HPE Next (Details 3) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Restructuring Reserve
Charges	$ 0	$ 5
Cash payments	(110)	(226)
HPE Next
Restructuring Reserve
Charges	33	$ 171
HPE Next | Employee Severance
Restructuring Reserve
Balance at the beginning of the period	291
Charges	28
Cash payments	(91)
Non-cash items	(4)
Balance at the end of the period	224
Total costs incurred to date, as of January 31, 2019	794
Total costs expected to be incurred, as of January 31, 2019	1,200
HPE Next | Infrastructure and other
Restructuring Reserve
Balance at the beginning of the period	33
Charges	5
Cash payments	(7)
Non-cash items	(2)
Balance at the end of the period	29
Total costs incurred to date, as of January 31, 2019	66
Total costs expected to be incurred, as of January 31, 2019	$ 180