Amount of outstanding debt securities repurchase plan authorized.

No definition available.

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

- Definition

The amount of debt instrument that was covered under the interest rate swaps to reduce the exposure of changes in fair value resulting from changes in interest rates.

+ References

No definition available.

+ Details

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

- Definition

Number of debt tender offers.

+ References

No definition available.

+ Details

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

- Definition

Represents the number of senior notes issued by the entity.

+ References

No definition available.

+ Details

Name:	hpq_NumberOfSeniorNotesIssued
Namespace Prefix:	hpq_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase.

+ References

No definition available.

+ Details

Name:	us-gaap_GainLossOnRepurchaseOfDebtInstrument
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

+ Details

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

Borrowings (Details 3) $ in Millions			3 Months Ended	12 Months Ended
Borrowings (Details 3) $ in Millions	Nov. 04, 2015 USD ($)	Oct. 09, 2015 USD ($) item	Oct. 31, 2015 USD ($)	Oct. 31, 2015 USD ($)	Sep. 30, 2015 USD ($) item
Hewlett Packard Enterprise Senior Notes
Debt instruments
Number of series of senior unsecured notes \| item		9
Aggregate principal amount		$ 14,600
Unsecured fixed rate notes
Debt instruments
Aggregate principal amount		14,000
Unsecured floating rate notes
Debt instruments
Aggregate principal amount		600
Interest Rate Swap \| Unsecured fixed rate notes
Debt instruments
Interest Rate Swap, Exposure Coverage		9,500
Other Assets \| Hewlett Packard Enterprise Senior Notes
Debt instruments
Issuance costs		$ 54
The Tender Offers
Extinguishment of Debt
Debt securities repurchase authorized amount					$ 8,850
Number of separate offers \| item					2
The Tender Offers \| Early Debt Redemption
Extinguishment of Debt
Loss from early extinguishment	$ 66			$ 167
Early debt redeemed and repaid	$ 2,100		$ 6,600
2.20% Notes due Dec. 2015
Extinguishment of Debt
Interest rate (as a percent)					2.20%
2.65% Notes due June 2016
Extinguishment of Debt
Interest rate (as a percent)					2.65%
3.00% Notes due Sept. 2016
Extinguishment of Debt
Interest rate (as a percent)					3.00%
3.30% Notes due Dec. 2016
Extinguishment of Debt
Interest rate (as a percent)					3.30%
5.40% Notes due March 2017
Extinguishment of Debt
Interest rate (as a percent)					5.40%
2.60% Notes due Sept. 2017
Extinguishment of Debt
Interest rate (as a percent)					2.60%
5.50% Notes due March 2018
Extinguishment of Debt
Interest rate (as a percent)					5.50%
2.75% Notes due Jan. 2019
Extinguishment of Debt
Debt securities repurchase authorized amount					$ 2,300
Interest rate (as a percent)					2.75%
3.75% Notes due Dec. 2020
Extinguishment of Debt
Interest rate (as a percent)					3.75%
4.30% Notes due June 2021
Extinguishment of Debt
Interest rate (as a percent)					4.30%
4.375% Notes due Sept. 2021
Extinguishment of Debt
Interest rate (as a percent)					4.375%
4.650% Notes due Dec. 2021
Extinguishment of Debt
Interest rate (as a percent)					4.65%
4.050% Notes due Sept. 2022
Extinguishment of Debt
Interest rate (as a percent)					4.05%
6.00% Notes due Sept. 2041
Extinguishment of Debt
Interest rate (as a percent)					6.00%