Financial Instruments - Schedule of Information Related to the Potential Effect of Entity's Master Netting Agreements and Collateral Security Agreements (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2022	Oct. 31, 2021
Derivative assets
Gross Amount Recognized	$ 1,009	$ 282
Gross Amount Offset	0	0
Net Amount Presented	1,009	282
Gross Amounts Not Offset
Derivatives	234	160
Financial Collateral	654	65
Net Amount	121	57
Derivative liabilities
Gross Amount Recognized	305	227
Gross Amount Offset	0	0
Net Amount Presented	305	227
Gross Amounts Not Offset
Derivatives	234	160
Financial Collateral	86	64
Net Amount	$ (15)	$ 3
Period to collateralize	2 days