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NET INCOME PER SHARE (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Jul. 31, 2016
Jul. 31, 2015
Numerator:        
Income from continuing operations $ 124 $ 113 $ 336 $ 298
Loss from discontinued operations 0 (2) 0 (37)
Net income $ 124 $ 111 $ 336 $ 261
Denominators:        
Basic weighted-average shares (in shares) 325,000,000 332,000,000 326,000,000 334,000,000
Potential common shares - stock options and other employee stock plans (in shares) 3,000,000 2,000,000 3,000,000 2,000,000
Diluted weighted average shares (in shares) 328,000,000 334,000,000 329,000,000 336,000,000
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) 0 1,200,000 1,100,000 856,900
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) 0 80,900 306,100 487,100