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Revenue - Summary of Activity Related to Deferred Commissions (Detail) - USD ($)
$ in Millions
6 Months Ended
Oct. 30, 2020
Oct. 25, 2019
Deferred Revenue Disclosure [Abstract]    
Balance at beginning of period $ 156 $ 172
Additions 57 32
Expense recognized during the period (45) (50)
Balance at end of period $ 168 $ 154