Business and Summary of Significant Accounting Policies - Perpetual License and Maintenance Revenue (Details) - Perpetual license and maintenance revenue	6 Months Ended
Jun. 30, 2019
Disaggregation of Revenue [Line Items]
License and maintenance period	1 year
Estimated maintenance renewal period	4 years
Economic life of perpetual license contracts	5 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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