Supplementary Financial Information - Accounts Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Allowance for Doubtful Accounts Receivable
Balance at beginning of period	$ 111	$ 122	$ 111
Current-period allowance for credit losses	7	5	62
Deductions, net of recoveries	(11)	(16)	(51)
Balance at end of period	$ 107	$ 111	$ 122