Taxes on Earnings - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Balance at beginning of year	$ 1,045	$ 829	$ 830
Increases:
For current year’s tax positions	61	26	62
For prior years’ tax positions	186	299	92
Decreases:
For prior years’ tax positions	(35)	(60)	(92)
Statute of limitations expirations	(8)	(5)	(9)
Settlements with taxing authorities	(112)	(44)	(54)
Balance at end of year	$ 1,137	$ 1,045	$ 829