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NET INCOME PER SHARE (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Apr. 30, 2016
Apr. 30, 2015
Numerator:        
Income from continuing operations $ 91 $ 92 $ 214 $ 185
Loss from discontinued operations 0 (5) 0 (35)
Net income $ 91 $ 87 $ 214 $ 150
Denominators:        
Basic weighted-average shares (in shares) 326,000,000 334,000,000 327,000,000 335,000,000
Potential common shares - stock options and other employee stock plans (in shares) 2,000,000 3,000,000 3,000,000 2,000,000
Diluted weighted average shares (in shares) 328,000,000 337,000,000 330,000,000 337,000,000
Options with exercise price greater than average market price        
Antidilutive Securities Excluded from EPS Computation        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 2,100,000 66,200 1,700,000 672,500
Stock Options, LTPP and restricted stock combined exercise price, unamortized fair value, excess tax benefits or shortfalls greater than average market price        
Antidilutive Securities Excluded from EPS Computation        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 2,600 1,400,000 3,500 690,200