Supplementary Financial Information - Trade Receivables Sold and Cash Received (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Receivables Sold but Not Collected from Third Party
Balance at beginning of year	$ 131	$ 188	$ 235
Trade receivables sold	12,028	11,976	10,474
Cash receipts	(11,942)	(12,035)	(10,526)
Foreign currency and other	(32)	2	5
Balance at end of year	$ 185	$ 131	$ 188