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Stock-Based Compensation (Performance Stock Unit Activity) (Narrative) (Details) (USD $)
Share data in Thousands, unless otherwise specified
12 Months Ended
May 26, 2013
May 27, 2012
May 29, 2011
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting period (years) 4 years    
Performance stock units
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Total stock unit liability $ 16,800,000 $ 31,300,000  
Vesting period (years) 3 years    
Unrecognized compensation cost related to unvested stock options granted 11,100,000    
Unrecognized compensation cost, period of recognition, in years (years) 1 year 8 months 7 days    
Fair market value on grant date 21,500,000    
Employee stock purchase plan
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Percentage of capital stock (percentage) 5.00%    
Investment authorized 5,000    
Shares available for purchase by employees (shares) 3,600    
Percent of fair market value, common stock purchased by employees (percentage) 85.00%    
Cash received from employees who acquired shares under ESPP 7,300,000 7,200,000 7,400,000
Minimum
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting period (years) 1 year    
Minimum | Performance stock units
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting percentage (percentage) 0.00%    
Maximum
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting period (years) 4 years    
Maximum | Performance stock units
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting percentage (percentage) 150.00%    
Other Current Liabilities | Performance stock units
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Current stock unit liability 9,000,000 18,900,000  
Other Liabilities | Performance stock units
     
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Noncurrent stock unit liability $ 7,800,000 $ 12,400,000