v3.10.0.1

Stockholders' Equity - Components of Accumulated Other Comprehensive Loss, Net of Taxes (Details) $ in Millions | 9 Months Ended
--- | ---
Jul. 31, 2018 USD ($)
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | $ 23,505
Balance at end of period | 23,462
Net unrealized gains (losses) on available-for-sale securities |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | 29
Other comprehensive (loss) income before reclassifications | (1)
Reclassifications of (gains) losses into earnings | (9)
Balance at end of period | 19
Net unrealized gains (losses) on cash flow hedges |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (48)
Other comprehensive (loss) income before reclassifications | 44
Reclassifications of (gains) losses into earnings | 67
Balance at end of period | 63
Unrealized components of defined benefit plans |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (2,690)
Other comprehensive (loss) income before reclassifications | (21)
Reclassifications of (gains) losses into earnings | 132
Balance at end of period | (2,579)
Cumulative translation adjustment |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (186)
Other comprehensive (loss) income before reclassifications | (37)
Reclassifications of (gains) losses into earnings | 0
Balance at end of period | (409)
Accumulated other comprehensive loss |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (2,895)
Other comprehensive (loss) income before reclassifications | (15)
Reclassifications of (gains) losses into earnings | 190
Balance at end of period | (2,906)
Separation and merger transactions | Cumulative translation adjustment |
Components of accumulated other comprehensive loss, net of taxes |
Adjustments related to transactions | (186)
Separation and merger transactions | Accumulated other comprehensive loss |
Components of accumulated other comprehensive loss, net of taxes |
Adjustments related to transactions | $ (186)

X
- Definition Other Comprehensive Income (Loss), Adjustments Related To Spin-off Transactions + References No definition available. + Details
Name: | hpe_OtherComprehensiveIncomeLossAdjustmentsRelatedToSpinoffTransactions
Namespace Prefix: | hpe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581 + Details
Name: | us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4590271-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4568740-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4568447-111683 + Details
Name: | us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedTranslationAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedOtherComprehensiveIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=hpe_EverettSpinCoInc.andSeattleSpinCoInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |