Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Details) (USD $) In Millions, unless otherwise specified	Jul. 29, 2012		Oct. 30, 2011
Components of accumulated other comprehensive loss, after-tax basis
Pension liability	$ (25)		$ (25)
Unrealized gain on investments, net	11		17
Unrealized gain (loss) on derivative instruments	(4)		0
Cumulative translation adjustments	13		14
Accumulated other comprehensive income	$ (5)	[1]	$ 6	[1]

[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.