Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Apr. 26, 2019	Apr. 27, 2018
Statement of Financial Position [Abstract]
Allowances for accounts receivable	$ 190	$ 193
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	2,600,000,000	2,600,000,000
Common stock, issued (in shares)	1,340,697,595	1,354,218,154
Common stock, outstanding (in shares)	1,340,697,595	1,354,218,154

Amount of allowance for credit loss on accounts receivable, classified as current.

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