STOCKHOLDERS' EQUITY - Employee Stock Purchase Plan Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense	$ 75,341	$ 70,188	$ 217,880	$ 193,418
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense	$ 2,300	$ 2,600	$ 5,700	$ 6,300