ACQUISITIONS - Prompt and Observo Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Business Combination [Line Items]
Stock-based compensation expense		$ 297,587	$ 267,531	$ 216,870
Observo
Business Combination [Line Items]
Business acquisition, transaction costs	$ 1,900	1,900
Stock-based compensation expense	3,300
Prompt
Business Combination [Line Items]
Business acquisition, transaction costs	2,700	$ 2,700
Stock-based compensation expense	$ 9,800