CONDENSED CONSOLIDATE STATEMENT OF EQUITY - (PARENTHETICAL) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Statement of Stockholders' Equity [Abstract]
Tax related to shares issued	$ 1	$ 34	$ 1	$ 15
Common Stock, Dividends, Per Share, Declared	$ 0.180	$ 0.164	$ 0.540	$ 0.492