Quarterly report pursuant to Section 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, 2024
Dec. 31, 2023
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross $ 3,160.7 $ 3,219.9
Accumulated Amortization (1,470.4) (1,361.1)
Net 1,690.3 1,858.8
Purchased data files    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 1,141.8 1,158.5
Accumulated Amortization (642.1) (604.2)
Net 499.7 554.3
Customer relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 1,028.8 1,053.5
Accumulated Amortization (517.6) (484.2)
Net 511.2 569.3
Proprietary database    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 705.6 705.8
Accumulated Amortization (199.7) (171.5)
Net 505.9 534.3
Acquired software and technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 218.5 222.5
Accumulated Amortization (89.3) (75.4)
Net 129.2 147.1
Trade names, non-compete agreements and other intangible assets    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 66.0 79.6
Accumulated Amortization (21.7) (25.8)
Net $ 44.3 $ 53.8