Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 27, 2019	Jan. 28, 2018
Numerator:
Net income	$ 771	$ 165
Denominator:
Weighted average common shares outstanding (in shares)	957	1,056
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	8	15
Denominator for diluted earnings per share (in shares)	965	1,071
Basic earnings per share (in dollars per share)	$ 0.81	$ 0.16
Diluted earnings per share (in dollars per share)	$ 0.80	$ 0.15
Potentially dilutive securities (in shares)	8	0