Goodwill, Purchased Technology and Other Intangible Assets (Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 26, 2015	Apr. 27, 2014	Apr. 26, 2015	Apr. 27, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 46	$ 45	$ 92	$ 91
Cost of products sold [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	40	39	80	79
Marketing and selling [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	5	6	10	11
General and administrative [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 1	$ 0	$ 2	$ 1