Summary Of Significant Accounting Policies Impact of Change in Accounting Principle on Consolidated Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings	$ 2,112,734	$ 2,128,739	$ 1,974,125	$ 1,849,697
Accumulated other comprehensive loss	(285,453)	(415,477)	(372,792)	(337,369)
Total shareholders' equity	1,243,083	1,322,481	1,224,986	1,214,304
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings		2,133,328	1,973,514	1,847,819
Accumulated other comprehensive loss		(420,066)	(372,181)	(335,491)
Total shareholders' equity		1,322,481	1,224,986	1,214,304
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings	(4,199)	(4,589)	611	1,878
Accumulated other comprehensive loss	4,199	4,589	(611)	(1,878)
Total shareholders' equity	0	$ 0	$ 0	$ 0
Previous Accounting Guidance
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings	2,108,535
Accumulated other comprehensive loss	(281,254)
Total shareholders' equity	$ 1,243,083