Segment Information (Subscription Revenues) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 3,217,170	$ 3,236,700	$ 3,010,564
Subscription
Segment Reporting Information [Line Items]
Revenues	1,553,775	1,114,798	650,810
SaaS
Segment Reporting Information [Line Items]
Revenues	857,340	540,807	390,774
Non-SaaS
Segment Reporting Information [Line Items]
Revenues	$ 696,435	$ 573,991	$ 260,036