Quarterly report [Sections 13 or 15(d)]

GOODWILL AND INTANGIBLE ASSETS - Schedule of Purchased Intangible Assets (Details)

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GOODWILL AND INTANGIBLE ASSETS - Schedule of Purchased Intangible Assets (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross $ 3,061.3 $ 3,021.8
Accumulated Amortization (1,692.8) (1,500.8)
Net 1,368.5 1,521.0
Purchased data files    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 1,135.2 1,111.9
Accumulated Amortization (742.7) (669.5)
Net 392.5 442.4
Customer relationships    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 959.5 937.7
Accumulated Amortization (540.4) (484.2)
Net 419.1 453.5
Proprietary database    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 699.9 704.9
Accumulated Amortization (265.3) (227.6)
Net 434.6 477.3
Acquired software and technology    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 215.8 217.6
Accumulated Amortization (130.7) (106.3)
Net 85.1 111.3
Trade names, non-compete agreements and other intangible assets    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 50.9 49.7
Accumulated Amortization (13.7) (13.2)
Net $ 37.2 $ 36.5