Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 26, 2020	Jan. 27, 2019
Numerator:
Net income	$ 892	$ 771
Denominator:
Weighted average common shares outstanding (in shares)	916	957
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	11	8
Denominator for diluted earnings per share (in shares)	927	965
Basic earnings per share (in dollars per share)	$ 0.97	$ 0.81
Diluted earnings per share (in dollars per share)	$ 0.96	$ 0.80
Potentially dilutive securities (in shares)	0	8