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SHORT-TERM DEBT - Credit Facility (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 31, 2020 | Mar. 13, 2019 | Jul. 31, 2020 | Jul. 31, 2020 | Jul. 31, 2019 | May 26, 2020
Short-term Debt |  |  |  |  |  |
Proceeds from Lines of Credit |  |  |  | $ 798 | $ 0 |
Revolving Credit Facility |  |  |  |  |  |
Short-term Debt |  |  |  |  |  |
Initiation date of credit facility |  | Mar. 13, 2019 |  |  |  |
Maximum borrowing capacity of credit facility |  | $ 1,000 |  |  |  |
Credit faciity terms (in years) |  | five |  |  |  |
Expiration date of credit facility |  | Mar. 13, 2024 |  |  |  |
Proceeds from Lines of Credit |  |  | $ 798 |  |  |
Repayments of revolving credit facility |  |  | 913 |  |  |
Amount outstanding on credit facility | $ 0 |  | 0 | 0 |  |
Revolving Credit Facility | Incremental Short-Term Loan Facility |  |  |  |  |  |
Short-term Debt |  |  |  |  |  |
Maximum borrowing capacity of credit facility | 500 |  | 500 | 500 |  |
Repayments of Short-term Debt |  |  |  | 500 |  |
Revolving Credit Facility | Additional Incremental Short-Term Loan Facility |  |  |  |  |  |
Short-term Debt |  |  |  |  |  |
Maximum borrowing capacity of credit facility | 500 |  | 500 | 500 |  |
Amount outstanding on credit facility | 0 |  | 0 | 0 |  |
Commercial Paper |  |  |  |  |  |
Short-term Debt |  |  |  |  |  |
Maximum borrowing capacity of credit facility |  |  |  |  |  | $ 1,000
Amount outstanding on credit facility | $ 40 |  | $ 40 | $ 40 |  |
Weighted Average Interest Rate, at Point in Time | 0.23% |  | 0.23% | 0.23% |  |
Weighted Average Maturity Date at Point in Time | 3 years |  |  |  |  |

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- Definition 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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