Supplementary Financial Information - Supplier Finance Programs (Narrative) (Details) - USD ($) $ in Billions	Jul. 31, 2025	Oct. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Payment terms offered by HP	30 days
Obligations outstanding	$ 8.6	$ 7.8
Amounts owed to participating financial institutions	0.5	0.9
Supplier finance program, obligation elected to sell	$ 0.1	$ 0.1

Amount of obligation for supplier finance program.

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