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HPE Next - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Oct. 31, 2019
Restructuring Cost and Reserve [Line Items]
Transformation costs	$ 89	$ 78
Current restructuring liability reported in Accrued restructuring	184		$ 195
HPE Next
Restructuring Cost and Reserve [Line Items]
Transformation costs	89	83
Current restructuring liability reported in Accrued restructuring	160		164
Long-term portion of restructuring reserve, recorded in Other liabilities	$ 61		$ 56
Transformation Costs | HPE Next
Restructuring Cost and Reserve [Line Items]
Transformation costs		78
Non-Service Net Periodic Benefit Credit | HPE Next
Restructuring Cost and Reserve [Line Items]
Transformation costs		$ 5

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Transformation Costs

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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-SubTopic 10
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