Stock-Based Compensation - Restricted Stock Units and Stock Options Narrative (Details) $ in Millions	6 Months Ended
	Jul. 31, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, options, amount	$ 75.1
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized amount	$ 497.5
Cost not yet recognized, period for recognition	3 years 3 months 18 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, period for recognition	2 years