Deferred Revenue (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Total current deferred revenue	$ 374,033	$ 349,173
Total long-term deferred revenue	424,635	386,960
Deferred maintenance revenue
Total current deferred revenue	158,939	165,902
Total long-term deferred revenue	59,604	59,955
Unearned revenue
Total current deferred revenue	215,094	183,271
Total long-term deferred revenue	$ 365,031	$ 327,005

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.

The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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