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CONDENSED CONSOLIDATE STATEMENT OF EQUITY - (PARENTHETICAL) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
Statement of Stockholders' Equity [Abstract] |  |  |  |
Dividends Declared per share | $ 0.194 | $ 0.18 | $ 0.388 | $ 0.36
Tax related to shares issued | $ 1 | $ 0 | $ 73 | $ 33

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