Supplementary Financial Information - Schedule of Transferred Trade Receivables Not Collected from Third Parties (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Trade Receivables Sold and Cash Received [Roll Forward]
Balance at beginning of period	$ 131	$ 188
Trade receivables sold	2,967	3,544
Cash receipts	(2,973)	(3,534)
Foreign currency and other	(4)	9
Balance at end of period	$ 121	$ 207