Accumulated other comprehensive income (loss) - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	May 04, 2024	Apr. 29, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of sales	$ (938.4)	$ (1,036.0)
Income taxes	(6.5)	(9.5)
Net income	52.1	97.4
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net income	(0.2)	(4.3)
Reclassification out of Accumulated Other Comprehensive Income | Gains on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before income tax	(0.2)	(0.5)
Income taxes	0.0	0.1
Net income	(0.2)	(0.4)
Reclassification out of Accumulated Other Comprehensive Income | Defined benefit pension plan items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before income tax	0.0	0.2
Income taxes	0.0	(4.1)
Net income	0.0	(3.9)
Reclassification out of Accumulated Other Comprehensive Income | Pension settlement loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other non-operating income (expense), net	0.0	0.2
Reclassification out of Accumulated Other Comprehensive Income | Foreign currency contracts | Gains on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of sales	$ (0.2)	$ (0.5)