| 
           Commitments and Contingencies (Details 1) (USD $) 
        In Millions, unless otherwise specified  | 
        
           May 31, 2013 
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|---|---|
| Commitments and Contingencies Disclosure [Abstract] | |
| Operating Leases, Future Minimum Payments Due in Fiscal 2014 | $ 36.9 | 
| Operating Leases, Future Minimum Payments, Due in Fiscal 2015 | 33.1 | 
| Operating Leases, Future Minimum Payments, Due in Fiscal 2016 | 24.9 | 
| Operating Leases, Future Minimum Payments, Due in Fiscal 2017 | 19.5 | 
| Operating Leases, Future Minimum Payments, Due in Fiscal 2018 | 13.4 | 
| Operating Leases, Future Minimum Payments, Due Thereafter | $ 15.6 | 
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- Details 
          
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- Definition 
          Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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