Segment Information Revenues By Region (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues from External Customers [Line Items]
Revenues	$ 519,574	$ 598,415
United States and Canada [Member]
Revenues from External Customers [Line Items]
Revenues	325,536	385,325
Europe, Middle East, and Africa [Member]
Revenues from External Customers [Line Items]
Revenues	160,369	166,984
Other [Member]
Revenues from External Customers [Line Items]
Revenues	$ 33,669	$ 46,106