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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
May 25, 2012
May 27, 2011
May 31, 2013
Income Taxes (Textual) [Abstract]      
Effective tax rate 30.40% 35.80%  
Unrecognized tax benefits $ 29.6    
Income tax expenses affected by unrecognized tax benefits if recognized 18.6    
Decreased unrecognized tax benefit     11.0
Reductions in unrecognized tax benefits resulting from lapse of statute 1    
Accrued Interest and penalties on unrecognized tax benefit 8.4    
Open tax years by major tax jurisdiction The Corporation is subject to examination by the U.S. Internal Revenue Service and various U.S. state and local Jurisdictions for tax years 1996 to the present.    
Maximum [Member]
     
Deferred Tax Liability Not Recognized [Line Items]      
Interest and penalties on unrecognized tax benefit $ 0.1