Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 27, 2019
Numerator:
Net income	$ 5,888	$ 3,619	$ 2,706
Denominator:
Weighted average common shares outstanding (in shares)	910	916	937
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	9	7	8
Denominator for diluted earnings per share (in shares)	919	923	945
Earnings per share: basic (in dollars per share)	$ 6.47	$ 3.95	$ 2.89
Diluted earnings per share (in dollars per share)	$ 6.40	$ 3.92	$ 2.86
Potentially dilutive securities (in shares)	0	0	3