Supplementary Financial Information - Schedule of Accounts Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Allowance for Doubtful Accounts Receivable
Balance at beginning of period	$ 83	$ 93	$ 107
Current-period allowance for credit losses	8	3	(2)
Deductions, net of recoveries	(8)	(13)	(12)
Balance at end of period	$ 83	$ 83	$ 93