Supplementary Financial Information - Schedule of Trade Receivables Sold and Cash Received (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Receivables Sold but Not Collected from Third Party
Balance at beginning of year	$ 284	$ 141	$ 185
Trade receivables sold	11,830	12,200	13,391
Cash receipts	(12,006)	(12,063)	(13,449)
Foreign currency and other	9	6	14
Balance at end of year	$ 117	$ 284	$ 141