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NET INCOME (LOSS) PER SHARE (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Numerator:
Net income	$ 1,071	$ 316	$ 684
Denominator:
Basic weighted average shares	314	321	322
Potential common shares - stock options and other employeee stock plans	4	4	4
Diluted weighted average shares	318	325	326
Share-based awards issued
Total number of share-based awards issued (in shares)	2	2	3

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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