Share-based compensation - Schedule of Additional Information about Awards Granted under Omnibus Plan (Details) - USD ($) $ in Millions	12 Months Ended
Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of awards vested	$ 29.0	$ 121.8	$ 205.1

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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+ Details