v3.26.1
Employee benefit plans - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 31, 2026
Feb. 01, 2025
Feb. 03, 2024
Defined Contribution Plan Disclosure [Line Items]      
Deferred compensation plan assets $ 34.8 $ 31.0  
Deferred Compensation Liability, Current and Noncurrent 40.1 42.1  
Life Insurance      
Defined Contribution Plan Disclosure [Line Items]      
Deferred compensation plan assets 4.3 4.4  
Other Pension, Postretirement and Supplemental Plans      
Defined Contribution Plan Disclosure [Line Items]      
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 5.4 7.3 $ 5.4
US 401k Plan | Pension plan      
Defined Contribution Plan Disclosure [Line Items]      
Employer matching contribution, percent of match 50.00%    
Employer matching contribution, maximum, percent of employees' gross pay 6.00%    
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 12.7 12.9 13.6
UK Defined Contribution Plan | Pension plan      
Defined Contribution Plan Disclosure [Line Items]      
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 2.4 $ 2.1 $ 2.4