Goodwill, Purchased Technology and Other Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 27, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 49	$ 56	$ 57
Cost of products sold
Finite-Lived Intangible Assets [Line Items]
Amortization expense	29	37	38
Research, development, and engineering
Finite-Lived Intangible Assets [Line Items]
Amortization expense	1	1	1
Marketing and selling
Finite-Lived Intangible Assets [Line Items]
Amortization expense	19	18	18
Operating Segments | Semiconductor Systems
Finite-Lived Intangible Assets [Line Items]
Amortization expense	41	40	43
Operating Segments | Applied Global Services
Finite-Lived Intangible Assets [Line Items]
Amortization expense	1	1	1
Operating Segments | Display and Adjacent Markets
Finite-Lived Intangible Assets [Line Items]
Amortization expense	5	13	13
Corporate and Other
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 2	$ 2	$ 0