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, 2022	Oct. 31, 2021
Derivative assets
Gross Amount Recognized	$ 490	$ 282
Gross Amount Offset	0	0
Net Amount Presented	490	282
Gross Amounts Not Offset
Derivatives	153	160
Financial Collateral	321	65
Net Amount	16	57
Derivative liabilities
Gross derivative liability	194	227
Gross Amount Offset	0	0
Net Amount Presented	194	227
Gross Amounts Not Offset
Derivatives	153	160
Financial Collateral	33	64
Net Amount	$ 8	$ 3
Period to collateralize	2 days