Goodwill, Purchased Technology and Other Intangible Assets (Schedule of Finite-lived Intangible Assets) (Details) - USD ($) $ in Millions	Jan. 31, 2016	Oct. 25, 2015
Finite-lived intangible assets
Gross carrying amount	$ 1,932	$ 1,932
Accumulated amortization	(1,243)	(1,195)
Total	689	737
Silicon Systems [Member]
Finite-lived intangible assets
Gross carrying amount	1,701	1,701
Accumulated amortization	(1,018)	(971)
Applied Global Services [Member]
Finite-lived intangible assets
Gross carrying amount	72	72
Accumulated amortization	(70)	(70)
Display [Member]
Finite-lived intangible assets
Gross carrying amount	143	143
Accumulated amortization	(143)	(143)
Energy And Environmental Solutions [Member]
Finite-lived intangible assets
Gross carrying amount	16	16
Accumulated amortization	(12)	(11)
Purchased technology [Member]
Finite-lived intangible assets
Gross carrying amount	1,591	1,591
Accumulated amortization	(1,059)	(1,016)
Total	532	575
Purchased technology [Member] | Silicon Systems [Member]
Finite-lived intangible assets
Gross carrying amount	1,449	1,449
Accumulated amortization	(919)	(876)
Purchased technology [Member] | Applied Global Services [Member]
Finite-lived intangible assets
Gross carrying amount	28	28
Accumulated amortization	(26)	(26)
Purchased technology [Member] | Display [Member]
Finite-lived intangible assets
Gross carrying amount	110	110
Accumulated amortization	(110)	(110)
Purchased technology [Member] | Energy And Environmental Solutions [Member]
Finite-lived intangible assets
Gross carrying amount	4	4
Accumulated amortization	(4)	(4)
Other [Member]
Finite-lived intangible assets
Gross carrying amount	341	341
Accumulated amortization	(184)	(179)
Total	157	162
Other [Member] | Silicon Systems [Member]
Finite-lived intangible assets
Gross carrying amount	252	252
Accumulated amortization	(99)	(95)
Other [Member] | Applied Global Services [Member]
Finite-lived intangible assets
Gross carrying amount	44	44
Accumulated amortization	(44)	(44)
Other [Member] | Display [Member]
Finite-lived intangible assets
Gross carrying amount	33	33
Accumulated amortization	(33)	(33)
Other [Member] | Energy And Environmental Solutions [Member]
Finite-lived intangible assets
Gross carrying amount	12	12
Accumulated amortization	$ (8)	$ (7)