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Composition Of Certain Financial Statement Captions (Schedule Of Other Non-Current Liabilities) (Details) - USD ($)
$ in Thousands
Sep. 25, 2015
Sep. 26, 2014
Composition Of Certain Financial Statement Captions [Abstract]    
Supplemental retirement plan obligations $ 2,400 $ 2,409
Non-current tax liabilities 62,843 30,715
Other liabilities 11,781 10,591
Other non-current liabilities $ 77,024 $ 43,715