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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2013 Successor [Member]	Nov. 30, 2012 Predecessor [Member]
Total gross unrecognized tax benefits	$ 135.5	$ 110.5
Unrecognized tax benefits that would impact effective tax rate in future	88.7	72.4
Accrued interest on unrecognized tax benefits	$ 18.9	$ 15.3

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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