Industry Segment Operations (Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 30, 2016	Jul. 31, 2016	May 01, 2016	Jan. 31, 2016	Oct. 25, 2015	Jul. 26, 2015	Apr. 26, 2015	Jan. 25, 2015	Oct. 30, 2016	Oct. 25, 2015	Oct. 26, 2014
Information for each reportable segment
Net Sales	$ 3,297	$ 2,821	$ 2,450	$ 2,257	$ 2,368	$ 2,490	$ 2,442	$ 2,359	$ 10,825	$ 9,659	$ 9,072
Operating Income (Loss)									2,152	1,693	1,520
Depreciation/ Amortization									389	371	375
Capital Expenditures									253	215	241
Accounts Receivable	2,279				1,739				2,279	1,739	1,670
Inventories	2,050				1,833				2,050	1,833	1,567
Semiconductor Systems
Information for each reportable segment
Net Sales									6,873	6,135	5,978
Operating Income (Loss)									1,807	1,410	1,391
Depreciation/ Amortization									277	268	268
Capital Expenditures									114	115	134
Accounts Receivable	1,524				1,160				1,524	1,160	1,146
Inventories	1,188				1,079				1,188	1,079	955
Applied Global Services
Information for each reportable segment
Net Sales									2,589	2,447	2,114
Operating Income (Loss)									682	630	538
Depreciation/ Amortization									12	10	11
Capital Expenditures									14	12	7
Accounts Receivable	559				483				559	483	422
Inventories	594				555				594	555	431
Display and Adjacent Markets
Information for each reportable segment
Net Sales									1,206	944	848
Operating Income (Loss)									245	191	202
Depreciation/ Amortization									5	6	7
Capital Expenditures									6	13	4
Accounts Receivable	238				129				238	129	157
Inventories	215				176				215	176	117
Corporate and Other
Information for each reportable segment
Net Sales									157	133	132
Operating Income (Loss)									(582)	(538)	(611)
Depreciation/ Amortization									95	87	89
Capital Expenditures									119	75	96
Accounts Receivable	(42)				(33)				(42)	(33)	(55)
Inventories	$ 53				$ 23				$ 53	$ 23	$ 64