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Segment Information Revenues By Region (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Revenues from External Customers [Line Items]        
Revenues $ 489,412 $ 509,594 $ 1,008,986 $ 1,108,009
United States and Canada [Member]        
Revenues from External Customers [Line Items]        
Revenues 308,673 369,862 634,209 755,187
Europe, Middle East, and Africa [Member]        
Revenues from External Customers [Line Items]        
Revenues 150,851 107,799 311,220 274,783
Other [Member]        
Revenues from External Customers [Line Items]        
Revenues $ 29,888 $ 31,933 $ 63,557 $ 78,039