Basis of presentation - Accounting policies (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2023	Jan. 28, 2022	Jan. 29, 2021
Revenue recognition
Liability for outstanding gift cards	$ 10.7	$ 9.7
Breakage income related to gift card program	2.3	1.7	$ 1.3
Advertising costs
Advertising costs	126.0	117.2	107.4
Expenses related to vendor funding for cooperative advertising offset	$ 33.4	$ 34.3	$ 33.4
3.25% Senior Notes due April 15, 2023
Other comprehensive income
Credit facility term	10 years