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Supplemental Financial Information - Product Warranty Liabilities (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Oct. 29, 2021
Oct. 30, 2020
Oct. 29, 2021
Oct. 30, 2020
Apr. 30, 2021
Movement In Standard Product Warranty Accrual [Roll Forward]          
Balance at beginning of period $ 31 $ 37 $ 32 $ 41  
Expense accrued during the period 2 4 6 5  
Warranty costs incurred (5) (6) (10) (11)  
Balance at end of period 28 35 28 35  
Standard Product Warranty Accrual, Balance Sheet Classification [Abstract]          
Accrued expenses 19   19   $ 21
Other long-term liabilities 9   9   11
Total warranty liabilities $ 28 $ 35 $ 28 $ 35 $ 32