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EMPLOYEE BENEFIT PLANS - Other Benefits (Details) - Phantom Share Units (PSUs) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure      
Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent   $ 8.1  
Share-based Payment Arrangement, Expense $ 0.1 2.6 $ 13.6
Deferred Compensation Cash-based Arrangements, Liability, Current and Noncurrent   $ 8.0  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years