Net Income Per Share (Schedule Of Calculation Of Basic And Diluted Net Income (Loss) Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Jan. 29, 2011	Oct. 27, 2012		Oct. 29, 2011		Oct. 30, 2010
Earnings Per Share, Basic
Net income	$ 54,001	$ 43,300	$ 39,296	$ 58,584	$ (4,324)	$ 1,937	$ 26,079	$ 26,918	$ 195,181		$ 50,610		$ 116,523
Weighted-average shares used in computing basic net income per share	459,333	457,147	457,541	452,494	474,975	483,744	473,209	465,108	456,629		474,259		446,996
Basic net income per share (dollars per share)	$ 0.12	$ 0.09	$ 0.09	$ 0.13	$ (0.01)	$ 0.00	$ 0.06	$ 0.06	$ 0.43		$ 0.11		$ 0.26
Earnings Per Share, Diluted
Net income	$ 54,001	$ 43,300	$ 39,296	$ 58,584	$ (4,324)	$ 1,937	$ 26,079	$ 26,918	$ 195,181		$ 50,610		$ 116,523
Weighted-average shares used in computing diluted net income per share	474,213	469,571	476,848	468,738	474,975	509,548	501,511	491,166	472,343		497,030		482,741
Diluted net income per share (dollars per share)	$ 0.11	$ 0.09	$ 0.08	$ 0.12	$ (0.01)	$ 0.00	$ 0.05	$ 0.05	$ 0.41		$ 0.10		$ 0.24
Weighted Average Number of Shares Outstanding Reconciliation
Weighted-average shares used in computing basic net income per share	459,333	457,147	457,541	452,494	474,975	483,744	473,209	465,108	456,629		474,259		446,996
Dilutive potential common shares in the form of stock options									7,846		13,654		22,083
Dilutive potential common shares in the form of other share based awards									7,868		9,117		13,662
Weighted-average shares used in computing diluted net income per share	474,213	469,571	476,848	468,738	474,975	509,548	501,511	491,166	472,343		497,030		482,741
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares									16,402	[1]	21,905	[1]	21,217	[1]
Other share based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares									570	[1]	3,075	[1]	700	[1]
Convertible debt
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares									0	[1]	0	[1]	3,552	[1]

[1] These potential common shares were excluded from diluted net income per share calculation because their effect would have been anti-dilutive.