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Stock-Based Compensation (Details 2) (USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Oct. 01, 2013
Sep. 30, 2014
Oct. 01, 2013
Dec. 31, 2013
Stock options
          
Stock option activity, shares          
Outstanding, at the beginning of the period (in shares)     4,823    
Granted (in shares)     329    
Exercised (in shares)     (648)    
Forfeited or cancelled (in shares)     (37)    
Outstanding at the end of the period (in shares) 4,467   4,467   4,823
Exercisable at the end of the period (in shares) 2,556   2,556    
Weighted Average Exercise price          
Outstanding at the beginning of the period (in dollars per share)     $ 23.70    
Granted (in dollars per share)     $ 48.19    
Exercised (in dollars per share)     $ 19.66    
Forfeited or cancelled (in dollars per share)     $ 30.89    
Outstanding at the end of the period (in dollars per share) $ 26.03   $ 26.03   $ 23.70
Exercisable at the end of the period (in dollars per share) $ 23.56   $ 23.56    
Weighted Average Remaining Contractual Term          
Outstanding at the beginning of the period     3 years 8 months 12 days   4 years 1 month 6 days
Outstanding at the end of the period     3 years 8 months 12 days   4 years 1 month 6 days
Exercisable at the end of the period     2 years 10 months 24 days    
Aggregate Intrinsic Value          
Outstanding at the beginning of the period     $ 118,505,000    
Outstanding at the end of the period 87,875,000   87,875,000   118,505,000
Exercisable at the end of the period 56,076,000   56,076,000    
Total intrinsic value of options exercised 4,800,000 9,700,000 17,500,000 29,400,000  
Unrecognized Stock-based Compensation Expense          
Total unrecognized stock-based compensation expenses related to unvested stock options, restricted shares and restricted share units 12,500,000   12,500,000    
Expected weighted average period for recognition of compensation expense related to unvested stock option     2 years 1 month 6 days    
Restricted Shares and Restricted Share Units
          
Unrecognized Stock-based Compensation Expense          
Total unrecognized stock-based compensation expenses related to unvested stock options, restricted shares and restricted share units 36,200,000   36,200,000    
Expected weighted average period for recognition of compensation expense related to unvested stock option     3 years 2 months 12 days    
Restricted Shares and Restricted Share Units          
Outstanding at the beginning of the period (in shares)     1,672    
Granted (in shares)     374    
Vested (in shares)     (180)    
Forfeited (in shares)     (92)    
Outstanding at the end of the period (in shares) 1,774   1,774    
Fair value of shares vested $ 400,000 $ 100,000 $ 4,200,000 $ 2,500,000  
Weighted Average Fair Value          
Outstanding at the beginning of the period (in dollars per share)     $ 32.81    
Granted (in dollars per share) $ 43.41 $ 42.63 $ 47.27    
Vested (in dollars per share)     $ 23.31    
Forfeited (in dollars per share)     $ 36.40    
Outstanding at the end of the period (in dollars per share) $ 36.63   $ 36.63