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Retirement Plans (Schedule Of Plan Asset Allocation) (Details)
12 Months Ended
Sep. 27, 2015
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 100.00%
Asset Allocation, Target, Equity securities 100.00%
Domestic Equity Member  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 25.00%
Asset Allocation, Target, Equity securities 25.00%
Asset Allocation, Minimum, Equity securities 15.00%
Asset Allocation, Maximum, Equity securities 35.00%
International Equity Member  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 27.00%
Asset Allocation, Target, Equity securities 25.00%
Asset Allocation, Minimum, Equity securities 15.00%
Asset Allocation, Maximum, Equity securities 35.00%
Core Fixed Funds Member  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 27.00%
Asset Allocation, Target, Equity securities 25.00%
Asset Allocation, Minimum, Equity securities 20.00%
Asset Allocation, Maximum, Equity securities 30.00%
Real Return Bonds Member  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 0.00%
Asset Allocation, Target, Equity securities 3.00%
Asset Allocation, Minimum, Equity securities 0.00%
Asset Allocation, Maximum, Equity securities 10.00%
Alternative Investments Member  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 4.00%
Asset Allocation, Target, Equity securities 5.00%
Asset Allocation, Minimum, Equity securities 0.00%
Asset Allocation, Maximum, Equity securities 10.00%
Real Estate [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 12.00%
Asset Allocation, Target, Equity securities 8.00%
Asset Allocation, Minimum, Equity securities 0.00%
Asset Allocation, Maximum, Equity securities 10.00%
High Yield [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 2.00%
Asset Allocation, Target, Equity securities 5.00%
Asset Allocation, Minimum, Equity securities 0.00%
Commodity Contract [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Percentage of Plan Assets, Equity securities 3.00%
Asset Allocation, Target, Equity securities 4.00%
Asset Allocation, Minimum, Equity securities 0.00%
Asset Allocation, Maximum, Equity securities 10.00%