Income taxes - Schedule of Reconciliation of Statutory Tax Rate to Effective Tax Rate (Details)	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
Income Tax Disclosure [Abstract]
US federal income tax rates	21.00%	21.00%	21.00%
US state income taxes	7.10%	2.70%	2.90%
Differences between US federal and foreign statutory income tax rates	1.10%	0.40%	0.80%
Expenditures permanently disallowable for tax purposes, net of permanent tax benefits	0.30%	(0.40%)	(1.40%)
Impact of global reinsurance arrangements	(32.30%)	(5.80%)	(8.70%)
Impact of global financing arrangements	(4.70%)	(1.50%)	(2.20%)
Impairment of goodwill	45.70%	0.00%	0.00%
Base Erosion and Anti-Abuse Tax	7.70%	1.50%	0.00%
Uncertain tax positions	5.70%	(2.40%)	4.70%
Bermuda ETA	0.00%	(41.10%)	0.00%
Valuation allowance	(1.80%)	(0.30%)	0.00%
Other items	0.90%	(0.80%)	(0.60%)
Effective tax rate	50.70%	(26.70%)	16.50%