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
Sep. 30, 2022
Dec. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross $ 2,901.7 $ 2,813.4
Accumulated Amortization (1,044.3) (915.4)
Net 1,857.4 1,898.0
Purchased data files    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 1,073.0 1,103.1
Accumulated Amortization (501.9) (466.0)
Net 571.1 637.1
Customer relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 863.0 805.2
Accumulated Amortization (382.7) (354.9)
Net 480.3 450.3
Proprietary database    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 706.5 710.2
Accumulated Amortization (101.0) (59.3)
Net 605.5 650.9
Acquired software and technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 221.8 160.0
Accumulated Amortization (36.8) (18.9)
Net 185.0 141.1
Trade names and other intangible assets    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 23.9 23.9
Accumulated Amortization (16.5) (12.6)
Net 7.4 11.3
Non-compete agreements    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross 13.5 11.0
Accumulated Amortization (5.4) (3.7)
Net $ 8.1 $ 7.3