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		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Pre-tax effect of derivative instruments in cash flow hedging relationships
Net revenue	$ 12,800	$ 12,907	$ 25,985	$ 26,705
Cost of revenue	(9,777)	(9,993)	(20,074)	(21,004)
Operating expenses	(2,071)	(2,167)	(4,024)	(4,211)
Interest and other, net	(155)	(160)	(297)	(341)
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	5	(162)	164	172
Cash flow hedges
Pre-tax effect of derivative instruments in cash flow hedging relationships
Net revenue	12,800	12,907	25,985	26,705
Cost of revenue	9,777	9,993	(20,074)	(21,004)
Operating expenses	2,071	2,167	(4,024)	(4,211)
Interest and other, net	(155)	(160)	(297)	(341)
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	5	(162)	164	172
Cash flow hedges | Net revenue
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	39	(109)	238	277
Cash flow hedges | Cost of revenue
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	(36)	(55)	(76)	(109)
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	(1)	(1)	(4)	(2)
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	$ 6	$ 6