Goodwill, Purchased Technology and Other Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2016	Jan. 25, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 48	$ 46
Cost of products sold [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	43	40
Marketing and selling [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	5	5
General and administrative [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 0	$ 1