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LONG-TERM DEBT - Text (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Sep. 13, 2012 | Jan. 31, 2021 | Jan. 31, 2020
Debt Instrument |  |  |
Early Repayment of Senior Debt |  | $ 105 | $ 0
Senior Notes 2022 |  |  |
Debt Instrument |  |  |
Issuance date of debt | Sep. 13, 2012 |  |
Aggregate face amount of debt | $ 400 |  |
Percentage Of Face Amount Of Senior Note Instrument Issued | 99.80% |  |
Maturity date of debt | Oct. 01, 2022 |  |
Fixed interest rate per annum | 3.20% |  |
Date interest payment commenced | Apr. 01, 2013 |  |
Early Repayment of Senior Debt |  | 105 |
Repayments of Senior Debt |  | 100 |
Payment of accrued and unpaid interest |  | $ 1 |

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