v3.25.3

Retirement and Post-Retirement Benefit Plans - Post-Retirement Benefit Plans (Narrative) (Details)	12 Months Ended
	Oct. 31, 2025
Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Eligible age for HP retirement medical savings account plan	45 years

X

- Definition

This element represents the age for eligibility under HP Retirement Medical Savings Account Plan.

+ References

No definition available.

+ Details

Name:	hpq_EligibleAgeForHPRetirementMedicalSavingsAccountPlan
Namespace Prefix:	hpq_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: