Long-term debt - Narrative (Details)		12 Months Ended
	Sep. 05, 2019 USD ($)	Feb. 01, 2025 USD ($)	Feb. 03, 2024 USD ($)	Jan. 28, 2023 USD ($)	Aug. 23, 2024 USD ($)	Jul. 28, 2021 USD ($)	Sep. 27, 2019 USD ($)	Sep. 06, 2019 USD ($)	May 19, 2014 USD ($)
Debt Instrument [Line Items]
Repayments of senior debt		$ 147,800,000	$ 0	$ 0
Payments of Debt Issuance Costs		4,300,000	$ 0	0
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 1,200,000,000		$ 1,500,000,000
Additional borrowing capacity						$ 600,000,000
Payments of Debt Issuance Costs		$ 4,300,000
Interest rate at period end		5.90%	6.70%
Stand-by letters of credit		$ 18,000,000	$ 18,200,000
Long-term debt		0	0
Line of credit facility, remaining borrowing capacity		$ 1,200,000,000	1,100,000,000
Covenant, minimum coverage ratio		1.00
Debt covenant, fixed covenant ratio threshold		$ 116,000,000
Debt Issuance Costs, Gross		16,900,000
Unamortized debt issuance expense		7,100,000	4,600,000
Amortization related to capitalized fees		$ 1,800,000	$ 1,800,000	$ 1,900,000
Senior Notes
Debt Instrument [Line Items]
Face amount								$ 147,800,000	$ 400,000,000
Stated interest rate									4.70%
Repayments of senior debt	$ 239,600,000
Debt Instrument, Repurchased Face Amount	$ 950.00