SEGMENT INFORMATION - Operating Revenues by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	$ 745,826	$ 679,965
Total Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	336,100	311,033
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	302,374	280,675
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	33,726	30,358
Total EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	292,817	264,978
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	123,714	113,294
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	169,103	151,684
Total Asia & Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	116,909	103,954
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	30,202	26,573
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenues	$ 86,707	$ 77,381