Taxes on Earnings - Deferred Tax Asset Valuation Allowance (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Valuation Allowance [Line Items]
Valuation allowance for deferred tax assets	$ 7,592	$ 7,749	$ 7,976	$ 7,930
Increase (decrease) in valuation allowances	(157)	(227)	46
Deferred tax asset valuation allowance
Valuation Allowance [Line Items]
Valuation allowance for deferred tax assets	$ 7,600	$ 7,700	$ 8,000