Deferred Revenue - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current portion	$ 305,169	$ 203,877
Deferred revenue, non-current portion	221,829	148,666
Total deferred revenue	526,998	352,543
Product
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current portion	8,200	10,718
Deferred revenue, non-current portion	3,051	4,891
Subscription and services
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current portion	296,969	193,159
Deferred revenue, non-current portion	$ 218,778	$ 143,775