v3.25.1
Fair value measurement - Fair Value of Assets and Liabilities (Details) - USD ($)
$ in Millions
May 03, 2025
Feb. 01, 2025
May 04, 2024
Carrying Value      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets $ 5.3 $ 5.6 $ 6.3
Liabilities (0.6) (0.7) (0.3)
US Treasury securities | Carrying Value      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 5.3 5.2 5.2
Foreign currency contracts | Carrying Value      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.4 0.1
Liabilities (0.6) (0.7) (0.3)
US government agency securities | Carrying Value      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.0 0.5
Corporate bonds and notes | Carrying Value      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.0 0.5
Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 5.3 5.2 5.2
Liabilities 0.0 0.0 0.0
Level 1 | US Treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 5.3 5.2 5.2
Level 1 | Foreign currency contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.0 0.0
Liabilities 0.0 0.0 0.0
Level 1 | US government agency securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.0 0.0
Level 1 | Corporate bonds and notes      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.0 0.0
Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.4 1.1
Liabilities (0.6) (0.7) (0.3)
Level 2 | US Treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.0 0.0
Level 2 | Foreign currency contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.4 0.1
Liabilities (0.6) (0.7) (0.3)
Level 2 | US government agency securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets 0.0 0.0 0.5
Level 2 | Corporate bonds and notes      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets $ 0.0 $ 0.0 $ 0.5