line of Credit
Line of Credit Facility [Abstract]
Maximum borrowing capacity	$ 500					$ 500
Outstanding balance		0	0
Commercial Paper | Line of Credit
Line of Credit Facility [Abstract]
Maximum borrowing capacity					$ 1,350		$ 1,000
Outstanding balance		$ 0	$ 75

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- References

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- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

+ 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 210.5-02.19(b),22(b))
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- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

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Date the credit facility first became available, in YYYY-MM-DD format.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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
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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Section S99
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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Description of the short-term debt arrangement, and disclosures pertaining to the underlying arrangements, including repayment terms, interest rates, restrictions on assets and activities, debt covenants, and other matters important to users of the financial statements.

+ References

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