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Stock Based Compensation (Details 2) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended9 Months Ended3 Months Ended9 Months Ended3 Months Ended9 Months Ended
Oct. 02, 2011
Year
Investment
Jul. 03, 2011
Oct. 03, 2010
Jul. 04, 2010
Oct. 02, 2011
Year
Investment
Oct. 02, 2011
Employee Stock Option [Member]
Year
Oct. 03, 2010
Employee Stock Option [Member]
Year
Oct. 02, 2011
Employee Stock Option [Member]
Year
Oct. 03, 2010
Employee Stock Option [Member]
Year
Jul. 03, 2011
Employee Stock Purchase Plan [Member]
Year
Jul. 04, 2010
Employee Stock Purchase Plan [Member]
Year
Oct. 02, 2011
Service based restricted stock units [Member]
Oct. 02, 2011
Service based restricted stock units [Member]
Oct. 02, 2011
Performance based restricted stock units [Member]
Weighted average assumptions in fair value of option grant              
Estimated grant date fair value per share     $ 2.37$ 1.60$ 2.14$ 1.95$ 2.10$ 1.74   
Expected life (years)     4.484.484.514.290.80.8   
Risk-free interest rate     1.00%1.00%2.00%2.00%0.02%0.30%   
Volatility     50.00%49.00%47.00%51.00%37.00%48.00%   
Restricted stock units              
Unvested restricted stock units, Beginning Balance            7,027,0002,313,000
Granted            7,493,0003,516,000
Vested            (1,907,000)(815,000)
Forfeited            (680,000)(224,000)
Unvested restricted stock units, Ending Balance           11,933,00011,933,0004,790,000
Stock-Based Compensation and Common Stock (Textuals) [Abstract]              
Options outstanding at October 2, 2011, Weighted-Average Remaining Contractual Term3.47   3.47         
Options outstanding at October 2, 2011, Aggregate Intrinsic Value$ 30.3   $ 30.3         
Options exercisable at October 2, 2011, Weighted-Average Remaining Contractual Term    2.51         
Options exercisable at October 2, 2011, Aggregate Intrinsic Value13.5   13.5         
Shares issued under ESPP02,900,00003,300,000          
Period to recognize total unrecognized compensation expense related to Service based restricted stock units    3.1         
Fair value of the shares issued upon the vesting of restricted stock units           1.012.0 
Total unrecognized compensation expense related to Service based restricted stock units awards55.7   55.7         
Total unrecognized compensation expense related to Performance based restricted stock unit awards$ 15.9   $ 15.9         
Period to recognize total unrecognized compensation expense related to Performance based restricted stock units    3