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Organization and summary of significant accounting policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 29, 2022	Jan. 30, 2021	Feb. 01, 2020
Non-cash investing activities:
Capital expenditures in accounts payable	$ 6.2	$ 1.2	$ 0.1
Supplemental cash flow information:
Interest paid	14.8	30.5	34.7
Income tax paid (refunded), net	$ 120.7	(176.0)	$ 5.7
CARES Act, income tax refunded		$ 183.4

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Proceeds from Income Tax Refunds, CARES Act

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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