Stockholders' Equity Stock Options (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Sep. 30, 2011	Oct. 01, 2010	Oct. 02, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	$ 2,100,000	$ 800,000	$ 600,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options, Outstanding, Shares, Beginning Balance	15,289
Stock Options, Outstanding, Weighted average exercise price, Beginning Balance	$ 10.50
Granted, Shares	3,414
Granted Weighted average exercise price	$ 24.37
Exercised, Shares	(5,717)
Exercised, Weighted average exercise price	$ 11.05
Canceled/forfeited, Shares	(583)
Canceled/forfeited, Weighted average exercise price	$ 23.73
Weighted average remaining contractual life (in years)	5.0
Aggregate Intrincis value	77,479,000
Stock Options, Exercisable, Shares	4,692
Stock Options, Exercisable, Weighted average exercise price	$ 8.72
Stock Options, Exercisable, Weighted average remaining contractual life (in years)	3.9
Stock Options, Exercisable, Aggregate intrinsic value	43,688,000
Stock Options, Outstanding, Shares, Ending Balance	12,403	15,289
Stock Options, Outstanding, Weighted average exercise price, Ending Balance	$ 13.45	$ 10.50
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 9.63	$ 5.76	$ 3.93
Total Fair Value of Options Vested During the Year	22,100,000	30,200,000	39,100,000
Share-based Compensation [Abstract]
Share-based Compensation	58,338,000	40,741,000	23,466,000
Cost of Sales [Member]
Share-based Compensation [Abstract]
Allocated Share-based Compensation Expense	7,557,000	3,857,000	3,129,000
Research and Development Expense [Member]
Share-based Compensation [Abstract]
Allocated Share-based Compensation Expense	18,100,000	7,419,000	6,195,000
General and Administrative Expense [Member]
Share-based Compensation [Abstract]
Allocated Share-based Compensation Expense	32,681,000	29,465,000	14,142,000
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	90,062,000	40,837,000	20,886,000
Share-based Compensation [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	37,287,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	2.2
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	28,400,000	3,100,000	100,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Intrinsic Value	$ 53,569,000	$ 15,030,000	$ 7,475,000
Share-based Compensation [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 35,852,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1.3

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)

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- Definition

The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-SubTopic 10

-Topic 718

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Number of share options (or share units) exercised during the current period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28,29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Topic 718

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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-Name Accounting Standards Codification

-Topic 505

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-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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