Supplementary Financial Information - Trade Receivables Sold and Cash Received (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Receivables Sold but Not Collected from Third Party
Balance at beginning of year	$ 141	$ 185	$ 131
Trade receivables sold	12,200	13,391	12,028
Cash receipts	(12,063)	(13,449)	(11,942)
Foreign currency and other	6	14	(32)
Balance at end of year	$ 284	$ 141	$ 185