Revenue recognition - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
Extended Service Plans and Lifetime Warranty Agreements
Disaggregation of Revenue [Line Items]
Capitalized contract cost, amortization	$ 45.7	$ 44.4	$ 43.7