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Benefit Plans (Narrative) (Details) - USD ($)
12 Months Ended
Oct. 01, 2016
Oct. 03, 2015
Sep. 27, 2014
Feb. 28, 2008
Defined Contribution Plan, Employer Discretionary Contribution Amount 4.00%      
Defined Contribution Plan, Cost Recognized $ 7,400,000 $ 7,200,000 $ 7,200,000  
Stock-based compensation expense 19,341,000 13,252,000 12,970,000  
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation 0 0 0  
Share-based Payment Award Accelerated Compensation Cost 5,200,000      
Supplemental Employee Retirement Plan [Member]        
Deferred Compensation Liability, Classified, Noncurrent 9,800,000 6,900,000    
Deferred Compensation Plan Assets 9,500,000 8,300,000    
Contributions to participants' SERP accounts $ 500,000 500,000 700,000  
Other Postretirement Benefit Plan [Member]        
Term of deferred compensation agreements 15 years      
Deferred Compensation Liability, Classified, Noncurrent $ 600,000 1,300,000    
Deferred Compensation Plan Assets 9,300,000 8,900,000    
Deferred Compensation Arrangement with Individual, Compensation Expense 800,000 $ 900,000 $ 800,000  
2016 Omnibus Incentive Plan [Member]        
Maximum number of shares authorized under the plan       3,200,000
Long-term cash awards $ 4,000,000      
Employee Stock Option [Member] | 2008 Long Term Incentive Plan [Member]        
Granted, Number of Options/SARs   100,000 200,000  
Employee Stock Option [Member] | 2016 Omnibus Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years      
Granted, Number of Options/SARs 200,000      
Stock Appreciation Rights (SARs) [Member] | 2008 Long Term Incentive Plan [Member]        
Granted, Number of Options/SARs   100,000 100,000  
Stock Appreciation Rights (SARs) [Member] | 2016 Omnibus Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 7 years      
Restricted Stock Units (RSUs) [Member]        
Unrecognized compensation cost $ 15,800,000      
Unrecognized compensation cost, weighted average period of recognition, years 1 year 9 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  
Restricted Stock Units (RSUs) [Member] | 2016 Omnibus Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 400,000      
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 100,000 100,000 0  
Unrecognized compensation cost $ 2,400,000      
Unrecognized compensation cost, weighted average period of recognition, years 1 year 11 months      
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 300,000      
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  
Performance Shares [Member] | 2016 Omnibus Incentive Plan [Member]        
PSUs, Award Vesting Period 3 years      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 100,000      
Employee Stock Option and Stock Appreciation Rights [Member]        
Granted, Number of Options/SARs 229,000 221,000 318,000  
Weighted Average Grant Date Fair Value of Options/SARs Granted $ 12.82 $ 14.55 $ 15.78  
Fair Value of Options/SARs Vested $ 3,600,000 $ 5,500,000 $ 6,100,000  
Total intrinsic value of options and SARs exercised 7,400,000 $ 7,700,000 $ 13,500,000  
Unrecognized compensation cost $ 2,600,000      
Unrecognized compensation cost, weighted average period of recognition, years 1 year 1 month 4 days