STOCKHOLDERS' EQUITY - Milestone Options Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 30, 2021	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense		$ 297,587	$ 267,531	$ 216,870
Milestone Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	1,404,605
Vesting percentage	100.00%
Share-based payment arrangement, expense		3,300	$ 2,600	$ 3,600
Cost not yet recognized, amount		$ 1,900
Cost not yet recognized, period for recognition		7 months 6 days