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Derivative Instruments - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Oct. 24, 2020
Jul. 25, 2020
Derivative [Line Items]    
Right of set-off, reduction in derivative liabilities $ 20 $ 10
Right of set-off, reduction in derivative assets 20 10
Cash collateral, assets 157 173
Net derivative asset $ 3 $ 8
Cash flow hedges    
Derivative [Line Items]    
Derivative average remaining maturity 24 months  
Net investment hedges    
Derivative [Line Items]    
Derivative average remaining maturity 6 months