Supplementary Financial Information - Accounts Receivables (Details) $ in Millions	3 Months Ended
	Jan. 31, 2023 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 107
Benefit of allowance for credit losses	(16)
Deductions, net of recoveries	(2)
Balance at end of period	$ 89