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Benefit Plans (Narrative) (Details) - USD ($)
12 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Sep. 28, 2013
Feb. 28, 2008
Defined Contribution Plan, Employer Discretionary Contribution Amount 4.00%      
Defined Contribution Plan, Cost Recognized $ 8,200,000 $ 7,200,000 $ 6,600,000  
Compensation expense 13,300,000 13,000,000 11,800,000  
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation 0 0 0  
Supplemental Employee Retirement Plan [Member]        
Deferred Compensation Liability, Classified, Noncurrent 6,900,000 6,600,000    
Deferred Compensation Plan Assets 8,300,000 10,900,000    
Contributions to participants' SERP accounts $ 500,000 700,000 400,000  
Other Postretirement Benefit Plan [Member]        
Term of deferred compensation agreements 15 years      
Deferred Compensation Liability, Classified, Noncurrent $ 1,300,000 2,000,000    
Deferred Compensation Plan Assets 8,900,000 8,500,000    
Deferred Compensation Arrangement with Individual, Compensation Expense 900,000 $ 800,000 $ 800,000  
2008 Long Term Incentive Plan [Member]        
Maximum number of shares authorized under the plan       5,500,000
Long-term cash awards $ 4,000,000      
Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years      
Employee Stock Option [Member] | 2008 Long Term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 100,000 200,000 400,000  
Stock Appreciation Rights (SARs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 7 years      
Stock Appreciation Rights (SARs) [Member] | 2008 Long Term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 100,000 100,000 100,000  
Restricted Stock Units (RSUs) [Member]        
Unrecognized compensation cost $ 12,200,000      
Unrecognized compensation cost, weighted average period of recognition, years 1 year 7 months      
Restricted Stock Units (RSUs) [Member] | 2008 Long Term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 200,000 200,000 300,000  
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 100,000 100,000    
Unrecognized compensation cost $ 2,800,000      
Unrecognized compensation cost, weighted average period of recognition, years 2 years      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 0      
Performance Shares [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 0      
Performance Shares [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 200,000      
Performance Shares [Member] | 2008 Long Term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 100,000 100,000    
Employee Stock Option and Stock Appreciation Rights [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 221,000 318,000 515,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 14.55 $ 15.78 $ 11.88  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 5,500,000 $ 6,100,000 $ 7,300,000  
Total intrinsic value of options and SARs exercised 7,700,000 $ 13,500,000 $ 4,300,000  
Unrecognized compensation cost $ 3,400,000      
Unrecognized compensation cost, weighted average period of recognition, years 1 year 11 months