Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) (USD $)
In Millions, unless otherwise specified
1 Months Ended
Jan. 31, 2011
Nov. 30, 2012
Guarantor Obligations [Member]
Feb. 29, 2012
Guarantor Obligations [Member]
Nov. 30, 2012
Property Lease Guarantee [Member]
Loss Contingencies [Line Items]        
Percentage of business sold 80.10%      
Carrying amount of indemnification liabilities   $ 22.3 $ 22.4  
Potential future payments   303.4   39.2
Amount subject to recovery from third parties under recourse provisions   $ 282.0   $ 0