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
Jun. 30, 2025
Dec. 31, 2024
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross $ 3,056.9 $ 3,021.8
Accumulated Amortization (1,631.4) (1,500.8)
Net 1,425.5 1,521.0
Purchased data files    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 1,133.9 1,111.9
Accumulated Amortization (721.6) (669.5)
Net 412.3 442.4
Customer relationships    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 954.3 937.7
Accumulated Amortization (521.4) (484.2)
Net 432.9 453.5
Proprietary database    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 701.0 704.9
Accumulated Amortization (251.8) (227.6)
Net 449.2 477.3
Acquired software and technology    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 217.4 217.6
Accumulated Amortization (123.4) (106.3)
Net 94.0 111.3
Trade names, non-compete agreements and other intangible assets    
Intangible Asset, Acquired, Finite-Lived [Line Items]    
Gross 50.3 49.7
Accumulated Amortization (13.2) (13.2)
Net $ 37.1 $ 36.5