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Fair Value Measurements - Fair Value of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($)
$ in Millions
Apr. 29, 2023
Jan. 28, 2023
Aug. 31, 2022
Apr. 30, 2022
Assets        
Adjusted Cost $ 256.1 $ 254.0   $ 5.2
Unrealized Gains 0.4 0.0   0.0
Unrealized Losses 0.0 (0.9)   0.0
Fair Value 256.5 253.1   5.2
Liabilities        
Total liabilities 7.1 6.3   0.5
Level 1 | US Government Agencies Debt Securities        
Assets        
Adjusted Cost 254.9 253.5    
Unrealized Gains 0.4 0.0    
Unrealized Losses 0.0 (0.9)    
Fair Value 255.3 252.6 $ 250.0  
Level 2        
Liabilities        
Foreign currency contracts 6.7 5.9    
Nonqualified deferred compensation 0.4 0.4   0.5
Level 2 | Debt Security, Government, Non-US        
Assets        
Adjusted Cost 0.7     4.7
Unrealized Gains 0.0     0.0
Unrealized Losses 0.0     0.0
Fair Value 0.7     4.7
Level 2 | Company Owned Life Insurance        
Assets        
Adjusted Cost 0.5 0.5   0.5
Unrealized Gains 0.0 0.0   0.0
Unrealized Losses 0.0 0.0   0.0
Fair Value $ 0.5 $ 0.5   $ 0.5