Goodwill, Purchased Technology and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	Jul. 29, 2012		Oct. 30, 2011
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	$ 1,268		$ 211
Intangible assets - indefinite-lived	142		0
Total	1,410	[1]	211	[1]
Purchased Technology [Member]
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	988		127
Intangible Assets [Member]
Summary of Purchased Technology and Intangible Assets [Line Items]
Carrying amount	$ 280		$ 84

[1] Amounts as of July 29, 2012 are unaudited. Amounts as of October 30, 2011 are derived from the October 30, 2011 audited consolidated financial statements.