Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS - Schedule of Changes in Amount of Goodwill (Details)

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GOODWILL AND INTANGIBLE ASSETS - Schedule of Changes in Amount of Goodwill (Details)
$ in Millions
9 Months Ended
Sep. 30, 2023
USD ($)
Goodwill [Roll Forward]  
Balance, Beginning of period $ 6,383.9
Acquisitions 410.4
Adjustments to initial purchase price allocation 1.0
Foreign currency translation (64.5)
Balance, End of period 6,730.8
Workforce Solutions  
Goodwill [Roll Forward]  
Balance, Beginning of period 2,520.8
Acquisitions 0.0
Adjustments to initial purchase price allocation (0.7)
Foreign currency translation 0.0
Balance, End of period 2,520.1
U.S. Information Solutions  
Goodwill [Roll Forward]  
Balance, Beginning of period 2,004.8
Acquisitions 0.0
Adjustments to initial purchase price allocation 1.4
Foreign currency translation 0.0
Balance, End of period 2,006.2
International  
Goodwill [Roll Forward]  
Balance, Beginning of period 1,858.3
Acquisitions 410.4
Adjustments to initial purchase price allocation 0.3
Foreign currency translation (64.5)
Balance, End of period $ 2,204.5