v3.24.1.u1
SEGMENT INFORMATION - Operating Revenues by Reportable Segment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]    
Operating revenues $ 679,965 $ 592,218
Index    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Operating revenues 373,872 339,382
Analytics    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Operating revenues 163,966 147,070
ESG and Climate    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Operating revenues 77,884 67,058
All Other - Private Assets    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Operating revenues $ 64,243 $ 38,708