Industry Segment Operations (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Aug. 01, 2010	Jul. 31, 2011	Aug. 01, 2010
Net sales and operating income (loss) for each reportable segment
Net Sales	$ 2,787	$ 2,518	$ 8,336	$ 6,662
Operating Income (Loss)	687	183	2,037	685
Silicon Systems Group [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	1,398	1,447	4,348	3,821
Operating Income (Loss)	452	525	1,486	1,328
Applied Global Services [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	603	468	1,784	1,349
Operating Income (Loss)	146	84	322	237
Display [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	223	216	528	618
Operating Income (Loss)	58	64	116	179
Energy and Environmental Solutions [Member]
Net sales and operating income (loss) for each reportable segment
Net Sales	563	387	1,676	874
Operating Income (Loss)	123	(371)	436	(552)
Operating Segments [Member]
Net sales and operating income (loss) for each reportable segment
Operating Income (Loss)	$ 779	$ 302	$ 2,360	$ 1,192