STOCKHOLDER"S EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Dividends Paid
Cash dividends paid per common share	$ 0.18	$ 0.164	$ 0.540	$ 0.492
Aggregate amount of cash dividends paid	$ 56	$ 51	$ 167	$ 155
Dividends Declared
Dividends Declared per share	$ 0.180	$ 0.164	$ 0.540	$ 0.492
Aggregate Dividends declared (Cash)	$ 56	$ 51	$ 167	$ 155

Aggregate dividends paid during the period for each share of common stock outstanding.

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-Name Accounting Standards Codification
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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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