Industry Segment Operations (Net Sales and Operating Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 28, 2019	Apr. 29, 2018	Apr. 28, 2019	Apr. 29, 2018
Net sales and operating income (loss) for each reportable segment
Net Sales	$ 3,539	$ 4,579	$ 7,292	$ 8,784
Operating Income (Loss)	776	1,292	1,684	2,507
Corporate and Other
Net sales and operating income (loss) for each reportable segment
Net Sales	23	14	39	43
Operating Income (Loss)	(128)	(189)	(251)	(343)
Semiconductor Systems | Operating Segments
Net sales and operating income (loss) for each reportable segment
Net Sales	2,184	2,901	4,452	5,753
Operating Income (Loss)	579	992	1,210	2,016
Applied Global Services | Operating Segments
Net sales and operating income (loss) for each reportable segment
Net Sales	984	945	1,946	1,826
Operating Income (Loss)	283	279	568	534
Display and Adjacent Markets | Operating Segments
Net sales and operating income (loss) for each reportable segment
Net Sales	348	719	855	1,162
Operating Income (Loss)	$ 42	$ 210	$ 157	$ 300
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	58.00%	30.00%	51.00%	33.00%
Dynamic random-access memory (DRAM) | Sales Revenue | Semiconductor Systems
Net sales and operating income (loss) for each reportable segment
Percentage of net sales	18.00%	32.00%	19.00%	29.00%
Flash memory | Sales Revenue | Semiconductor Systems
Net sales and operating income (loss) for each reportable segment
Percentage of net sales	24.00%	38.00%	30.00%	38.00%