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Shareholders' equity - Schedule of Class of Treasury Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		75 Months Ended
	May 04, 2024	Apr. 29, 2023	May 04, 2024
Class of Stock [Line Items]
Amount repurchased	$ 7.4	$ 39.1
2017 Program
Class of Stock [Line Items]
Shares repurchased (in shares)	0.1	0.5
Amount repurchased	$ 7.4	$ 39.1	$ 1,200.0
Average repurchase price per share (usd per share)	$ 101.10	$ 74.95

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