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Income Taxes (Significant Differences Between Statutory Federal Tax Rate And Effective Income Tax Rate) (Details)
12 Months Ended
Oct. 02, 2015
Oct. 03, 2014
Sep. 27, 2013
Income Taxes [Abstract]      
Statutory U.S. federal income tax rate 35.00% 35.00% 35.00%
Foreign rate differential (2.40%) (0.50%) (4.10%)
State income tax, net of federal benefit 2.40% 4.40% 4.50%
Tax credit 18.80% 6.30% 3.10%
Deferred tax asset valuation allowance 10.00% (4.30%) (11.50%)
Unrecognized tax benefit 1.70% 5.40%  
Goodwill impairment 0.00% 10.40%  
Other 4.70% 3.60% 0.80%
Effective income tax rate, continuing operations, Total 32.60% 47.70% 21.60%