Stock-Based Compensation - Restricted Stock Units and Stock Options Narrative (Details) $ in Millions	3 Months Ended
	Apr. 30, 2024 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, options, amount	$ 47.5
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized amount	$ 614.8
Cost not yet recognized, period for recognition	3 years 1 month 6 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, period for recognition	1 year 9 months 18 days