Financial Instruments - Schedule of Pre-Tax Effect of Derivative Instruments in Cash Flow Hedging Relationships Included in Earnings (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	$ 43	$ 159
Cash flow hedges:
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	43	159
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) income into earnings	67	199
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) income into earnings	(27)	(40)
Cash flow hedges: | Operating expenses
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	0	(3)
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) income into earnings	$ 3	$ 3