Supplementary Financial Information - Schedule of Transferred Trade Receivables Not Collected from Third Parties (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Trade Receivables Sold and Cash Received [Roll Forward]
Balance at beginning of period	$ 174	$ 173	$ 185	$ 131
Trade receivables sold	3,383	2,918	10,241	8,887
Cash receipts	(3,398)	(2,897)	(10,286)	(8,811)
Foreign currency and other	0	(5)	19	(18)
Balance at end of period	$ 159	$ 189	$ 159	$ 189