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		9 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Pre-tax effect of derivative instruments in cash flow hedging relationships
Net revenue	$ 13,519	$ 13,196	$ 39,504	$ 39,901
Cost of revenue	(10,613)	(10,374)	(30,687)	(31,378)
Operating expenses	(1,966)	(1,870)	(5,990)	(6,081)
Interest and other, net	(113)	(16)	(410)	(357)
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	87	(68)	251	104
Cash flow hedges:
Pre-tax effect of derivative instruments in cash flow hedging relationships
Net revenue	13,519	13,196	39,504	39,901
Cost of revenue	(10,613)	(10,374)	(30,687)	(31,378)
Operating expenses	(1,966)	(1,870)	(5,990)	(6,081)
Interest and other, net	(113)	(16)	(410)	(357)
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	87	(68)	251	104
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	117	(37)	355	240
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	(33)	(33)	(109)	(142)
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	(1)	(4)	(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	$ 9	$ 9