Goodwill, Purchased Technology and Other Intangible Assets - Amortization Expense by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 26, 2020	Jul. 28, 2019	Jul. 26, 2020	Jul. 28, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 14	$ 15	$ 40	$ 43
Semiconductor Systems | Operating Segments
Finite-Lived Intangible Assets [Line Items]
Amortization expense	10	11	29	32
Applied Global Services | Operating Segments
Finite-Lived Intangible Assets [Line Items]
Amortization expense	0	0	0	1
Display and Adjacent Markets | Operating Segments
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 4	$ 4	$ 11	$ 10