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
 3 Months Ended
Mar. 31, 2024
USD ($)
Goodwill [Roll Forward]  
Balance, Beginning of period $ 6,829.9
Adjustments to initial purchase price allocation 1.7
Foreign currency translation (70.3)
Balance, End of period 6,761.3
Workforce Solutions  
Goodwill [Roll Forward]  
Balance, Beginning of period 2,520.2
Adjustments to initial purchase price allocation 0.0
Foreign currency translation (0.1)
Balance, End of period 2,520.1
U.S. Information Solutions  
Goodwill [Roll Forward]  
Balance, Beginning of period 2,006.2
Adjustments to initial purchase price allocation 0.0
Foreign currency translation 0.0
Balance, End of period 2,006.2
International  
Goodwill [Roll Forward]  
Balance, Beginning of period 2,303.5
Adjustments to initial purchase price allocation 1.7
Foreign currency translation (70.2)
Balance, End of period $ 2,235.0