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Stockholders' Equity - Additional Information (Detail) - USD ($)
3 Months Ended 207 Months Ended
Aug. 24, 2020
Jul. 31, 2020
Jul. 26, 2019
Jul. 31, 2020
Apr. 24, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation expense related to equity awards   $ 435,000,000   $ 435,000,000  
Unrecognized compensation expense will be amortized on a straight-line basis over a weighted-average remaining period, in years   2 years 8 months 12 days      
Stock repurchase program, authorized amount   $ 13,600,000,000   $ 13,600,000,000  
Repurchase of common stock, shares   0   338,000,000  
Average price of common stock repurchased under repurchase program       $ 38.86  
Aggregate purchase price of common stock authorized under repurchase program   $ 0 $ 250,000,000 $ 13,100,000,000  
Remaining authorized amount for stock repurchases under repurchase program   $ 477,000,000   477,000,000  
Cash dividends declared, per common share   $ 0.48 $ 0.48    
Subsequent Event          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Cash dividends declared, per common share $ 0.48        
Cash dividend payable date Oct. 28, 2020        
Cash dividend record date Oct. 09, 2020        
Performance Based Restricted Stock Unit          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   3 years      
RSUs grant date fair value   $ 20,000,000   $ 20,000,000  
Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of Common stock issued to settle PBRSUs of target shares granted   0.00%      
Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of options outstanding   1,000,000   1,000,000 1,000,000
Percentage of Common stock issued to settle PBRSUs of target shares granted   200.00%