INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2021	Jan. 31, 2020
Income Tax Disclosure
Provision (benefit) for income taxes	$ 24	$ 22
Effective income tax rate	7.70%	10.00%
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	$ 16
Excess tax benefit from stock based compensation	$ (20)	$ (13)

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

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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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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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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