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Share Based Compensation (Details) (USD $)
0 Months Ended 12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Dec. 26, 2009
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation         $ 17,641,000 $ 15,041,000 $ 11,771,000
Shares of common stock issued for employee stock purchase plan (in shares)         48,000 53,000 74,000
Stock option activity [Roll Forward]              
Exercised (in shares)         (1,066,000) (1,444,000) (1,550,000)
Stock options, additional disclosures [Abstract]              
Weighted average fair value, Granted (in dollars per share)         $ 26.26 $ 17.73 $ 10.32
Weighted average remaining contractual term, Outstanding, beginning of period (in years) 6 years 6 months 24 days 6 years 6 months 6 years 8 months 24 days 6 years 4 months 24 days      
Weighted average remaining contractual term, Outstanding, end of period (in years) 6 years 6 months 24 days 6 years 6 months 6 years 8 months 24 days 6 years 4 months 24 days      
Weighted average remaining contractual rerm, Exercisable at end of period (in years) 5 years 6 months 6 years 6 months          
Aggregate intrinsic value, Outstanding, beginning of period         154,782,000 121,350,000 47,413,000
Aggregate intrinsic value, Outstanding, end of period 147,229,000 154,782,000 121,350,000 47,413,000 147,229,000 154,782,000 121,350,000
Aggregate intrinsic value, Exercisable at end of period 118,401,000       118,401,000    
Restricted stock units, additional disclosures [Abstract]              
Blended volatility weighting percentage for historical         75.00%    
Blended volatility weighting percentage for implied         25.00%    
Restricted Stock Units (RSUs) [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares issued as a result of vested restricted stock units (in shares)         179,962 68,007 90,203
Shares withheld to satisfy tax obligations (in shares)         83,630 20,383 28,981
Tax obligations related to restricted stock units         6,800,000 1,100,000 800,000
Restricted stock units [Roll Forward]              
Restricted, beginning of period (in shares)         525,272 550,178 558,784
Granted (in shares)         40,017 63,484 148,862
Exercised (in shares)         (263,592) (88,390) (119,184)
Forfeited (in shares)         0 0 (38,284)
Restricted, end of period (in shares) 301,697 525,272 550,178   301,697 525,272 550,178
Restricted stock units, additional disclosures [Abstract]              
Weighted average grant date fair value, Restricted, beginning of period (in dollars per share)         $ 24.52 $ 20.61 $ 19.04
Weighted average grant date fair value, Granted (in dollars per share)         $ 87.10 $ 53.23 $ 27.37
Weighted average grant date fair value, Exercised (in dollars per share)         $ 20.99 $ 20.82 $ 22.10
Weighted average grant date fair value, Forfeited (in dollars per share)         $ 0.00 $ 0.00 $ 19.28
Weighted average grant date fair value, Restricted, end of period (in dollars per share) $ 37.52 $ 24.52 $ 20.61   $ 37.52 $ 24.52 $ 20.61
Total grant date fair value of restricted units vested and exercised         5,533,000 1,840,000 2,634,000
Total intrinsic value of restricted units vested and exercised         21,694,000 4,915,000 3,329,000
Total unrecognized compensation 3,500,000       3,500,000    
Remaining weighted average expense recognition period (in years)         1 year 7 months 6 days    
Stock Options [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected price volatility, minimum (in hundredths)         37.10% 38.00% 38.50%
Expected price volatility, maximum (in hundredths)         38.50% 38.70% 38.90%
Risk-free interest rate, minimum (in hundredths)         0.60% 0.90% 1.00%
Risk-free interest rate, maximum (in hundredths)         0.80% 2.40% 2.70%
Forfeiture rate, minimum (in hundredths)           5.50% 5.40%
Forfeiture rate, maximum (in hundredths)         7.00% 7.60% 7.70%
Dividend yield, minimum (in hundredths)           0.80% 0.00%
Dividend yield, maximum (in hundredths)         0.70% 1.00% 1.00%
Stock option expiration date (in years)         10 10 10
Stock option activity [Roll Forward]              
Outstanding, beginning of period (in shares)         3,551,875 4,514,857 5,300,844
Granted (in shares)         573,252 546,655 908,728
Exercised (in shares)         (1,066,448) (1,444,007) (1,550,077)
Canceled (in shares)         (28,488) (65,630) (144,638)
Outstanding, end of period (in shares) 3,030,191 3,551,875 4,514,857   3,030,191 3,551,875 4,514,857
Exercisable, end of period (in shares) 1,875,189       1,875,189    
Stock options, additional disclosures [Abstract]              
Weighted average exercise price, Outstanding, beginning of period (in dollars per share)         $ 26.57 $ 21.52 $ 18.53
Weighted average exercise price, Granted (in dollars per share)         $ 85.57 $ 52.18 $ 26.70
Weighted average exercise price, Exercised (in dollars per share)         $ 22.08 $ 20.17 $ 14.28
Weighted average exercise price, Cancelled (in dollars per share)         $ 60.78 $ 33.29 $ 21.82
Weighted average exercise price, Outstanding, end of period (in dollars per share) $ 38.95 $ 26.57 $ 21.52   $ 38.95 $ 26.57 $ 21.52
Weighted average exercise price, Exercisable, end of period (in dollars per share) $ 24.33       $ 24.33    
Total fair value of stock options vested         8,826,000 7,590,000 8,417,000
Total intrinsic value of stock options exercised         71,879,000 59,712,000 31,388,000
Restricted stock units, additional disclosures [Abstract]              
Total unrecognized compensation 14,400,000       14,400,000    
Remaining weighted average expense recognition period (in years)         1 year 4 months 24 days    
Stock Options [Member] | Minimum
             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Weighted average expected lives (in years)           4 years 8 months 24 days 4 years 9 months 24 days
Stock Options [Member] | Maximum
             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Weighted average expected lives (in years)         4 years 8 months 24 days 5 years 7 months 24 days 5 years 9 months 24 days
Employee Stock [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation         $ 800,000 $ 600,000 $ 400,000
Discount rate of employee stock purchase plan (in hundredths)         15.00%    
Shares of common stock issued for employee stock purchase plan (in shares)         47,918 53,333 74,788
Shares of common stock reserved for future issuance under the ESPP (in shares) 6,198,601       6,198,601    
2009 Stock Incentive Plan [Member]
             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Maximum number of shares available for grant as stock options or other awards (in shares) 6,200,000       6,200,000    
Number of shares available for future equity awards (in shares) 4,003,636       4,003,636