Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Details) (USD $) In Millions, unless otherwise specified	Apr. 29, 2012		Oct. 30, 2011
Components of accumulated other comprehensive loss, after-tax basis
Pension liability	$ (25)		$ (25)
Unrealized gain on investments, net	20		17
Cumulative translation adjustments	12		14
Accumulated other comprehensive income	$ 7	[1]	$ 6	[1]

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