Goodwill, Purchased Technology and Other Intangible Assets (Amortization Expense by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2015	Oct. 26, 2014	Oct. 27, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 186	$ 184	$ 199
Silicon Systems
Finite-Lived Intangible Assets [Line Items]
Amortization expense	179	173	172
Applied Global Services
Finite-Lived Intangible Assets [Line Items]
Amortization expense	1	3	5
Display
Finite-Lived Intangible Assets [Line Items]
Amortization expense	2	2	6
Energy and Environmental Solutions
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 4	$ 6	$ 16