Cover Page - USD ($)	12 Months Ended
	Oct. 31, 2019	Nov. 30, 2019	Apr. 30, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 31, 2019
Document Transition Report	false
Entity File Number	001-37483
Entity Registrant Name	HEWLETT PACKARD ENTERPRISE CO
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-3298624
Entity Address, Address Line One	6280 America Center Drive,
Entity Address, City or Town	San Jose,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95002
City Area Code	(650)
Local Phone Number	687-5817
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	HPE
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 21,263,421,512
Entity Common Stock, Shares Outstanding		1,292,925,893
Amendment Flag	false
Current Fiscal Year End Date	--10-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0001645590
Documents Incorporated by Reference	Portions of the Registrant's proxy statement related to its 2020 Annual Meeting of Stockholders to be filed pursuant to Regulation 14A within 120 days after Registrant's fiscal year end of October 31, 2019 are incorporated by reference into Part III of this Report.