Composition Of Certain Financial Statement Captions (Schedule Of Other Non-Current Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2016	Sep. 25, 2015
Composition Of Certain Financial Statement Captions [Abstract]
Document Period End Date	Jan. 01, 2016
Supplemental retirement plan obligations	$ 2,480	$ 2,400
Non-current tax liabilities	57,011	62,843
Other liabilities	11,583	11,781
Other non-current liabilities	$ 71,074	$ 77,024