HPE Next - Schedule of Restructuring Activity (Details) - HPE Next - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Restructuring Reserve
Charges	$ 164	$ 18	$ 248	$ 51
Employee Severance
Restructuring Reserve
Balance at the beginning of the period			178
Charges			211
Cash payments			(211)
Non-cash items			(2)
Balance at the end of the period	176		176
Total costs incurred to date, as of April 30, 2020	1,131		1,131
Total costs expected to be incurred, as of April 30, 2020	1,200		1,200
Infrastructure and other
Restructuring Reserve
Balance at the beginning of the period			42
Charges			37
Cash payments			(20)
Non-cash items			(7)
Balance at the end of the period	52		52
Total costs incurred to date, as of April 30, 2020	163		163
Total costs expected to be incurred, as of April 30, 2020	$ 180		$ 180