Restructuring Charges and Asset Impairments (Major Components of the Restructuring and Asset Impairment Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2015	Oct. 26, 2014	Oct. 27, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	$ 14	$ 5	$ 63
2012 Global Restructuring Plan | Severance and other employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	(1)	5	39
2012 EES Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments			26
2012 EES Restructuring Plan | Severance and other employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	0	0	8
2012 EES Restructuring Plan | Contract cancellation and other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	(2)	0	6
2012 EES Restructuring Plan | Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	0	0	12
Others | Severance and other employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	9	0	2
Others | Contract cancellation and other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	1	0	(4)
Others | Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	$ 7	$ 0	$ 0