Financial Instruments - Schedule of Information Related to the Potential Effect of Entity's Master Netting Agreements and Collateral Security Agreements (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2023	Oct. 31, 2022
Derivative assets
Gross Amount Recognized	$ 338	$ 1,090
Gross Amount Offset	0	0
Net Amount Presented	338	1,090
Gross Amounts Not Offset
Derivatives	288	290
Financial Collateral	24	616
Net Amount	26	184
Derivative liabilities
Gross Amount Recognized	560	374
Gross Amount Offset	0	0
Net Amount Presented	560	374
Gross Amounts Not Offset
Derivatives	288	290
Financial Collateral	264	86
Net Amount	$ 8	$ (2)
Period to collateralize	2 days