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Share-based compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Feb. 01, 2025	Feb. 03, 2024
Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	6,975,000
Performance Shares \| Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period	3 years	3 years	3 years
Stock Options \| Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period	10 years
Restricted Stock Units (RSUs) \| Other Current Liabilities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends payable, current	$ 0.6
Restricted Stock Units (RSUs) \| Minimum \| Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period	1 year
Restricted Stock Units (RSUs) \| Maximum \| Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period	3 years