Goodwill, Purchased Technology and Other Intangible Assets - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Millions	Jan. 26, 2020	Oct. 27, 2019
Finite-lived intangible assets
Gross carrying amount:	$ 1,988	$ 1,988
Accumulated amortization:	(1,846)	(1,832)
Total	142	156
Corporate and Other
Finite-lived intangible assets
Gross carrying amount:	9	9
Accumulated amortization:	(9)	(9)
Semiconductor Systems | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	1,701	1,701
Accumulated amortization:	(1,578)	(1,568)
Applied Global Services | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	77	77
Accumulated amortization:	(74)	(74)
Display and Adjacent Markets | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	201	201
Accumulated amortization:	(185)	(181)
Purchased technology, net
Finite-lived intangible assets
Gross carrying amount:	1,645	1,645
Accumulated amortization:	(1,584)	(1,574)
Total	61	71
Purchased technology, net | Corporate and Other
Finite-lived intangible assets
Gross carrying amount:	0	0
Accumulated amortization:	0	0
Purchased technology, net | Semiconductor Systems | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	1,449	1,449
Accumulated amortization:	(1,406)	(1,400)
Purchased technology, net | Applied Global Services | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	33	33
Accumulated amortization:	(30)	(30)
Purchased technology, net | Display and Adjacent Markets | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	163	163
Accumulated amortization:	(148)	(144)
Other Intangible Assets
Finite-lived intangible assets
Gross carrying amount:	343	343
Accumulated amortization:	(262)	(258)
Total	81	85
Other Intangible Assets | Corporate and Other
Finite-lived intangible assets
Gross carrying amount:	9	9
Accumulated amortization:	(9)	(9)
Other Intangible Assets | Semiconductor Systems | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	252	252
Accumulated amortization:	(172)	(168)
Other Intangible Assets | Applied Global Services | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	44	44
Accumulated amortization:	(44)	(44)
Other Intangible Assets | Display and Adjacent Markets | Operating Segments
Finite-lived intangible assets
Gross carrying amount:	38	38
Accumulated amortization:	$ (37)	$ (37)