Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Sep. 28, 2013		Jun. 29, 2013		Mar. 30, 2013		Dec. 29, 2012		Sep. 29, 2012		Jun. 23, 2012		Mar. 24, 2012		Dec. 24, 2011		Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011
Amounts Reclassified Out Of Accumulated Other Comprehensive Income Loss [Abstract]
Net (loss) income	$ (1,113,902)	[1]	$ (10,950)	[1]	$ (51,104)	[1]	$ 3,118	[1]	$ (77,767)	[2],[3]	$ 23,594	[2]	$ (40,273)	[2]	$ 20,812	[2]	$ (1,172,838)	$ (73,634)	$ 157,150
Foreign currency translation adjustment																	1,373	6,217	1,088
Adjustment to minimum pension liability, net																	134	(1,484)	764
Unrealized gain on available-for-sale security																	12,094	62
Other comprehensive income																	13,601	4,795	1,852
Comprehensive (loss) income																	$ (1,159,237)	$ (68,839)	$ 159,002

[1] Net income in the first quarter of fiscal 2013 includes a gain on the sale of intellectual property of $53.9 million. Net loss in the second quarter of fiscal 2013 includes restructuring charges of $12.5 million and a debt extingushment loss of $3.2 million. Net loss in the third quarter of fiscal 2013 includes restructuring charges of $6.7 million. Net loss in the fourth quarter of fiscal 2013 includes a goodwill impairment charge of $1.1 billion, restructuring charges of $9.7 million and a debt extinguishment loss of $6.0 million.

[2] Net loss in the second quarter of fiscal 2012 includes a charge for the discontinuance of the Adiana product line of $18.3 million and the loss on debt extinguishment of $42.3 million. See Note 5 for further discussion. Net loss in the fourth quarter of fiscal 2012 includes additional amortization expense from the Gen-Probe acquisition of $29.7 million, direct acquisition transaction costs of $30.7 million, and restructuring charges of $16.7 million, a goodwill impairment charge of $5.8 million and an in-process research and development charge of $4.5 million.

[3] The fourth quarter was a 14-week quarter compared to all other quarters which were 13-week quarters.