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Stock Based Compensation Stock Based Compensation (Details Textuals) (USD $)
 12 Months Ended 12 Months Ended
Dec. 27, 2011
years
Dec. 28, 2010
Dec. 29, 2009
Dec. 27, 2011
Performance Plan [Member]
years
Dec. 28, 2010
Performance Plan [Member]
Dec. 29, 2009
Performance Plan [Member]
Dec. 27, 2011
Performance Plan [Member]
Maximum [Member]
Dec. 27, 2011
Performance Plan [Member]
Minimum [Member]
Dec. 27, 2011
Restricted Stock [Member]
years
Dec. 28, 2010
Restricted Stock [Member]
Dec. 29, 2009
Restricted Stock [Member]
Dec. 27, 2011
Deferred Bonus [Member]
years
Dec. 28, 2010
Deferred Bonus [Member]
Dec. 29, 2009
Deferred Bonus [Member]
Dec. 27, 2011
Stock Options [Member]
years
Dec. 28, 2010
Stock Options [Member]
Dec. 29, 2009
Stock Options [Member]
Dec. 27, 2011
Stock Appreciation Rights (SARs) [Member]
years
Dec. 27, 2011
Stock Appreciation Rights (SARs) [Member]
General and Administrative Expense [Member]
Dec. 28, 2010
Stock Appreciation Rights (SARs) [Member]
General and Administrative Expense [Member]
Dec. 29, 2009
Stock Appreciation Rights (SARs) [Member]
General and Administrative Expense [Member]
Dec. 27, 2011
Stock Appreciation Rights (SARs) [Member]
Maximum [Member]
Dec. 27, 2011
Stock Appreciation Rights (SARs) [Member]
Minimum [Member]
Dec. 27, 2011
1992 Employee Stock Purchase Plan [Member]
Dec. 28, 2010
1992 Employee Stock Purchase Plan [Member]
Dec. 29, 2009
1992 Employee Stock Purchase Plan [Member]
May 13, 2010
1992 Employee Stock Purchase Plan [Member]
May 01, 1992
1992 Employee Stock Purchase Plan [Member]
May 13, 2010
2006 Stock Incentive Plan [Member]
May 01, 2006
2006 Stock Incentive Plan [Member]
May 01, 1992
Equity Incentive Plan 1992 [Member]
Jun. 01, 2001
Employee Director And Consultant Stock Plan 2001 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                                
Day Closing Stock Price                             $ 141.01     $ 141.01                            
Number of Shares Authorized (in shares)                                                     925,000 825,000 2,300,000 1,500,000 8,600,000 3,000,000
Incentive Compensation Expense $ 17,200,000 $ 19,300,000 $ 12,100,000 $ 7,600,000 $ 10,200,000 $ 5,300,000     $ 7,700,000 $ 7,100,000 $ 5,400,000 $ 1,900,000 $ 2,000,000 $ 1,400,000         $ 100,000 $ 100,000 $ 100,000     $ 400,000 $ 300,000 $ 300,000            
Share Based Compensation Arrangement By Share Based Payment Award Award Performance Period       3                                                        
Share Based Compensation Arrangement By Share Based Payment Award AchievementMeasurement             150.00% 0.00%       50.00%                                        
Percentage paid in Cash (as a percent)       50.00%                                                        
Percentage paid in stock (as a percent)       50.00%                                                        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (in years)                 5           4     4                            
Vesting Percentage (as a percent) 25.00%               25.00%                                              
Holding Period (in years)                 2     3     2     2                            
Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period After Initial Holding Period                 3                                              
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized                 28,900,000           500,000     500,000                            
Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition (in years) 1.3               3.6                 3.8                            
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date (in years)                             6     6                            
Nonvested Awards Total Compensation Cost Not Yet Recognized Forfeiture Assumption                             100,000     100,000                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount                             100,000 100,000 100,000                              
Proceeds from Stock Options Exercised 3,193,000 25,551,000 22,818,000                                                          
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation 4,994,000 3,603,000 5,095,000                                                          
SSARs conversion price range (in dollars per share)                                           $ 100.46 $ 55.20                  
SSARs outstanding weighted average period of conversion (in years)                                   4.4                            
Employee limit for stock purchase plan (as a percent)                                               10.00%                
Percent of Stock paid by Employee (as a percent)                                               85.00%                
Stock Issued During Period, Employee Stock Purchase Plans (in shares)                                               21,000 28,000 36,000            
Fair Value of Purchase Rights for ESPP (in dollars per share)                                               $ 16.97 $ 11.41 $ 7.95            
Stock Issued Cumulative Employee Stock Purchase Plan                                               839,000 818,000 790,000