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GOODWILL AND OTHER INTANGIBLE ASSETS - Purchased Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross | $ 3,048.8 | $ 3,021.8
Accumulated Amortization | (1,717.5) | (1,500.8)
Net | 1,331.3 | 1,521.0
Purchased data files |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross | 1,141.2 | 1,111.9
Accumulated Amortization | (767.6) | (669.5)
Net | 373.6 | 442.4
Customer relationships |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross | 922.1 | 937.7
Accumulated Amortization | (523.2) | (484.2)
Net | 398.9 | 453.5
Proprietary database |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross | 720.2 | 704.9
Accumulated Amortization | (272.6) | (227.6)
Net | 447.6 | 477.3
Acquired software and technology |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross | 215.9 | 217.6
Accumulated Amortization | (139.4) | (106.3)
Net | 76.5 | 111.3
Trade names, non-compete agreements and other intangible assets |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross | 49.4 | 49.7
Accumulated Amortization | (14.7) | (13.2)
Net | $ 34.7 | $ 36.5

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