NET INCOME PER SHARE (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Numerator:
Net income (loss)	$ (320)	$ 168
Denominators:
Basic weighted-average shares (in shares)	323.0	322.0
Potential common shares - stock options and other employee stock plans (in shares)	0.0	4.0
Diluted weighted average shares (in shares)	323.0	326.0
Antidilutive securities excluded from computation of Earnings Per Share, amount (in shares)	6.7	0.0