Industry Segment Operations (Net Sales and Operating Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 26, 2015	Apr. 27, 2014	Apr. 26, 2015	Apr. 27, 2014
Net sales and operating income (loss) for each reportable segment
Net Sales	$ 2,442	$ 2,353	$ 4,801	$ 4,543
Operating Income (Loss)	416	387	874	717
Operating Segments [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	2,442	2,353	4,801	4,543
Operating Income (Loss)	579	570	1,107	1,024
Operating Segments [Member] | Silicon Systems Group [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	1,560	1,584	3,006	3,068
Operating Income (Loss)	374	391	681	705
Operating Segments [Member] | Applied Global Services [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	646	534	1,229	1,041
Operating Income (Loss)	170	148	323	273
Operating Segments [Member] | Display [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	163	147	438	306
Operating Income (Loss)	40	26	112	52
Operating Segments [Member] | Energy And Environmental Solutions [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	73	88	128	128
Operating Income (Loss)	$ (5)	$ 5	$ (9)	$ (6)