STOCKHOLDERS' EQUITY - Performance Stock Units Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 297,587	$ 267,531	$ 216,870
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 6,600
Performance Stock Units | Observo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	100.00%
Stock-based compensation expense	$ 1,300
Performance Stock Units | Prompt and Observo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	500
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,900	$ 1,000
Cost not yet recognized amount	$ 544,700
Cost not yet recognized, period for recognition	2 years 9 months 18 days
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized amount	$ 10,500
Cost not yet recognized, period for recognition	10 months 24 days
Minimum | Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Award vesting period	1 year
Minimum | Performance Stock Units | Prompt and Observo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Maximum | Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	225.00%
Award vesting period	4 years
Maximum | Performance Stock Units | Prompt and Observo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%