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, 2023	Oct. 31, 2022
Derivative assets
Gross Amount Recognized	$ 288	$ 1,090
Gross Amount Offset	0	0
Net Amount Presented	288	1,090
Gross Amounts Not Offset
Derivatives	242	290
Financial Collateral	39	616
Net Amount	7	184
Derivative liabilities
Gross Amount Recognized	425	374
Gross Amount Offset	0	0
Net Amount Presented	425	374
Gross Amounts Not Offset
Derivatives	242	290
Financial Collateral	165	86
Net Amount	$ 18	$ (2)
Period to collateralize	2 days