Deferred Revenue - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, current	$ 329,095	$ 305,169
Total deferred revenue, non-current	236,987	221,829
Total deferred revenue	566,082	526,998
Deferred revenue in connection with acquisitions	21,100
Product
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, current	8,083	8,200
Total deferred revenue, non-current	3,231	3,051
Subscription and services
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, current	321,012	296,969
Total deferred revenue, non-current	$ 233,756	$ 218,778

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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