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Shareholders' equity - Schedule of Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Oct. 28, 2023	Jul. 29, 2023	Apr. 29, 2023	Oct. 29, 2022	Jul. 30, 2022	Apr. 30, 2022	Oct. 28, 2023	Oct. 29, 2022
Class of Stock [Line Items]
Common stock, dividends (usd per share)	$ 0.23	$ 0.23	$ 0.23	$ 0.20	$ 0.20	$ 0.20	$ 0.69	$ 0.60
Dividends, common stock	$ 10.2	$ 10.3	$ 10.4	$ 9.2	$ 9.2	$ 9.3	$ 30.9	$ 27.7
Dividends declared per preferred share (usd per share)	$ 13.14	$ 13.14	$ 13.14	$ 13.14	$ 13.14	$ 13.14	$ 39.42	$ 39.42
Dividends, preferred stock	$ 8.2	$ 8.2	$ 8.2	$ 8.2	$ 8.2	$ 8.2	$ 24.6	$ 24.6
Accrued expenses and other current liabilities | Series A Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Dividends payable	$ 8.2			$ 8.2			$ 8.2	$ 8.2

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