Financial Instruments - Schedule of Pre-Tax Effect of Derivative Instruments in Cash Flow Hedging Relationships (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) recognized in Accumulated other comprehensive (loss) income on derivatives:	$ (623)	$ 299
Total amounts of income/(expense) line items in the statement of financial performance in which the effects of cash flow hedges are recorded	765	1,359
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	334	44
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	334	44
Cash flow hedges | Net revenue
Pre-tax effect of derivative instruments in cash flow hedging relationships
Total amounts of income/(expense) line items in the statement of financial performance in which the effects of cash flow hedges are recorded	13,828	17,028
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	386	57
Cash flow hedges | Cost of revenue
Pre-tax effect of derivative instruments in cash flow hedging relationships
Total amounts of income/(expense) line items in the statement of financial performance in which the effects of cash flow hedges are recorded	(11,019)	(13,643)
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	(54)	(14)
Cash flow hedges | Other operating expenses
Pre-tax effect of derivative instruments in cash flow hedging relationships
Total amounts of income/(expense) line items in the statement of financial performance in which the effects of cash flow hedges are recorded	(2,044)	(2,026)
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	(1)	1
Cash flow hedges | Interest and other, net
Pre-tax effect of derivative instruments in cash flow hedging relationships
Total amounts of income/(expense) line items in the statement of financial performance in which the effects of cash flow hedges are recorded	(181)	(32)
Gain/(loss) reclassified from Accumulated  other comprehensive (loss) income into earnings	3	0
Foreign currency contracts | Cash flow hedges
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) recognized in Accumulated other comprehensive (loss) income on derivatives:	(623)	280
Interest rate contracts | Cash flow hedges
Pre-tax effect of derivative instruments in cash flow hedging relationships
Gain/(loss) recognized in Accumulated other comprehensive (loss) income on derivatives:	$ 0	$ 19