Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended												12 Months Ended
	Oct. 25, 2020	Jul. 26, 2020	Apr. 26, 2020	Jan. 26, 2020	Oct. 27, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018	Oct. 29, 2017
Cash dividend declared (usd per share)	$ 0.22	$ 0.22	$ 0.22	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.10	$ 0.87	$ 0.83	$ 0.70
Retained earnings	$ 27,209				$ 24,386								$ 27,209	$ 24,386
Cumulative Effect, Period of Adoption, Adjustment
Retained earnings									$ 6						$ 6	$ 281