Benefit plans (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Feb. 02, 2024	Feb. 03, 2023
Benefit plans
Matching contribution expense related to the Company's 401(k) plan	$ 38.2	$ 35.9	$ 35.7
Compensation expense	$ 0.7	$ 1.0	$ 1.2