Stock-Based Compensation - Restricted Stock Units and Stock Options Narrative (Details) $ in Millions	6 Months Ended
	Jul. 31, 2024 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, options, amount	$ 38.8
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized amount	$ 570.1
Cost not yet recognized, period for recognition	2 years 10 months 24 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, period for recognition	1 year 8 months 12 days