Financial Instruments - Schedule of Pre-Tax Effect of Derivative Instruments in Cash Flow Hedging Relationships Included in Earnings (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/ (loss) reclassified from Accumulated other comprehensive loss into earnings	$ (98)	$ 274	$ 84
Cash flow hedges:
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/ (loss) reclassified from Accumulated other comprehensive loss into earnings	(98)	274	84
Cash flow hedges: | Products net revenue
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/ (loss) reclassified from Accumulated other comprehensive loss into earnings	(32)	408	243
Cash flow hedges: | Cost of products net revenue
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/ (loss) reclassified from Accumulated other comprehensive loss into earnings	(81)	(142)	(167)
Cash flow hedges: | Operating expenses
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/ (loss) reclassified from Accumulated other comprehensive loss into earnings	2	(4)	(4)
Cash flow hedges: | Interest and other, net
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/ (loss) reclassified from Accumulated other comprehensive loss into earnings	$ 13	$ 12	$ 12