Share-Based Compensation - Summary of Share-Based Compensation Expense Related to Share-Based Awards (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 59,967	$ 52,740	$ 37,348
Excess tax benefit	(29,819)	(32,487)	(40,624)
Net decrease (increase) in net income	30,148	20,253	(3,276)
Cost of software services, maintenance and subscriptions
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	15,002	13,588	9,415
Selling, general and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 44,965	$ 39,152	$ 27,933

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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