Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	May 01, 2016	Apr. 30, 2017	May 01, 2016
Numerator:
Net income	$ 824	$ 320	$ 1,527	$ 606
Denominator:
Weighted average common shares outstanding (in shares)	1,078	1,113	1,078	1,130
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	9	6	10	7
Denominator for diluted earnings per share (in shares)	1,087	1,119	1,088	1,137
Basic earnings per share (in dollars per share)	$ 0.76	$ 0.29	$ 1.42	$ 0.54
Diluted earnings per share (in dollars per share)	$ 0.76	$ 0.29	$ 1.40	$ 0.53
Potentially dilutive securities (in shares)	0	5	0	6