Employee Benefit Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Postemployment Benefits [Abstract]
Percentage of participant's contribution matched by employer	50.00%
Employer matching contribution, maximum percentage of participant's base salary	6.00%
Defined contribution plan expense	$ 36.2	$ 34.7	$ 33.2