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, 2025	Oct. 31, 2024
Derivative assets
Gross Amount Recognized	$ 66	$ 229
Gross Amount Offset	0	0
Net Amount Presented	66	229
Gross Amounts Not Offset
Derivatives	59	113
Financial Collateral	0	88
Net Amount	7	28
Derivative liabilities
Gross Amount Recognized	571	182
Gross Amount Offset	0	0
Net Amount Presented	571	182
Gross Amounts Not Offset
Derivatives	59	113
Financial Collateral	535	61
Net Amount	$ (23)	$ 8
Period to collateralize	2 days