Stockholders’ Deficit - Restricted Stock Units Narrative (Details) - Restricted stock units - USD ($) $ in Millions	6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expiration period	7 years
Vested in period, fair value	$ 144.6	$ 446.0
Cost not yet recognized	$ 684.3
Cost not yet recognized, period for recognition	1 year 9 months 18 days