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Supplementary Financial Information - Supplier Finance Programs (Narrative) (Details) - USD ($) $ in Billions | Jul. 31, 2025 | Oct. 31, 2024
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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

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