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LONG-TERM DEBT (Details) - USD ($) $ in Millions | Jun. 04, 2020 | Jul. 31, 2020 | Oct. 31, 2019
--- | --- | --- | ---
Debt Instrument |  |  |
Long-term debt |  | $ 2,283 | $ 1,786
Senior Notes 2022 |  |  |
Debt Instrument |  |  |
Long-term debt |  | 399 | 399
Senior Notes 2023 |  |  |
Debt Instrument |  |  |
Long-term debt |  | 598 | 597
Senior Notes 2026 |  |  |
Debt Instrument |  |  |
Long-term debt |  | 298 | 298
Senior Notes 2029 |  |  |
Debt Instrument |  |  |
Long-term debt |  | 493 | 492
Senior Notes 2030 |  |  |
Debt Instrument |  |  |
Long-term debt |  | $ 495 | $ 0
2030 Senior Notes |  |  |
Issuance date of debt | Jun. 04, 2020 |  |
Aggregate face amount of debt | $ 500 |  |
Percentage of principle amount redeemed | 99.812% |  |
Maturity date of debt | Jun. 04, 2030 |  |
Fixed interest rate per annum | 2.10% |  |
Debt interest payment frequency | semi-annually |  |
Date interest payment commenced | Dec. 04, 2020 |  |

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