Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015	Apr. 03, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 378,411	$ 318,006
Less accumulated amortization	(98,876)	(74,340)
Intangible assets-net	279,535	243,666
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	164,365	162,536
Less accumulated amortization	(64,500)		$ (39,400)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	202,646	144,070
Less accumulated amortization	(34,400)		$ (12,800)
In-Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	8,000	8,000
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 3,400	$ 3,400

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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