Net Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Numerator:
Earnings from continuing operations	$ 650	$ 770
(Loss) earnings from discontinued operations	(58)	596
Net earnings	$ 592	$ 1,366
Denominator:
Weighted-average shares used to compute basic net EPS	1,776,000,000	1,833,000,000
Dilutive effect of employee stock plans (in shares)	9,000,000	28,000,000
Weighted-average shares used to compute diluted net EPS	1,785,000,000	1,861,000,000
Basic net earnings (loss) per share:
Continuing operations	$ 0.37	$ 0.42
Discontinued operations	(0.04)	0.33
Basic net earnings per share	0.33	0.75
Diluted net earnings (loss) per share:
Continuing operations	0.36	0.41
Discontinued operations	(0.03)	0.32
Diluted net earnings per share	$ 0.33	$ 0.73
Net earnings per share:
Weighted Average Number of Shares, Restricted Stock	0	0
Anti dilutive weighted-average options (in shares)	25,000,000	17,000,000