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Segment Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2018 USD ($) segment | Oct. 31, 2017 USD ($)
Segment Reporting [Abstract] |  |
Number of reportable segments | segment | 4 |
Advance royalty proceeds received from intercompany advanced royalty payments and licensing arrangements | $ | $ 63 | $ 439

X
- Definition Represents the amount of eliminated legal entity advance royalty proceeds received from intercompany royalty and licensing arrangements during the period. + References No definition available. + Details
Name: | hpe_AdvanceRoyaltyProceedsReceivedFromIntercompanyRoyaltyAndLicensingArrangements
Namespace Prefix: | hpe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration