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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | |
|---|---|---|
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Nov. 30, 2011
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May 31, 2011
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| Commitments and Contingencies (Textuals) [Abstract] | ||
| Lines of credit amount outstanding | $ 0 | |
| Irrevocable standby letters of credit amount available | 47.4 | 47.4 |
| Irrevocable standby letters of credit amount outstanding | 0 | |
| Expiry date range of letters of credit | July 2012 to December 2012 | |
| Commitments to purchase capital assets | 8.5 | 6.0 |
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JP Morgan Chase Bank, N.A. [Member]
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| Lines of credit | ||
| Amount available | 350 | |
| Expiration date | February 2012 | |
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Bank of America, N.A. [Member]
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| Lines of credit | ||
| Amount available | 250 | |
| Expiration date | February 2012 | |
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PNC Bank, National Association [Member]
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| Lines of credit | ||
| Amount available | 150 | |
| Expiration date | February 2012 | |
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Wells Fargo Bank, National Association [Member]
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| Lines of credit | ||
| Amount available | $ 150 | |
| Expiration date | February 2012 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Commitments to purchase capital assets. No definition available.
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| X | ||||||||||
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- Definition
Expiry date range of letters of credit. No definition available.
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| X | ||||||||||
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- Definition
Irrevocable standby letters of credit amount available. No definition available.
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| X | ||||||||||
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- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount borrowed under the credit facility as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Reflects when the credit facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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