Goodwill, Purchased Technology and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	Jan. 26, 2014	Oct. 27, 2013
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	$ 915	$ 961
Intangible assets - indefinite-lived	142	142
Total	1,057	1,103
Purchased technology [Member]
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	709	748
Intangible assets [Member]
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	$ 206	$ 213