Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 28, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill are as follows (in thousands):

	Goodwill
Balance as of September 30, 2011	$	663,041
Goodwill recognized through business combinations (Note 3)	133,958
Goodwill adjustments	3,514
Goodwill as of September 28, 2012	$	800,513

Schedule Of Intangible Assets Excluding Goodwill

Intangible assets consist of the following (in thousands):

		As of							As of
	Weighted average amortization period remaining (years)	September 28, 2012							September 30, 2011
		Gross carrying amount		Accumulated amortization			Net carrying amount		Gross carrying amount		Accumulated amortization			Net carrying amount
Customer relationships	3.5	$	78,710	$	(36,242	)	$	42,468	$	57,510	$	(21,828	)	$	35,682
Developed technology and other	3.8	89,366		(42,266		)	47,100		70,046		(27,039		)	43,007
IPR&D	1.4	6,050		(3,177		)	2,873		4,510		(260		)	4,250
Trademarks	Indefinite	1,569		—			1,569		3,869		—			3,869
Total intangible assets		$	175,695	$	(81,685	)	$	94,010	$	135,935	$	(49,127	)	$	86,808

Schedule of Expected Amortization Expense

Annual amortization expense for the next five years related to intangible assets is expected to be as follows (in thousands):

	2013		2014		2015		2016		2017		Thereafter
Amortization expense	$	29,199	$	23,981	$	21,041	$	16,247	$	1,972	$	—