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Income Taxes - Income Before Income Taxes (Detail) - USD ($)
$ in Millions
12 Months Ended
Apr. 30, 2021
Apr. 24, 2020
Apr. 26, 2019
Income Tax Disclosure [Abstract]      
Domestic $ 433 $ 379 $ 678
Foreign 529 565 590
Income before income taxes $ 962 $ 944 $ 1,268