HPE Next (Details 2) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Restructuring Reserve
Charges	$ 3	$ 83
Cash payments	(226)	$ (326)
HPE Next
Restructuring Reserve
Charges	171
HPE Next | Employee Severance
Restructuring Reserve
Balance at the beginning of the period	296
Charges	162
Cash payments	(106)
Non-cash items	7
Balance at the end of the period	359
Total costs incurred to date, as of January 31, 2018	458
Total costs expected to be incurred, as of January 31, 2018	750
HPE Next | Infrastructure and other
Restructuring Reserve
Balance at the beginning of the period	0
Charges	9
Cash payments	(2)
Non-cash items	(3)
Balance at the end of the period	4
Total costs incurred to date, as of January 31, 2018	9
Total costs expected to be incurred, as of January 31, 2018	$ 180