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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 |

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