Commitments and Contingencies - Accrued Restructuring Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Restructuring Reserve [Roll Forward]
Restructuring costs incurred	$ 24,726	$ 2,626	$ 23,446
Fiscal Year 2025 Workforce Restructuring
Restructuring Reserve [Roll Forward]
Accrued restructuring costs, beginning balance	0	0
Restructuring costs incurred	24,726	0
Amount paid	(14,948)	0
Accrued restructuring costs, ending balance	9,778	0	0
Fiscal Year 2023 Workforce Restructuring
Restructuring Reserve [Roll Forward]
Accrued restructuring costs, beginning balance	335	3,889
Restructuring costs incurred	0	2,626
Amount paid	(335)	(6,180)
Accrued restructuring costs, ending balance	$ 0	$ 335	$ 3,889