Annual report [Section 13 and 15(d), not S-K Item 405]

GOODWILL AND OTHER INTANGIBLE ASSETS - Purchased Intangible Assets (Details)

v3.25.4
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