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Pensions And Other Postretirement Benefits (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Sep. 27, 2014
plan
Sep. 28, 2013
Sep. 29, 2012
Defined Benefit Plan Disclosure [Line Items]      
Number of defined benefit plans 9    
Defined contribution retirement programs, expenses recognized $ 53 $ 50 $ 47
Number of defined benefit plans with accumulated benefit obligations in excess of plan assets 7    
Postretirement medical obligation consisting of fixed annual payments 22    
Postretirement medical obligation consisting of payments determined by healthcare cost trend 141    
Healthcare cost trend rate, assumed, retirees who do not yet qualify for Medicare 7.30%    
Healthcare cost trend rate, assumed, retirees who do qualify for Medicare 6.50%    
Healthcare cost trend rate, ultimate rate 5.00%    
Defined benefit pension plan assets 1,650 85  
Expected contributions to pension plans for fiscal 2014 14    
Defined benefit plans funding 9 8 8
Plan asset allocations 100.00% 100.00%  
Multiemployer Plans, Pension [Member] | Bakery and Confectionary Union & Industry International Pension Fund [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Multiemployer plan, contributions (less than) 1    
Multiemployer Plans, Pension [Member] | Bakery and Confectionary Union & Industry International Pension Fund [Member] | Pension and Other Postretirement Plans, Contributions, Total [Member] | Multiemployer Plans Concentration Risk [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Concentration, Percentage (less than) 5.00%    
Funded Qualified Pension Plan [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Number of defined benefit plans 6    
Accumulated benefit obligation 1,849 86  
Amounts expected to be reclassified to earnings within next 12 months 2    
Defined benefit pension plan assets 1,647 85 86
Defined benefit plans funding 6 6  
Funded Qualified Pension Plan, Frozen and Noncontributory [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Number of defined benefit plans 5    
Unfunded Non-Qualified Pension Plan [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Number of defined benefit plans 3    
Amounts expected to be reclassified to earnings within next 12 months 4    
Defined benefit pension plan assets 3 0 0
Defined benefit plans funding 3 2  
Postretirement Health Coverage [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Number of defined benefit plans 6    
Postretirement Health Coverage, Fixed Annual Payments [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Number of defined benefit plans 2    
Foreign Subsidiary Pension Benefit Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit pension plan assets $ 15 $ 14  
Fixed Income Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Plan asset allocations 80.50% 79.10%  
Equity Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Plan asset allocations 12.00%