Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
1 Months Ended 3 Months Ended
Jan. 31, 2011
May 31, 2012
Guarantor Obligations [Member]
Feb. 29, 2012
Guarantor Obligations [Member]
May 31, 2012
Property Lease Guarantee [Member]
Loss Contingencies [Line Items]        
Percentage of Business Sold 80.10%      
Commitments and Contingencies (Textual)        
Carrying amount of indemnification liabilities   $ 22.4 $ 22.4  
Potential future payments   303.5   39.2
Amount subject to recovery from third parties under recourse provisions   $ 282.1