STOCKHOLDERS' EQUITY - Stock-Based Compensation Expense Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 92,114	$ 73,884	$ 167,003	$ 142,539
Stock-Based Compensation | Prompt
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,700		3,300
Stock-Based Compensation | Observo
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 6,000		$ 11,700