Goodwill, Purchased Technology and Other Intangible Assets (Amortization Expense by Segment) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May. 01, 2016	Apr. 26, 2015	May. 01, 2016	Apr. 26, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 47	$ 46	$ 95	$ 92
Silicon Systems [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	46	44	92	87
Applied Global Services [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	0	0	1	1
Display [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	0	1	0	2
Energy And Environmental Solutions [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 1	$ 1	$ 2	$ 2