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FAIR VALUE MEASUREMENTS - Schedule of Changes in Fair Value of Contingent Consideration Obligation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Change in fair value of contingent consideration liabilities (Note 12) Change in fair value of contingent consideration liabilities (Note 12)
Level 3 | Fair Value on a Recurring Basis    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value beginning balance $ 40.2 $ 76.0
Changes in fair value (29.9) (35.8)
Fair value ending balance 10.3 40.2
Contingent Consideration | Level 3 | Fair Value on a Recurring Basis    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value beginning balance 26.2 62.0
Changes in fair value (26.2) (35.8)
Fair value ending balance 0.0 26.2
Other | Level 3 | Fair Value on a Recurring Basis    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value beginning balance 14.0 14.0
Changes in fair value (3.7) 0.0
Fair value ending balance $ 10.3 $ 14.0