Net Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Numerator:
Net earnings	$ 267	$ 267
Denominator:
Weighted-average shares used to compute basic net EPS (in shares)	1,669	1,761
Dilutive effect of employee stock plans (in shares)	31	17
Weighted-average shares used to compute diluted net EPS (in shares)	1,700	1,778
Net earnings per share:
Basic (in dollars per share)	$ 0.16	$ 0.15
Diluted (in dollars per share)	$ 0.16	$ 0.15
Anti-dilutive weighted average stock awards (in shares)	7	64