Name:	hpq_AdvanceRoyaltyProceedsReceivedFromIntercompanyLicensingArrangements
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Relates to tax liabilities distributed to former entity related solely to uncertain tax positions.

No definition available.

Name:	hpq_IncomeTaxDistributedRelatedToUncertainTaxPositionsAssociatedWithFormerEntity
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The change in tax benefits that would be recorded by the entity related to tax refund claims, tax carryforwards and carrybacks if the Notice of Deficiency were sustained.

No definition available.

Name:	hpq_IncomeTaxExaminationIncreaseDecreaseInTaxTaxExpenseAndBenefitFromPriorYear
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The portion of the difference, between total income tax expense or (benefit) as reported in the Income Statement for the year/accounting period and the expected income tax expense or (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to various other discrete items.

No definition available.

Name:	hpq_IncomeTaxReconciliationOtherDiscreteItemsTaxCharges
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in past uncertain tax position contingencies, whether recorded or adjusted, during the period.

No definition available.

Name:	hpq_IncomeTaxReconciliationPastUncertainTaxPosition
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

No definition available.

Name:	hpq_IncomeTaxReconciliationProvisionToReturnAdjustment
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The portion of the difference, between total income tax benefit as reported in the Income Statement for the year/accounting period and the expected income tax benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to restructuring charges.

No definition available.

Name:	hpq_IncomeTaxReconciliationRestructuringCharges
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The discrete income tax benefit recorded due to the retroactive extension of the research and development tax credit.

No definition available.

Name:	hpq_IncomeTaxReconciliationRetroactiveTaxCredit
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

No definition available.

Name:	hpq_IncomeTaxReconciliationSeparationCosts
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the number of other countries in which the entity is subject to income taxes.

No definition available.

Name:	hpq_OtherCountriesWithIncomeTaxJurisdictionNumber
Namespace Prefix:	hpq_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Receivable for certain tax liabilities indemnified under the Tax Matters Agreement as of the reporting date.

No definition available.

Name:	hpq_ReceivableForCertainTaxMatters
Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the royalty revenue recognition term.

No definition available.

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

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

Name:	us-gaap_EffectiveIncomeTaxRateContinuingOperations
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

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

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

Name:	us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

Name:	us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

Name:	us-gaap_UnrecognizedTaxBenefits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The net amount of all increases and decreases in unrecognized tax benefits for the period.

Name:	us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.