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NET INCOME PER SHARE (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2017
Jul. 31, 2016
Jul. 31, 2017
Jul. 31, 2016
Numerator:        
Net income $ 175 $ 124 $ 507 $ 336
Denominators:        
Basic weighted-average shares (in shares) 321,000,000 325,000,000 322,000,000 326,000,000
Potential common shares - stock options and other employee stock plans (in shares) 5,000,000 3,000,000 3,000,000 3,000,000
Diluted weighted average shares (in shares) 326,000,000 328,000,000 325,000,000 329,000,000
Options with exercise price greater than average market price        
Denominators:        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 0 0 0 1,100,000
Stock Options, LTPP and restricted stock combined exercise price, unamortized fair value, excess tax benefits or shortfalls greater than average market price        
Denominators:        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 0 0 300 306,100