Taxes on Earnings - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Unrecognized Tax Benefits
Balance at beginning of year	$ 1,137	$ 1,045	$ 829
Increases:
For current year’s tax positions	82	61	26
For prior years’ tax positions	52	186	299
Decreases:
For prior years’ tax positions	(9)	(35)	(60)
Statute of limitations expirations	(33)	(8)	(5)
Settlements with taxing authorities	(12)	(112)	(44)
Balance at end of year	$ 1,217	$ 1,137	$ 1,045