Goodwill, Purchased Technology and Other Intangible Assets (Schedule of Goodwill and Other Indefinite-lived Intangible Assets) (Details) - USD ($) $ in Millions	Jan. 31, 2016	Oct. 25, 2015
Indefinite-lived intangible assets
Goodwill	$ 3,302	$ 3,302
Other Intangible Assets	25	25
Total	3,327	3,327
Silicon Systems [Member]
Indefinite-lived intangible assets
Goodwill	2,151	2,151
Other Intangible Assets	0	0
Total	2,151	2,151
Applied Global Services [Member]
Indefinite-lived intangible assets
Goodwill	1,027	1,027
Other Intangible Assets	5	5
Total	1,032	1,032
Display [Member]
Indefinite-lived intangible assets
Goodwill	124	124
Other Intangible Assets	18	18
Total	142	142
Energy And Environmental Solutions [Member]
Indefinite-lived intangible assets
Goodwill	0	0
Other Intangible Assets	2	2
Total	$ 2	$ 2