Stock-Based Compensation (Stock Compensation Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	$ 3,446,000	$ 2,852,000	$ 10,454,000	$ 8,441,000
Total stock-based compensation cost capitalized as part of inventory	500,000	400,000	1,700,000	1,400,000
Total stock-based compensation cost amortized into income	600,000	500,000	1,600,000	1,300,000
Total compensation cost, unvested stock-based awards granted but not yet recognized	19,500,000		19,500,000
Total compensation cost, unvested stock-based awards granted, but not yet recognized, forfeitures	1,000,000		1,000,000
Total compensation cost, weighted-average period of amortization (in years)			1 year 1 month 6 days
Excess tax benefits as cash flow from financing activites			0	2,715,000
Cost of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	576,000	453,000	1,605,000	1,263,000
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	455,000	407,000	1,398,000	1,231,000
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	3,610,000	3,266,000	11,274,000	9,814,000
Income tax benefit
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated stock-based compensation expense	(1,195,000)	(1,274,000)	(3,823,000)	(3,867,000)
Employee Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total compensation cost, unvested stock-based awards granted but not yet recognized	500,000		500,000
Total compensation cost, weighted-average period of amortization (in years)			6 months
PeriodEnd [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation cost capitalized as part of inventory			$ 700,000	$ 500,000