v3.25.1
SEGMENT INFORMATION - Schedule of Segment Profitability and Reconciliation to Net Income (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information [Line Items]    
Operating revenues $ 745,826 $ 679,965
Amortization of intangible assets 43,872 38,604
Depreciation and amortization of property, equipment and leasehold improvements 4,746 4,081
Acquisition-related integration and transaction costs 0 1,506
Operating income 377,023 339,382
Other expense (income), net 45,953 43,489
Income before provision for income taxes 331,070 295,893
Provision for income taxes 42,470 39,939
Net income 288,600 255,954
Total reportable segment operating revenues    
Segment Reporting Information [Line Items]    
Operating revenues 678,547 615,722
Adjusted EBITDA expenses 267,125 244,659
Adjusted EBITDA 411,422 371,063
Index    
Segment Reporting Information [Line Items]    
Operating revenues 421,743 373,872
Adjusted EBITDA expenses 110,172 96,112
Adjusted EBITDA 311,571 277,760
Analytics    
Segment Reporting Information [Line Items]    
Operating revenues 172,185 163,966
Adjusted EBITDA expenses 96,155 91,754
Adjusted EBITDA 76,030 72,212
Sustainability and Climate    
Segment Reporting Information [Line Items]    
Operating revenues 84,619 77,884
Adjusted EBITDA expenses 60,798 56,793
Adjusted EBITDA 23,821 21,091
All Other - Private Assets    
Segment Reporting Information [Line Items]    
Operating revenues 67,279 64,243
Adjusted EBITDA $ 14,219 $ 12,510