HPE Next (Details 1) - USD ($) $ in Millions		12 Months Ended
		Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 417	$ 417	$ 197
Total	[1]	359	$ 0	$ 0
HPE Next
Restructuring Cost and Reserve [Line Items]
Program management		57
IT costs		34
Restructuring charges		296
Gain on real estate sales		(28)
Total		$ 359

[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.