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CASH, CASH EQUIVALENTS AND INVESTMENTS - Earnings on Cash and Invested Funds (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
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Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2025 | Jul. 31, 2024 | Jan. 31, 2025
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |  |  |
Earnings on investments | $ 5.5 | $ 5.3 | $ 11.0 | $ 10.1 |
Weighted average annual yield | 4.00% |  | 4.00% |  | 4.10%

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- Definition Represents the percentage of weighted average annual yields on outstanding invested funds and interest-bearing cash account balances. + References No definition available. + Details
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- Definition The aggregate amount of income from investments (for example, dividends) not considered a component of the entity's core operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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