Goodwill, Purchased Technology and Other Intangible Assets (Finite-lived Intangible Assets) (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 25, 2020
Amortized intangible assets
Gross carrying amount	$ 2,041	$ 2,041
Accumulated amortization	(1,937)	(1,888)
Carrying amount	104	153
Purchased technology, net
Amortized intangible assets
Gross carrying amount	1,687	1,687
Accumulated amortization	(1,641)	(1,612)
Carrying amount	46	75
Other Intangible Assets
Amortized intangible assets
Gross carrying amount	354	354
Accumulated amortization	(296)	(276)
Carrying amount	58	78
Operating Segments | Semiconductor Systems
Amortized intangible assets
Gross carrying amount	1,732	1,732
Accumulated amortization	(1,649)	(1,608)
Operating Segments | Semiconductor Systems | Purchased technology, net
Amortized intangible assets
Gross carrying amount	1,476	1,476
Accumulated amortization	(1,446)	(1,423)
Operating Segments | Semiconductor Systems | Other Intangible Assets
Amortized intangible assets
Gross carrying amount	256	256
Accumulated amortization	(203)	(185)
Operating Segments | Applied Global Services
Amortized intangible assets
Gross carrying amount	79	79
Accumulated amortization	(76)	(75)
Operating Segments | Applied Global Services | Purchased technology, net
Amortized intangible assets
Gross carrying amount	35	35
Accumulated amortization	(32)	(31)
Operating Segments | Applied Global Services | Other Intangible Assets
Amortized intangible assets
Gross carrying amount	44	44
Accumulated amortization	(44)	(44)
Operating Segments | Display and Adjacent Markets
Amortized intangible assets
Gross carrying amount	201	201
Accumulated amortization	(199)	(194)
Operating Segments | Display and Adjacent Markets | Purchased technology, net
Amortized intangible assets
Gross carrying amount	163	163
Accumulated amortization	(161)	(157)
Operating Segments | Display and Adjacent Markets | Other Intangible Assets
Amortized intangible assets
Gross carrying amount	38	38
Accumulated amortization	(38)	(37)
Corporate and Other
Amortized intangible assets
Gross carrying amount	29	29
Accumulated amortization	(13)	(11)
Corporate and Other | Purchased technology, net
Amortized intangible assets
Gross carrying amount	13	13
Accumulated amortization	(2)	(1)
Corporate and Other | Other Intangible Assets
Amortized intangible assets
Gross carrying amount	16	16
Accumulated amortization	$ (11)	$ (10)