Taxes on Earnings (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023 USD ($) country	Jul. 31, 2022 USD ($)	Jul. 31, 2023 USD ($) country	Jul. 31, 2022 USD ($)
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	18.20%	5.40%	(9.80%)	14.20%
Income tax reconciliation other discrete items tax charges (credits)	$ 32	$ 150	$ 724	$ 111
Tax effects of internal reorganization		87	697	87
Tax benefits related to restructuring charges	16	3	82	31
Tax benefits related to filing of tax returns in various jurisdictions	51	167	15	150
Effective income tax rate reconciliation, business combination, amount	10		37
Tax benefits related to audit settlements	2	10	60	19
Effective income tax rate reconciliation, uncertain tax position charges, amount	17	98	32	93
Extinguishment of debt, gain (loss), income tax	27		25
Tax charges related to foreign withholding taxes				55
Tax benefits related to share-based payment arrangement				32
Unrecognized tax benefits	1,200		1,200
Unrecognized tax benefits that would impact the effective tax rate	861		861
Unrecognized tax benefits change			106
Penalties and interest accrued	98	$ 76	$ 98	$ 76
Likelihood of no resolution period			12 months
Reasonably possible decrease in existing unrecognized tax benefits within the next 12 months	$ 44		$ 44
Other countries with income tax jurisdiction | country	60		60