Financial Instruments - Offsetting of Derivative Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Derivative assets
Gross Amount Recognized	$ 489	$ 1,090
Gross Amount Offset	0	0
Net Amount Presented	489	1,090
Gross Amounts Not Offset
Derivatives	178	290
Financial Collateral	291	616
Net Amount	20	184
Derivative liabilities
Gross Amount Recognized	272	374
Gross Amount Offset	0	0
Net Amount Presented	272	374
Gross Amounts Not Offset
Derivatives	178	290
Financial Collateral	89	86
Net Amount	$ 5	$ (2)
Period to collateralize	2 days