Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) (Guarantor Obligations [Member], USD $)
In Millions, unless otherwise specified
Aug. 31, 2013
Feb. 28, 2013
Guarantor Obligations [Member]
   
Loss Contingencies [Line Items]    
Carrying amount of indemnification liabilities $ 15.1 $ 15.1
Potential future payments 296.2  
Amount subject to recovery from third parties under recourse provisions $ 281.9