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INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Percent	4.70%	20.10%	17.20%	16.90%
Provision for income taxes	$ 9	$ 40	$ 85	$ 86
Net Discrete Expense (Benefit)	$ (10)	$ 3	$ (5)	$ 32

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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