Net Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Numerator:
Net earnings from continuing operations	$ 611	$ 650
Net loss from discontinued operations	0	(58)
Net earnings	$ 611	$ 592
Denominator:
Weighted-average shares used to compute basic net EPS (shares)	1,704	1,776
Dilutive effect of employee stock plans (shares)	17	9
Weighted-average shares used to compute diluted net EPS (shares)	1,721	1,785
Basic net earnings (loss) per share:
Continuing operations (usd per share)	$ 0.36	$ 0.37
Discontinued operations (usd per share)	0.00	(0.04)
Total basic net earnings per share (usd per share)	0.36	0.33
Diluted net earnings (loss) per share:
Continuing operations (usd per share)	0.36	0.36
Discontinued operations (usd per share)	0.00	(0.03)
Total diluted net earnings per share (usd per share)	$ 0.36	$ 0.33
Anti-dilutive weighted average stock-based compensation awards (shares)	9	25