Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Total USD ($)	Common Stock And Additional Paid in Capital [Member] USD ($)	Number of Common Shares [Member]	Treasury Stock [Member] USD ($)	Number of Treasury Shares [Member]	Accumulated Other Comprehensive Income [Member] USD ($)	Accumulated Deficit [Member] USD ($)
Stockholders' Equity Attributable to Parent at Sep. 27, 2008	$ 673,488	$ 5,997,106		$ (184,725)		$ 55,777	$ (5,194,670)
Treasury Stock, Shares at Sep. 27, 2008					(3,179)
Common Stock, Shares, Issued at Sep. 27, 2008			91,680
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances under stock plans			234
Cumulative Translation Adjustment	11,545					11,545
Unrealized Loss On Derivative Financial Instruments, Net of Tax	(10,322)					(10,322)
Changes In Unrecognized Net Actuarial Loss And Unrecognized Transition Costs, Net of Tax	(4,650)					(4,650)
Stock-based Compensation	15,994	15,994
Repurchases of Treasury Stock, Value	(29,163)	(168)		(28,995)
Repurchases Of Treasury Stock, Shares					(10,169)
Net Income (loss)	(137,822)						(137,822)
Stockholders' Equity Attributable to Parent at Oct. 03, 2009	519,070	6,012,932		(213,720)		52,350	(5,332,492)
Common Stock, Shares, Issued at Oct. 03, 2009			91,914
Treasury Stock, Shares at Oct. 03, 2009					(13,348)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances under stock plans			1,160
Issuances under stock plans, value	3,821	3,821
Cumulative Translation Adjustment	10,996					10,996
Unrealized Loss On Derivative Financial Instruments, Net of Tax	(5,373)					(5,373)
Changes In Unrecognized Net Actuarial Loss And Unrecognized Transition Costs, Net of Tax	(3,756)					(3,756)
Stock-based Compensation	15,167	15,167
Repurchases of Treasury Stock, Value	(759)	51		(810)
Repurchases of Treasury Stock, Shares					(4)
Net Income (loss)	122,435						122,435
Stockholders' Equity Attributable to Parent at Oct. 02, 2010	661,601	6,031,971		(214,530)		54,217	(5,210,057)
Common Stock, Shares, Issued at Oct. 02, 2010	93,074		93,074
Treasury Stock, Shares at Oct. 02, 2010	13,352				(13,352)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances under stock plans			961
Issuances under stock plans, value	4,603	4,603
Cumulative Translation Adjustment	5,419					5,419
Unrealized Loss On Derivative Financial Instruments, Net of Tax	6,978					6,978
Changes In Unrecognized Net Actuarial Loss And Unrecognized Transition Costs, Net of Tax	4,124					4,124
Stock-based Compensation	18,896	18,896
Repurchases of Treasury Stock, Value	(21)	(723)		702
Repurchases of Treasury Stock, Shares					51
Net Income (loss)	68,917						68,917
Stockholders' Equity Attributable to Parent at Oct. 01, 2011	$ 770,517	$ 6,054,747		$ (213,828)		$ 70,738	$ (5,141,140)
Common Stock, Shares, Issued at Oct. 01, 2011	94,035		94,035
Treasury Stock, Shares at Oct. 01, 2011	13,301				(13,301)