Stock-Based Compensation (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 29, 2011	Oct. 30, 2010	Oct. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares approved	35.0
Shares remaining for future issuance	18.7
Stock-based compensation expense	$ 83,076,000	$ 101,625,000	$ 137,219,000	[1]
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, weighted-average grant date fair value	$ 2.23	$ 2.89	$ 2.10
Aggregate intrinsic value	46,000,000	51,700,000	128,900,000
Options granted subject to variable accounting	98.8
Options outstanding under variable accounting	0.2
Options under variable accounting, weighted-average exercise price	$ 7.55
Options under variable accounting, weighted-average contractual life, years	1.01
Stock-based compensation expense	3,483,000	12,383,000	24,460,000	[1]
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of qualified compensation allowed to purchase common stock	15.00%
Purchase price as a percentage lesser than fair market value	85.00%
Stock-based compensation expense	23,843,000	33,662,000	25,216,000	[1]
Foundry ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price as a percentage lesser than fair market value			85.00%
Stock issued			4.9
Stock-based compensation expense			2,500,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued	12.8	10.8	13.3
Stock-based compensation expense	55,750,000	55,580,000	87,543,000	[1]
Minimum vesting period (in years)	one
Maximum vesting period (in years)	four
Aggregate intrinsic value	$ 105,900,000	$ 178,900,000	$ 288,100,000
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued	0	0	0

[1] ESPP expense for the year ended October 31, 2009 includes $2.5 million of expenses relating to Foundry's ESPP plan.