Net Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Numerator:
Net earnings from continuing operations	$ 660	$ 733	$ 1,310	$ 1,503
Net (loss) earnings from discontinued operations	(31)	278	(89)	874
Net earnings	$ 629	$ 1,011	$ 1,221	$ 2,377
Denominator:
Weighted-average shares used to compute basic net EPS	1,720,000,000	1,814,000,000	1,748,000,000	1,824,000,000
Dilutive effect of employee stock plans (in shares)	11,000,000	22,000,000	10,000,000	24,000,000
Weighted-average shares used to compute diluted net EPS	1,731,000,000	1,836,000,000	1,758,000,000	1,848,000,000
Basic net earnings (loss) per share:
Continuing operations	$ 0.38	$ 0.41	$ 0.75	$ 0.82
Discontinued operations	(0.01)	0.15	(0.05)	0.48
Basic net earnings per share	0.37	0.56	0.70	1.30
Diluted net earnings (loss) per share:
Continuing operations	0.38	0.40	0.75	0.81
Discontinued operations	(0.02)	0.15	(0.06)	0.48
Diluted net earnings per share	$ 0.36	$ 0.55	$ 0.69	$ 1.29
Anti-dilutive weighted average stock-based compensation awards	27,000,000	9,000,000	25,000,000	13,000,000
Net earnings per share:
Weighted average number of restricted stock outstanding			0	0