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Retirement Plans - Fair Value Measurement Plan Assets (Details) - USD ($)
$ in Millions
Jan. 29, 2021
Jan. 31, 2020
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, amount $ 55 $ 53
Equity | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, amount 37 34
Fixed income | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, amount 8 9
Guaranteed deposit account | Significant Unobservable Inputs (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, amount 3 2
Subtotal | Fair Value, Inputs, Level 1, 2 and 3    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, amount 48 45
Collective trust - fixed income | Measured at NAV    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, amount $ 7 $ 8