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NET INCOME (LOSS) PER SHARE (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Numerator:
Net income	$ 719	$ 1,071	$ 316
Denominator:
Basic weighted average shares	309	314	321
Potential common shares - stock options and other employeee stock plans	3	4	4
Diluted weighted average shares	312	318	325
Share-based awards issued
Total number of share-based awards issued (in shares)	2	2	2

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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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