Net Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Numerator:
Net earnings	$ 854	$ 985	$ 3,231	$ 3,683
Denominator:
Weighted-average shares used to compute basic net EPS	1,805,000,000	1,870,000,000	1,817,000,000	1,889,000,000
Dilutive effect of employee stock plans (in shares)	23,000,000	29,000,000	25,000,000	24,000,000
Weighted-average shares used to compute diluted net EPS	1,828,000,000	1,899,000,000	1,842,000,000	1,913,000,000
Net earnings per share:
Basic (in dollars per share)	$ 0.47	$ 0.53	$ 1.78	$ 1.95
Diluted (in dollars per share)	$ 0.47	$ 0.52	$ 1.75	$ 1.93
Anti dilutive weighted-average options (in shares)	10,000,000	18,000,000	12,000,000	27,000,000
Weighted average number of restricted stock outstanding			0