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Income Taxes (Narrative) (Details) (USD $) | 12 Months Ended
--- | ---
Sep. 28, 2012 | Sep. 30, 2011 | Oct. 01, 2010
Income Taxes [Line Items] |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate | 35.00% | 35.00% | 35.00%
Foreign tax rate difference | $ (44,733,000) | $ (24,394,000) | $ (8,889,000)
Impact of the tax holiday | 5,900,000 |  |
Impact of the tax holiday (in dollars per share) | $ 0.03 |  |
Income Tax Credits and Adjustments |  | 6,200,000 |
International restructuring | 0 | 0 | 3,468,000
Income Tax Reconciliation Nondeductible Restructuring Charges Benefit |  |  | 6,300,000
Income Tax Reconciliation Nondeductible Restructuring Charges Provision |  |  | 2,800,000
Valuation Allowance, Amount | 47,000,000 |  |
Tax benefit to recognize if valuation allowance is reversed | 46,600,000 |  |
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Goodwill | 400,000 |  |
Deferred Tax Assets, Tax Credit Carryforwards | 209,000,000 |  |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 74,300,000 |  |
Tax Credit Carryforward, Amount | 37,800,000 |  |
Valuation Allowance Not Recognized | 30,400,000 |  |
Other Tax Carryforward, Gross Amount | 33,600,000 |  |
Tax Credit Carryforward, Expiration Dates | 2032 |  |
Deferred Tax Liabilities, Undistributed Foreign Earnings | 371,500,000 |  |
Unrecognized Tax Benefits | 52,380,000 | 32,136,000 |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 38,800,000 |  |
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions | 9,004,000 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 600,000 |  |
Foreign Country [Member] |  |  |
Income Taxes [Line Items] |  |  |
Valuation Allowance, Amount | 13,400,000 |  |
State and Local Jurisdiction [Member] |  |  |
Income Taxes [Line Items] |  |  |
Valuation Allowance, Amount | 33,600,000 |  |
Other Tax Carryforward, SiGe Acquisition [Member] |  |  |
Income Taxes [Line Items] |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 29,500,000 |  |
Operating Loss Carryforwards, Expiration Dates | 2030 |  |
Other Tax Carryforward, AATI Acquisition [Member] |  |  |
Income Taxes [Line Items] |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 28,100,000 |  |
Operating Loss Carryforwards, Expiration Dates | 2031 |  |
AATI [Domain] |  |  |
Income Taxes [Line Items] |  |  |
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions | 9,700,000 |  |
AATI [Domain] | State and Local Jurisdiction [Member] |  |  |
Income Taxes [Line Items] |  |  |
Valuation Allowance, Amount | $ 3,600,000 |  |

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