Industry Segment Operations (Net Sales and Operating Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 28, 2019	Jul. 29, 2018	Jul. 28, 2019	Jul. 29, 2018
Net sales and operating income (loss) for each reportable segment
Net Sales	$ 3,562	$ 4,162	$ 10,854	$ 12,946
Operating Income (Loss)	802	1,093	2,486	3,600
Corporate and Other
Net sales and operating income (loss) for each reportable segment
Net Sales	19	16	58	59
Operating Income (Loss)	(111)	(174)	(362)	(517)
Semiconductor Systems | Operating Segments
Net sales and operating income (loss) for each reportable segment
Net Sales	2,273	2,578	6,725	8,331
Operating Income (Loss)	613	831	1,823	2,847
Applied Global Services | Operating Segments
Net sales and operating income (loss) for each reportable segment
Net Sales	931	952	2,877	2,778
Operating Income (Loss)	259	280	827	814
Display and Adjacent Markets | Operating Segments
Net sales and operating income (loss) for each reportable segment
Net Sales	339	616	1,194	1,778
Operating Income (Loss)	$ 41	$ 156	$ 198	$ 456
Sales Revenue
Net sales and operating income (loss) for each reportable segment
Percentage of net sales	100.00%	100.00%	100.00%	100.00%
Sales Revenue | Semiconductor Systems
Net sales and operating income (loss) for each reportable segment
Percentage of net sales	100.00%	100.00%	100.00%	100.00%
Foundry, logic and other | Sales Revenue | Semiconductor Systems
Net sales and operating income (loss) for each reportable segment
Percentage of net sales	49.00%	36.00%	50.00%	34.00%
Dynamic random-access memory (DRAM) | Sales Revenue | Semiconductor Systems
Net sales and operating income (loss) for each reportable segment
Percentage of net sales	27.00%	25.00%	22.00%	28.00%
Flash memory | Sales Revenue | Semiconductor Systems
Net sales and operating income (loss) for each reportable segment
Percentage of net sales	24.00%	39.00%	28.00%	38.00%