Supplementary Financial Information - Accounts Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Allowance for Doubtful Accounts Receivable
Balance at beginning of period	$ 107	$ 111	$ 122
Current-period allowance for credit losses	(2)	7	5
Deductions, net of recoveries	(12)	(11)	(16)
Balance at end of period	$ 93	$ 107	$ 111