Shareholders' Equity (Changes in Shareholders' Equity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended						6 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014 Class A Common Stock [Member]	Mar. 29, 2014 Class B Common Stock [Member]	Mar. 29, 2014 Common Stock [Member]	Sep. 28, 2013 Common Stock [Member]	Mar. 29, 2014 Additional Paid-In Capital [Member]	Mar. 29, 2014 Retained Earnings [Member]	Mar. 29, 2014 Treasury Stock [Member]	Mar. 29, 2014 Stock Employee Compensation Trust (Sect) [Member]	Mar. 29, 2014 Accumulated Other Comprehensive (Loss) Income [Member]
Shareholders' Equity [Line Items]
Beginning of Period			$ 1,535,765				$ 51,280	$ 51,280	$ 447,478	$ 1,289,713	$ (83,003)	$ (35,545)	$ (134,158)
Equity-based compensation expense									4,992
Issuance of treasury shares at more than cost									431
Adjustment To Marker Sect And Other									3,936
Net earnings	37,725	36,527	69,822	70,645						69,822
Issuance of treasury shares											766
Purchase of treasury shares											(25,526)
Issuance of stock held by Stock Employee Compensation Trust												1,144
Purchase of stock held by Stock Employee Compensation Trust												(4,634)
Adjustment to market - SECT												(2,591)
Other Comprehensive Income (Loss), Net of Tax	1,287	(17,916)	9,111	(6,901)									9,111
End of Period	$ 1,593,216		$ 1,593,216				$ 51,280	$ 51,280	$ 456,837	$ 1,359,535	$ (107,763)	$ (41,626)	$ (125,047)
Common Stock, Beginning of Period					43,613,060	7,666,653
Conversion of Class B to Class A, Shares					3,959	(3,959)
Common Stock, End of Period					43,617,019	7,662,694
Treasury Stock, Beginning of Period					(2,004,262)	(3,305,971)
Issuance of treasury shares, Shares					151,155	0
Purchase of treasury shares, Shares					(396,520)	(3,640)
Treasury Stock, End of Period					(2,249,627)	(3,309,611)
SECT, Beginning of Period						(610,223)
Issuances of stock held by Stock Employee Compensation Trust, Shares						18,444
Purchase of stock held by Stock Employee Compensation Trust, Shares						(71,905)
SECT, End of Period						(663,684)
TOTAL SHAREHOLDERS' EQUITY, Shares					41,367,392	3,689,399