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STOCKHOLDERS' EQUITY (Issuance of Common Stock) (Details) - USD ($) shares in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Statement of Stockholders' Equity [Abstract] |  |  |  |
Stock Issued During Period, Shares, New Issues | 13 |  |  |
Issuance of common stock under public offering |  | $ 0 | $ 0 | $ 444

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