Goodwill, Purchased Technology and Other Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 27, 2019	Oct. 28, 2018	Oct. 29, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 57	$ 199	$ 193
Cost of products sold
Finite-Lived Intangible Assets [Line Items]
Amortization expense	38	180	173
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	18	18	19
Operating Segments | Semiconductor Systems
Finite-Lived Intangible Assets [Line Items]
Amortization expense	43	184	185
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	$ 13	$ 14	$ 7