Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Major components of assets and liabilities included in distribution
Loss from discontinued operations, net of taxes	$ 0	$ (58)
Hewlett-Packard Enterprise | Spinoff
Major components of assets and liabilities included in distribution
Expenses	0	87
Interest and other, net	(29)	0
Earnings (loss) from discontinued operations before taxes	29	(87)
(Provision for) benefit from taxes	(29)	29
Loss from discontinued operations, net of taxes	0	$ (58)
Tax impact relating to tax indemnification amounts and provision for taxes	$ 29