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CONDENSED CONSOLIDATE STATEMENT OF EQUITY - (PARENTHETICAL) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2021 | Jul. 31, 2020
Statement of Stockholders' Equity [Abstract] |  |  |  |
Dividends Declared per share | $ 0.194 | $ 0.18 | $ 0.582 | $ 0.54
Tax related to shares issued | $ 1 | $ 1 | $ 74 | $ 34

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