Industry Segment Operations (Reportable Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 27, 2019
Segment Reporting Information [Line Items]
Net sales	$ 23,063	$ 17,202	$ 14,608
Operating Income (Loss)	6,889	4,365	3,350
Deprecation/Amortization	394	376	363
Capital Expenditures	668	422	441
Accounts Receivable	4,953	2,963	2,533
Inventories	4,309	3,904	3,474
Operating Segments | Semiconductor Systems
Segment Reporting Information [Line Items]
Net sales	16,286	11,367	9,027
Operating Income (Loss)	6,311	3,714	2,464
Deprecation/Amortization	194	219	202
Capital Expenditures	228	226	168
Accounts Receivable	3,886	2,061	1,543
Inventories	2,586	2,139	1,703
Operating Segments | Applied Global Services
Segment Reporting Information [Line Items]
Net sales	5,013	4,155	3,854
Operating Income (Loss)	1,508	1,127	1,101
Deprecation/Amortization	32	34	25
Capital Expenditures	29	30	47
Accounts Receivable	922	764	790
Inventories	1,561	1,545	1,535
Operating Segments | Display and Adjacent Markets
Segment Reporting Information [Line Items]
Net sales	1,634	1,607	1,651
Operating Income (Loss)	314	291	294
Deprecation/Amortization	27	31	22
Capital Expenditures	32	29	43
Accounts Receivable	207	179	246
Inventories	153	195	214
Corporate and Other
Segment Reporting Information [Line Items]
Net sales	130	73	76
Operating Income (Loss)	(1,244)	(767)	(509)
Deprecation/Amortization	141	92	114
Capital Expenditures	379	137	183
Accounts Receivable	(62)	(41)	(46)
Inventories	$ 9	$ 25	$ 22