Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2021	Jan. 26, 2020
Numerator:
Net income	$ 1,130	$ 892
Denominator:
Weighted average common shares outstanding (in shares)	915	916
Effect of dilutive restricted stock units and employee stock purchase plan shares (in shares)	10	11
Denominator for diluted earnings per share (in shares)	925	927
Basic earnings per share (in dollars per share)	$ 1.23	$ 0.97
Diluted earnings per share (in dollars per share)	$ 1.22	$ 0.96
Potentially dilutive securities (in shares)	0	0