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Segment Geographic and Significant Customer Information - Schedule of Property and Equipment Net by Geographic Areas (Detail) - USD ($)
$ in Millions
Apr. 24, 2020
Apr. 26, 2019
Segment Reporting, Asset Reconciling Item [Line Items]    
Property and equipment $ 727 $ 759
U.S.    
Segment Reporting, Asset Reconciling Item [Line Items]    
Property and equipment 540 572
International    
Segment Reporting, Asset Reconciling Item [Line Items]    
Property and equipment $ 187 $ 187