Goodwill and intangibles - Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
Goodwill [Roll Forward]
Beginning balance	$ 754.5
Impairment	(272.5)	$ 0.0	$ 0.0
Ending balance	482.0	754.5
North America
Goodwill [Roll Forward]
Beginning balance	754.5	751.7
Acquisitions		2.8
Impairment	(272.5)
Ending balance	482.0	754.5	751.7
Accumulated impairment losses	$ 848.5	$ 576.0	$ 576.0