STOCK-BASED COMPENSATION - Milestone Options Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense	$ 70,188	$ 54,913	$ 193,418	$ 163,308
Milestone Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			1,304,605
Share-based payment arrangement, expense		$ 900	$ 1,800	$ 2,700
Cost not yet recognized, amount	$ 6,000		$ 6,000
Cost not yet recognized, period for recognition			1 year 9 months 18 days