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Shareholders' Equity (Tables)
12 Months Ended
Sep. 29, 2012
Stockholders' Equity Note [Abstract]  
Schedule Of Shares Reserved For Future Issuance
  
Shares
Conversion of Class B to Class A shares
7,704,589

2008 Stock Appreciation Rights Plan
1,928,956

2003 Stock Option Plan
1,131,852

1998 Stock Option Plan
157,861

Class A shares reserved for issuance
10,923,258