Net Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Numerator:
Net earnings	$ 7,074	$ 8,761	$ 7,660
Denominator:
Weighted average shares used to compute basic EPS (in shares)	2,094	2,319	2,388
Dilutive effect of employee stock plans (in shares)	34	53	49
Weighted average shares used to compute diluted EPS (in shares)	2,128	2,372	2,437
Net earnings per share:
Basic (in dollars per share)	$ 3.38	$ 3.78	$ 3.21
Diluted (in dollars per share)	$ 3.32	$ 3.69	$ 3.14
Options with exercise price greater than market price of stock
Other information related to EPS computation
Antidilutive securities excluded from the calculation of EPS (in shares)	25	5	85
Stock options combined exercise price unamortized fair value excess tax benefits greater than market price
Other information related to EPS computation
Antidilutive securities excluded from the calculation of EPS (in shares)	1	2	2