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Income Taxes (Reasons For Differences Between Statutory Federal Tax Rate And Effective Income Tax Rate) (Details)
12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
Income Tax Disclosure [Abstract]      
Federal income tax rate 35.00% 35.00% 35.00%
State income taxes 2.80% 2.40% 1.50%
Unrecognized tax benefits, net (4.70%) (0.20%) 0.60%
Domestic production deduction (4.00%) (3.20%) (1.80%)
Foreign rate differences and valuation allowances 2.80% 0.30% 1.80%
Other (0.30%) (1.70%) (0.70%)
Effective income tax rate 31.60% 32.60% 36.40%