Restructuring Charges and Asset Impairments (Major Components of the Restructuring and Asset Impairment Charges) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 26, 2014	Oct. 27, 2013	Oct. 28, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	$ 5	$ 63	$ 168
2012 Global Restructuring Plan [Member] | Severance and other employee-related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	5	39	106
2012 EES Restructuring Plan [Member] | Severance and other employee-related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	0	8	27
2012 EES Restructuring Plan [Member] | Contract cancellation and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	0	6	1
2012 EES Restructuring Plan [Member] | Asset impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	0	12	20
Others [Member] | Severance and other employee-related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	0	2	14
Others [Member] | Contract cancellation and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset impairments	$ 0	$ (4)	$ 0