Stock-Based Compensation - Stock Option Information Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (in USD per share)				$ 13.14
Options, exercises in period, intrinsic value		$ 170.1	$ 173.0	$ 333.7
Cost not yet recognized, options, amount	$ 51.8	$ 51.8
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, period for recognition	1 year 10 months 6 days