HPE Next (Details 3) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Restructuring Reserve
Charges	$ 9	$ 69	$ 12	$ 152
Cash payments			(414)	$ (545)
HPE Next
Restructuring Reserve
Charges	85		256
HPE Next | Employee Severance
Restructuring Reserve
Balance at the beginning of the period			296
Charges			229
Cash payments			(255)
Non-cash items			(3)
Balance at the end of the period	267		267
Total costs incurred to date, as of April 30, 2018	525		525
Total costs expected to be incurred, as of April 30, 2018	750		750
HPE Next | Infrastructure and other
Restructuring Reserve
Balance at the beginning of the period			0
Charges			27
Cash payments			(7)
Non-cash items			(6)
Balance at the end of the period	14		14
Total costs incurred to date, as of April 30, 2018	27		27
Total costs expected to be incurred, as of April 30, 2018	$ 180		$ 180