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Revenue Recognition and Deferred Program Fee Revenue - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2007 Up-front Payments Arrangement	Dec. 31, 2008 License Fees	May 31, 2008 License Fees
Deferred Revenue Arrangement [Line Items]
Deferred program fee revenue	$ 30.0	$ 3.0	$ 3.0

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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