Financial Instruments - Narrative (Details) - USD ($)	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Derivative [Line Items]
Interest income	$ 78,000,000	$ 67,000,000	$ 46,000,000
Cost method and other equity investments	107,000,000	111,000,000
Collateralized arrangements in net liability position	$ 59,000,000	91,000,000
Period to collateralize	2 days
Notional amount	$ 20,253,000,000	$ 20,599,000,000
Gain expected to be reclassified from AOCI into earnings in next 12 months	$ 21,000,000
Cash flow hedges:
Derivative [Line Items]
Foreign currency maturity	12 months
Cash flow hedges: | Forward Contracts
Derivative [Line Items]
Notional amount	$ 500,000,000