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Share Plans (Narrative) (Details) (USD $)
Share data in Millions, unless otherwise specified
12 Months Ended
Sep. 27, 2013
Sep. 28, 2012
Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation cost $ 16,200,000 $ 11,100,000 $ 10,600,000
Tax benefit from share-based compensation cost 5,800,000 3,800,000 3,400,000
Share Options
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years    
Expiration period 10 years    
Unrecognized compensation cost, share options 22,000,000    
Weighted-average period to recognize unrecognized compensation cost, share options 2 years 3 months    
Restricted Share Units
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years    
Weighted-average period to recognize unrecognized compensation cost, share options 2 years 5 months    
Unrecognized compensation cost, restricted share units 18,200,000    
Employee Stock Purchase Plan
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
ESPP employer match - percentage of employee payroll deduction 15.00%    
ESPP employer match - maximum employee contribution 25,000    
Post-Separation | Restricted Share Units
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of restricted share units granted in period 7,300,000    
Fair value of restricted share units vested in period $ 100,000    
Fiscal 2014 | Employee Stock Purchase Plan
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
ESPP employer match - percentage of employee payroll deduction 25.00%    
2013 Plan
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized under 2013 Plan 5.7