NET INCOME PER SHARE (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Denominators:
Basic weighted-average shares (in shares)	345,000,000	348,000,000	346,000,000	348,000,000
Potentially dilutive common stock equivalents - stock options and other employee stock plans (in shares)	4,000,000	6,000,000	5,000,000	5,000,000
Diluted weighted average shares (in shares)	349,000,000	354,000,000	351,000,000	353,000,000
Numerator:
Net Income	$ 166	$ 255	$ 345	$ 485
Options with exercise price greater than average market price [Member]
Antidilutive Securities Excluded from EPS Computation
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,600	5,600	5,600	862,000
Stock Options, LTPP and restricted stock combined exercise price, unamortized fair value, excess tax benefits or shortfalls greater than average market price [Member] [Member]
Antidilutive Securities Excluded from EPS Computation
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	32,000	1,400,000	26,000	1,700,000