Consolidated Statements Of Shareholders' Equity (USD $) In Thousands, except Share data	Class A Common Stock [Member] Treasury Shares At Cost [Member]	Class B Common Stock [Member] Treasury Shares At Cost [Member]	Class B Common Stock [Member] Stock Employee Compensation Trust (SECT) [Member]	Common Stock [Member] USD ($)	Additional Paid-In Capital [Member] USD ($)	Retained Earnings [Member] USD ($)	Treasury Shares At Cost [Member] USD ($)	Stock Employee Compensation Trust (SECT) [Member] USD ($)	Accumulated Other Comprehensive (Loss) Income [Member] USD ($)	Comprehensive Income (Loss) [Member] USD ($)	Total USD ($)
Beginning of year at Sep. 27, 2008				$ 48,605	$ 311,159	$ 688,585	$ (40,607)	$ (22,179)	$ 8,847
Beginning of year at Sep. 27, 2008	(2,107,949)	(3,305,971)	(507,420)
Sale of Class A Common Stock, net of issuance costs				2,675	72,042
Issuance of treasury shares at more than cost					163
Equity-based compensation expense					5,682
Adjustment to adopt defined benefit pension plan standard, net of income taxes						(991)			142
Class A shares issued related to options							261
Class A shares purchased							(7,387)
Sale of SECT stock to RSP								5,593
Purchase of SECT stock								(2,832)			(2,832)
Adjustment to market - SECT, and other					(7,947)
Adjustment to market - SECT								7,992
Other comprehensive loss									(89,815)
Net earnings						85,045				85,045	85,045
Other comprehensive income (loss) :
Foreign currency translation adjustment										(1,073)	(1,073)
Retirement liability adjustment										(89,062)	(89,062)
Accumulated income (loss) on derivatives adjustment										320	320
COMPREHENSIVE INCOME (LOSS)										(4,770)
TOTAL SHAREHOLDERS' EQUITY				51,280	381,099	772,639	(47,733)	(11,426)	(80,826)		1,065,033
Sale of SECT stock to RSP			205,028
Shares issued related to options	48,938
Shares purchased	(244,688)
Purchase of SECT stock			(96,160)
End of year at Oct. 03, 2009				51,280	381,099	772,639	(47,733)	(11,426)	(80,826)		1,065,033
End of year at Oct. 03, 2009	(2,303,699)	(3,305,971)	(398,552)
Issuance of treasury shares at more than cost					433
Equity-based compensation expense					5,445
Class A shares issued related to options							543
Class A shares purchased							(534)
Sale of SECT stock to RSP								1,732
Purchase of SECT stock								(1,296)			(1,296)
Adjustment to market - SECT, and other					2,399
Adjustment to market - SECT								(2,391)
Other comprehensive loss									(58,502)
Net earnings						108,094				108,094	108,094
Other comprehensive income (loss) :
Foreign currency translation adjustment										(858)	(858)
Retirement liability adjustment										(57,977)	(57,977)
Accumulated income (loss) on derivatives adjustment										333	333
COMPREHENSIVE INCOME (LOSS)										49,592
TOTAL SHAREHOLDERS' EQUITY				51,280	389,376	880,733	(47,724)	(13,381)	(139,328)		1,120,956
Sale of SECT stock to RSP			60,366
Shares issued related to options	101,825
Shares purchased	(19,761)
Purchase of SECT stock			(36,316)
End of year at Oct. 02, 2010				51,280	389,376	880,733	(47,724)	(13,381)	(139,328)		1,120,956
End of year at Oct. 02, 2010	(2,221,635)	(3,305,971)	(374,502)
Beginning of year at Jul. 03, 2010
Net earnings											32,300
Other comprehensive income (loss) :
TOTAL SHAREHOLDERS' EQUITY				51,280							1,120,956
End of year at Oct. 02, 2010				51,280	389,376	880,733	(47,724)	(13,381)	(139,328)		1,120,956
End of year at Oct. 02, 2010	(2,221,635)	(3,305,971)	(374,502)
Issuance of treasury shares at more than cost					17,374
Equity-based compensation expense					6,952
Class A shares issued as consideration for purchase of Animatics							2,495
Class A shares issued related to options							828
Class A shares purchased							(30,078)
Sale of SECT stock to RSP								2,852
Purchase of SECT stock								(3,992)			(3,992)
Adjustment to market - SECT, and other					(1,332)
Adjustment to market - SECT								1,431
Other comprehensive loss									(61,616)
Net earnings						136,021				136,021	136,021
Other comprehensive income (loss) :
Foreign currency translation adjustment										(9,515)	(9,515)
Retirement liability adjustment										(51,792)	(51,792)
Accumulated income (loss) on derivatives adjustment										(309)	(309)
COMPREHENSIVE INCOME (LOSS)										74,405
TOTAL SHAREHOLDERS' EQUITY				51,280	412,370	1,016,754	(74,479)	(13,090)	(200,944)		1,191,891
Sale of SECT stock to RSP			73,611
Class A shares issued as consideration for purchase of Animatics	467,749
Shares issued related to options	155,262
Shares purchased	(794,415)
Purchase of SECT stock			(94,579)
End of year at Oct. 01, 2011				51,280	412,370	1,016,754	(74,479)	(13,090)	(200,944)		1,191,891
End of year at Oct. 01, 2011	(2,393,039)	(3,305,971)	(395,470)
Beginning of year at Jul. 02, 2011
Net earnings											38,161
Other comprehensive income (loss) :
TOTAL SHAREHOLDERS' EQUITY				51,280							1,191,891
End of year at Oct. 01, 2011				$ 51,280							$ 1,191,891
End of year at Oct. 01, 2011		(3,305,971)