Goodwill, Purchased Technology and Other Intangible Assets (Amortization Expense by Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 25, 2015	Jan. 26, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 46	$ 46
Silicon Systems Group [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	43	42
Applied Global Services [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	1	1
Display [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	1	1
Energy And Environmental Solutions [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 1	$ 2