v3.22.1
Segment Information - Operating Revenues by Geographic Area (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues $ 559,945 $ 478,423
United States [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 233,356 196,689
Other [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 22,467 20,173
Total Americas [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 255,823 216,862
United Kingdom [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 86,986 79,081
Other [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 131,573 106,194
Europe, the Middle East and Africa ("EMEA") [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 218,559 185,275
Japan [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 23,190 21,642
Other [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues 62,373 54,644
Total Asia & Australia [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Operating revenues $ 85,563 $ 76,286