CONDENSED CONSOLIDATE STATEMENT OF EQUITY - (PARENTHETICAL) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Statement of Stockholders' Equity [Abstract]
Tax related to shares issued	$ 0	$ 1	$ 33	$ 14
Common Stock, Dividends, Per Share, Declared	$ 0.180	$ 0.164	$ 0.360	$ 0.328