Goodwill, Purchased Technology and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	Jul. 28, 2013	Oct. 28, 2012
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	$ 1,006	$ 1,213
Intangible assets - indefinite-lived	142	142
Total	1,148	1,355
Purchased technology [Member]
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	786	945
Intangible assets [Member]
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	$ 220	$ 268