Restructuring Charges and Asset Impairments (Changes in Restructuring Reserves) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 26, 2014	Oct. 27, 2013	Oct. 28, 2012
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 39	$ 133	$ 11
Provision for restructuring reserves	7	52	148
Consumption of reserves	(35)	(136)	(26)
Adjustment of restructuring reserves	(2)	(10)
Ending Balance	9	39	133
2012 Global Restructuring Plan [Member] | Severance and other employee-related costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	26	106	0
Provision for restructuring reserves	7	35	106
Consumption of reserves	(27)	(111)	0
Adjustment of restructuring reserves	(2)	(4)
Ending Balance	4	26	106
2012 EES Restructuring Plan [Member] | Severance and other employee-related costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	5	16	0
Provision for restructuring reserves	0	7	27
Consumption of reserves	(5)	(18)	(11)
Adjustment of restructuring reserves	0	0
Ending Balance	0	5	16
2012 EES Restructuring Plan [Member] | Contract cancellation and other costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	5	1	0
Provision for restructuring reserves	0	8	1
Consumption of reserves	(1)	(2)	0
Adjustment of restructuring reserves	0	(2)
Ending Balance	4	5	1
Others [Member] | Severance and other employee-related costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	2	5	6
Provision for restructuring reserves	0	2	14
Consumption of reserves	(2)	(5)	(15)
Adjustment of restructuring reserves	0	0
Ending Balance	0	2	5
Others [Member] | Contract cancellation and other costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	1	5	5
Provision for restructuring reserves	0	0	0
Consumption of reserves	0	0	0
Adjustment of restructuring reserves	0	(4)
Ending Balance	$ 1	$ 1	$ 5