Stockholders' Equity Employee and Director Equity Incentive Plans (Details) (USD $) In Thousands, except 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, Number of Shares Authorized	98,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	17,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	12,403,000	15,289,000
Share-based compensation	$ 58,338	$ 40,741	$ 23,466
Total Shared Based Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	12,400,000
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	41,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	16,300,000
Employee incentive plans options contractual life maximum	7
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period, Maximum	4
Equity Incenctive Restricted Stock Awards Vesting	3
Equity Incentive Plan Performance Based Share Awards Vesting	3
Director Long Term Incentive Plan 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,000,000
Employee incentive plans options contractual life maximum	7
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period, Maximum	4
Equity Incenctive Restricted Stock Awards Vesting	3
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	10,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	3,100,000
Share Based Compensation Arrangement By Share Based Payment Award Percent of Payroll	10.00%
Share Based Compensation Arrangement By Share Based Payment Award Percent of Market Price	85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans	500,000	600,000	1,100,000
Share-based compensation	2,500	1,900	1,600
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 1,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	0.3

Employeeincentiveplansoptionscontractuallifemaximum - maximum number of years for the company's stock options before they expire

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Equity Incentive Plan Performance Based Share Awards Vesting - Vesting for performance based awards

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Equity Incenctive Restricted Stock Awards Vesting - number of years to full vest

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ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentOfMarketPrice

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- Definition

ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentofPayroll - the payroll deduction allowed under the plan

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph h

-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

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- Definition

The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

+ References

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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- Definition

The maximum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph 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

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-Paragraph 2

-Subparagraph (a)(3)

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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-SubTopic 10

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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