Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 30, 2017	Jul. 31, 2016	Jul. 30, 2017	Jul. 31, 2016
Numerator:
Net income	$ 925	$ 505	$ 2,452	$ 1,111
Denominator:
Weighted average common shares outstanding (in shares)	1,071	1,083	1,076	1,115
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	12	10	11	8
Denominator for diluted earnings per share (in shares)	1,083	1,093	1,087	1,123
Basic earnings per share (in dollars per share)	$ 0.86	$ 0.47	$ 2.28	$ 1.00
Diluted earnings per share (in dollars per share)	$ 0.85	$ 0.46	$ 2.26	$ 0.99
Potentially dilutive securities (in shares)	0	0	0	0