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CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Details) - Held-to-maturity Securities - USD ($) $ in Millions | 12 Months Ended
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Jan. 31, 2021 | Jan. 31, 2020
Cash and Cash Equivalents |  |
Maturity period | 292 days | 165 days
Accrued interest on held-to-maturity securities | $ 0.1 | $ 0.5
Weighted average annual interest rates of CDs (as a percent) | 0.20% | 1.80%

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- Definition Accumulated Accrued Interest On Held To Maturity Securities + References No definition available. + Details
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Balance Type: | debit
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- Definition Represents the maturity period of investments. + References No definition available. + Details
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Balance Type: | na
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- Definition Weighted average interest rate for certificates of deposit liabilities in banking offices. + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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