Financial Instruments - Schedule of Information Related to the Potential Effect of Entity's Master Netting Agreements and Collateral Security Agreements (Details) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2023	Oct. 31, 2022
Derivative assets
Gross Amount Recognized	$ 254	$ 1,090
Gross Amount Offset	0	0
Net Amount Presented	254	1,090
Gross Amounts Not Offset
Derivatives	222	290
Financial Collateral	31	616
Net Amount	1	184
Derivative liabilities
Gross Amount Recognized	404	374
Gross Amount Offset	0	0
Net Amount Presented	404	374
Gross Amounts Not Offset
Derivatives	222	290
Financial Collateral	149	86
Net Amount	$ 33	$ (2)
Period to collateralize	2 days