Goodwill, Purchased Technology and Other Intangible Assets (Schedule of Goodwill and Other Indefinite-lived Intangible Assets) (Details) - USD ($) $ in Millions	Jul. 26, 2015	Oct. 26, 2014
Indefinite-lived intangible assets
Goodwill	$ 3,304	$ 3,304
Other Intangible Assets	26	127
Total	3,330	3,431
Silicon Systems Group [Member]
Indefinite-lived intangible assets
Goodwill	2,151	2,151
Other Intangible Assets	0	103
Total	2,151	2,254
Applied Global Services [Member]
Indefinite-lived intangible assets
Goodwill	1,027	1,027
Other Intangible Assets	6	6
Total	1,033	1,033
Display [Member]
Indefinite-lived intangible assets
Goodwill	126	126
Other Intangible Assets	18	18
Total	144	144
Energy And Environmental Solutions [Member]
Indefinite-lived intangible assets
Goodwill	0	0
Other Intangible Assets	2	0
Total	$ 2	$ 0