Share-based Compensation Plans - Classification of Share-based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 30, 2025	Apr. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	$ 1.5	$ 3.0
Technology
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	0.3	0.6
Marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	0.0	0.0
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	$ 1.2	$ 2.4

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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