Retirement plans - Additional Information (Details)	12 Months Ended
	Feb. 01, 2020 USD ($) plan	Feb. 02, 2019 USD ($)	Feb. 03, 2018 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Liability, defined contribution plan	$ 35,400,000	$ 35,500,000
Pension plan
Defined Benefit Plan Disclosure [Line Items]
Employer discretionary contribution amount	$ 9,100,000	10,400,000	$ 10,000,000.0
Employer matching contribution, percent of match	50.00%
Employer matching contribution, maximum, percent of employees' gross pay	6.00%
Number of US non-qualified deferred compensation plans | plan	2
Cost recognized	$ 3,600,000	3,600,000	3,800,000
Foreign Plan | Pension plan
Defined Benefit Plan Disclosure [Line Items]
Future amortization of gain (loss)	1,000,000.0
Future amortization of prior service cost (credit)	(100,000)
Accumulated benefit obligation	243,400,000	214,600,000
Employer contributions	5,300,000	4,400,000
Employer discretionary contribution amount	2,400,000	$ 2,300,000	$ 2,600,000
Foreign Plan | Pension plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in next fiscal year	$ 4,500,000
Foreign Plan | Pension plan | Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	68.00%
Foreign Plan | Pension plan | Diversified growth funds
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	27.00%
Foreign Plan | Pension plan | Diversified equity securities
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	5.00%
Foreign Plan | Pension plan | Real estate
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	0.00%