Employee Stock-Based Compensation and Benefit Plans (Detail of the Total Stock-Based Compensation Recognized by Income Statement Classification) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	$ 346,751	$ 307,710	$ 278,892
Cost of subscription, support and services
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	18,493	13,253	10,921
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	115,187	108,032	104,553
Sales, marketing and services
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	106,402	102,765	95,535
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	$ 106,669	$ 83,660	$ 67,883