Segment Information (Detail 2) - USD ($) $ in Millions		12 Months Ended
		Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Segment Reporting Information
Net revenue		$ 28,871	$ 30,280	$ 31,077
Segment earnings (loss) from operations		625	3,903	1,946
Stock-based compensation expense		(454)	(408)	(362)
Amortization of intangible assets		(321)	(272)	(229)
Restructuring charges		(417)	(417)	(197)
Transformation costs	[1]	(359)	0	0
Disaster charges	[2]	(93)	0	0
Acquisition and other related charges		(203)	(145)	(84)
Separation costs		(248)	(362)	(797)
Defined benefit plan settlement charges and remeasurement (benefit)	[3]	64	0	7
Gain on H3C and MphasiS divestitures		0	2,420	0
Interest and other, net		(327)	(284)	(9)
Tax indemnification adjustments		(3)	317	0
Loss from equity interests	[4]	(23)	(76)	(2)
Total Hewlett Packard Enterprise consolidated and combined earnings from continuing operations before taxes		272	3,860	1,935
Assets		61,406	79,629
Discontinued Operations
Segment Reporting Information
Stock-based compensation expense		(166)	(189)	(203)
Restructuring charges		(251)	(819)	(757)
Enterprise Group
Segment Reporting Information
Net revenue		25,294	26,592	27,193
Financial Services
Segment Reporting Information
Net revenue		3,574	3,097	3,200
Corporate Investments
Segment Reporting Information
Net revenue		3	591	684
Operating segments
Segment Reporting Information
Net revenue		29,816	31,560	32,411
Segment earnings (loss) from operations		2,869	3,665	4,077
Operating segments | Discontinued Operations
Segment Reporting Information
Assets		0	19,453
Operating segments | Enterprise Group
Segment Reporting Information
Net revenue		26,211	27,779	28,511
Segment earnings (loss) from operations		2,707	3,569	3,999
Assets		28,950	26,430
Operating segments | Financial Services
Segment Reporting Information
Net revenue		3,602	3,190	3,216
Segment earnings (loss) from operations		304	336	349
Assets		13,489	13,594
Operating segments | Corporate Investments
Segment Reporting Information
Net revenue		3	591	684
Segment earnings (loss) from operations		(142)	(240)	(271)
Assets		172	161
Eliminations of inter-segment net revenue and other
Segment Reporting Information
Net revenue		945	1,280	1,334
Eliminations of inter-segment net revenue and other | Enterprise Group
Segment Reporting Information
Net revenue		917	1,187	1,318
Eliminations of inter-segment net revenue and other | Financial Services
Segment Reporting Information
Net revenue		28	93	16
Eliminations of inter-segment net revenue and other | Corporate Investments
Segment Reporting Information
Net revenue		0	0	0
Significant Reconciling Items
Segment Reporting Information
Unallocated corporate costs and eliminations		(310)	(619)	(469)
Stock-based compensation expense		(357)	(367)	(362)
Amortization of intangible assets		(321)	(272)	(229)
Restructuring charges		(417)	(417)	(197)
Transformation costs		(359)	0	0
Disaster charges		(93)	0	0
Acquisition and other related charges		(203)	(145)	(84)
Separation costs		(248)	(362)	(797)
Defined benefit plan settlement charges and remeasurement (benefit)		64	0	7
Gain on H3C and MphasiS divestitures		0	(2,420)	0
Interest and other, net		(327)	(284)	(9)
Tax indemnification adjustments		(3)	317	0
Loss from equity interests		(23)	(76)	$ (2)
Corporate and unallocated assets
Segment Reporting Information
Assets		$ 18,795	$ 19,991

[1] Represents amounts incurred in connection with the HPE Next initiative and includes costs related to labor and non-labor restructuring, program management costs and IT costs, partially offset by a gain on the sale of real estate.

[2] Represents amounts incurred in connection with damages sustained by the Company as a result of Hurricane Harvey.

[3] In fiscal 2017, represents adjustments to the net periodic pension cost resulting from remeasurements of Hewlett Packard Enterprise pension plans due to plan separations in connection with the separation and merger of Seattle SpinCo, Inc. with Micro Focus and Everett SpinCo, Inc. with Computer Sciences Corporation. In fiscal 2015, Defined benefit plan settlement charges and remeasurement (benefit), was related to U.S. defined benefit plan settlement expense and net periodic benefit cost resulting from former Parent's voluntary lump sum program announced in January 2015.

[4] Primarily represents the Company’s ownership interest in the net earnings of H3C, which the Company records as an equity method investment.