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Significant Accounting Policies Stock Compensation Activity (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended
Jul. 01, 2012
Jul. 03, 2011
Jul. 01, 2012
Jul. 03, 2011
Oct. 21, 2010
Jun. 16, 2010
Sep. 30, 2009
Jul. 01, 2012
Restricted Stock [Member]
Sep. 30, 2011
Restricted Stock [Member]
Jul. 01, 2012
Restricted Stock Units (RSUs) [Member]
Sep. 30, 2011
Restricted Stock Units (RSUs) [Member]
Jul. 01, 2012
Time Based RSUs 1 Year Vesting
Jul. 03, 2011
Time Based RSUs 1 Year Vesting
Jul. 01, 2012
Time Based RSUs 2 Year Vesting [Member]
Jul. 03, 2011
Time Based RSUs 3 Year Vesting[Member] [Member]
Jul. 03, 2011
Performance Based RSUs [Member]
Jul. 01, 2012
Performance Based RSUs 2 Year Vesting [Member]
Jul. 03, 2011
Performance Based RSUs 2 Year Vesting [Member]
Jul. 03, 2011
Performance Based RSUs 3 Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant             3,333                        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized         4,626 600                          
Amortization of unearned restricted stock compensation $ 4,490 $ 8,528 $ 15,771 $ 22,815                              
Allocated Share-based Compensation Expense, Net of Tax 2,918 5,543 10,251 14,830                              
Granted Shares 42   759 1,580               18 15 42 18 1,547 699 665 882
Nonvested Awards Outstanding, Shares               13 123 1,955 1,645                
Nonvested Awards Outstanding, Weighted Average Grant Date Fair Value               $ 28.00 $ 24.20 $ 28.41 $ 28.97                
Nonvested Awards Outstanding, Grant Date Fair Value               364 2,977 55,551 47,656                
Granted, Shares                   759                  
Granted, Weighted Average Grant Date Fair Value                   $ 27.35                  
Granted, Grant Date Fair Value     20,756 46,034           20,756                  
Vested, Shares               (110)   (396)                  
Vested, Weighted Average Grant Date Fair Value               $ 23.75   $ 28.72                  
Vested, Grant Date Fair Value               (2,613)   (11,373)                  
Forfeited, Shares                   (53)                  
Forfeited, Weighted Average Grant Date Fair Value                   $ 28.08                  
Forfeited, Fair Value at Grant Date                   $ (1,488)