Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 29, 2017	Jan. 31, 2016
Numerator:
Net income	$ 703	$ 286
Denominator:
Weighted average common shares outstanding (in shares)	1,078	1,146
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)	1,089	1,154
Basic and diluted (in dollars per share)	$ 0.65	$ 0.25
Potentially dilutive securities (in shares)	0	2