Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Apr. 28, 2012		Apr. 30, 2011		Apr. 28, 2012		Apr. 30, 2011
Earnings Per Share, Basic
Net income	$ 39,296		$ 26,079		$ 97,880		$ 52,997
Weighted-average shares used in computing basic net income per share	457,541		473,209		455,017		469,158
Basic net income per share (dollars per share)	$ 0.09		$ 0.06		$ 0.22		$ 0.11
Earnings Per Share, Diluted
Net income	$ 39,296		$ 26,079		$ 97,880		$ 52,997
Weighted-average shares used in computing diluted net income per share	476,848		501,511		472,793		496,338
Diluted net income per share (dollars per share)	$ 0.08		$ 0.05		$ 0.21		$ 0.11
Weighted Average Number of Shares Outstanding Reconciliation
Weighted-average shares used in computing basic net income per share	457,541		473,209		455,017		469,158
Dilutive potential common shares in the form of stock options	9,112		15,967		9,501		16,168
Dilutive potential common shares in the form of other share based awards	10,195		12,335		8,275		11,012
Weighted-average shares used in computing diluted net income per share	476,848		501,511		472,793		496,338
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares	14,750	[1]	18,630	[1]	17,284	[1]	21,556	[1]
Other share based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares	108	[1]	403	[1]	592	[1]	771	[1]

[1] These amounts are excluded from the computation of diluted net income per share.