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, 2022
USD ($)
Goodwill [Roll Forward]  
Balance, Beginning of period $ 6,258.1
Acquisitions 71.9
Adjustments to initial purchase price allocation 0.2
Foreign currency translation 47.9
Balance, End of period 6,378.1
Workforce Solutions  
Goodwill [Roll Forward]  
Balance, Beginning of period 2,365.4
Acquisitions 44.9
Adjustments to initial purchase price allocation 0.3
Foreign currency translation 0.0
Balance, End of period 2,410.6
U.S. Information Solutions  
Goodwill [Roll Forward]  
Balance, Beginning of period 1,900.1
Acquisitions 0.0
Adjustments to initial purchase price allocation 0.0
Foreign currency translation 0.0
Balance, End of period 1,900.1
International  
Goodwill [Roll Forward]  
Balance, Beginning of period 1,992.6
Acquisitions 27.0
Adjustments to initial purchase price allocation (0.1)
Foreign currency translation 47.9
Balance, End of period $ 2,067.4