Taxes on Earnings (Details) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2024 USD ($) country	Apr. 30, 2023 USD ($)	Apr. 30, 2024 USD ($) country	Apr. 30, 2023 USD ($)
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	23.80%	(79.60%)	22.70%	(32.60%)
Income tax reconciliation other discrete items tax charges (credits)		$ (636)		$ (692)
Tax benefits related to internal reorganization		691		697
Tax benefits related to restructuring charges		36		66
Tax effects related to acquisition and divestiture charges		13		27
Tax effects related to other tax benefits				11
Tax charges related to audit settlements		62		58
Tax charges related to filing of tax returns		34		36
Effective income tax rate reconciliation, uncertain tax position charges, amount		8		15
Unrecognized tax benefits	$ 1,200		$ 1,200
Unrecognized tax benefits that would impact effective tax rate	849		849
Unrecognized increase in tax benefits change			36
Penalties and interest accrued	119	$ 86	$ 119	$ 86
Likelihood of no resolution period			12 months
Reasonably possible decrease in existing unrecognized tax benefits within the next 12 months	$ 25		$ 25
Other countries with income tax jurisdiction | country	60		60