CASH, CASH EQUIVALENTS AND INVESTMENTS - Earnings on Investments (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
CASH, CASH EQUIVALENTS AND INVESTMENTS
Earnings on investments	$ 4.8	$ 3.3	$ 9.3	$ 5.7

The aggregate amount of income from investments (for example, dividends) not considered a component of the entity's core operations.

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration