Supplementary Financial Information - Supplier Finance Programs (Narrative) (Details) - USD ($) $ in Billions	Apr. 30, 2025	Oct. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Payment terms offered by HP	30 days
Obligations outstanding	$ 7.7	$ 7.8
Amounts owed to participating financial institutions	$ 0.6	$ 0.9

Amount of obligation for supplier finance program.

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