Supplementary Financial Information - Schedule of Trade Receivables Sold and Cash Received (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Trade Receivables Sold and Cash Received [Roll Forward]
Balance at beginning of period	$ 141	$ 185
Trade receivables sold	3,298	3,679
Cash receipts	(3,232)	(3,753)
Foreign currency and other	5	17
Balance at end of period	$ 212	$ 128