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