Organization and summary of significant accounting policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
Non-cash investing activities:
Capital expenditures in accounts payable	$ 27.9	$ 13.4	$ 14.9
Supplemental cash flow information:
Interest paid	13.8	15.9	11.7
Income tax paid (refunded), net	$ 115.5	13.0	74.6
CARES Act, income tax refunded		$ 42.6	$ 53.8