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GOODWILL AND OTHER INTANGIBLE ASSETS - Purchased Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 3,021.8 | $ 3,219.9
Accumulated Amortization | (1,500.8) | (1,361.1)
Net | 1,521.0 | 1,858.8
Purchased data files |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 1,111.9 | 1,158.5
Accumulated Amortization | (669.5) | (604.2)
Net | 442.4 | 554.3
Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 937.7 | 1,053.5
Accumulated Amortization | (484.2) | (484.2)
Net | 453.5 | 569.3
Proprietary database |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 704.9 | 705.8
Accumulated Amortization | (227.6) | (171.5)
Net | 477.3 | 534.3
Acquired software and technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 217.6 | 222.5
Accumulated Amortization | (106.3) | (75.4)
Net | 111.3 | 147.1
Trade names, non-compete agreements and other intangible assets |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 49.7 | 79.6
Accumulated Amortization | (13.2) | (25.8)
Net | $ 36.5 | $ 53.8

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