Industry Segment Operations - Schedule of Reportable Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 25, 2026	Jan. 26, 2025	Oct. 26, 2025
Segment Reporting Information [Line Items]
Revenue	$ 7,012	$ 7,166
Costs of products sold	3,577	3,670
Gross profit	$ 3,435	$ 3,496
Gross margin	49.00%	48.80%
Operating expenses:
Research, development and engineering	$ 928	$ 859
Selling, general and administrative	411	462
Legal settlement	253	0
Restructuring charges	12	0
Income from operations	$ 1,831	$ 2,175
Operating margin	26.10%	30.40%
Depreciation and amortization	$ 127	$ 105
Capital expenditures	646	381
Accounts receivable	4,977	5,998	$ 5,185
Inventories	5,997	5,501	5,915
Goodwill	3,707	3,768	$ 3,707
Operating Segments | Semiconductor Systems
Segment Reporting Information [Line Items]
Revenue	5,141	5,597
Costs of products sold	2,347	2,611
Gross profit	$ 2,794	$ 2,986
Gross margin	54.30%	53.40%
Operating expenses:
Research, development and engineering	$ 798	$ 734
Selling, general and administrative	316	380
Legal settlement	253
Restructuring charges	0
Income from operations	$ 1,427	$ 1,872
Operating margin	27.80%	33.40%
Depreciation and amortization	$ 81	$ 69
Capital expenditures	76	107
Accounts receivable	3,687	4,779
Inventories	4,047	3,543
Goodwill	2,544	2,564
Operating Segments | Applied Global Services
Segment Reporting Information [Line Items]
Revenue	1,559	1,353
Costs of products sold	1,022	916
Gross profit	$ 537	$ 437
Gross margin	34.40%	32.30%
Operating expenses:
Research, development and engineering	$ 18	$ 14
Selling, general and administrative	81	87
Legal settlement	0
Restructuring charges	0
Income from operations	$ 438	$ 336
Operating margin	28.10%	24.80%
Depreciation and amortization	$ 14	$ 12
Capital expenditures	10	4
Accounts receivable	1,203	1,105
Inventories	1,826	1,810
Goodwill	964	964
Other
Segment Reporting Information [Line Items]
Revenue	312	216
Costs of products sold	208	143
Gross profit	104	73
Operating expenses:
Research, development and engineering	112	111
Selling, general and administrative	14	(5)
Legal settlement	0
Restructuring charges	12
Income from operations	(34)	(33)
Depreciation and amortization	32	24
Capital expenditures	560	270
Accounts receivable	87	114
Inventories	124	148
Goodwill	$ 199	$ 240