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LONG-TERM OBLIGATIONS - Letters of credit outstanding (Details) - Continuing Operations - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Letters of credit outstanding $ 119.9 $ 118.4
Credit Agreement    
Debt Instrument [Line Items]    
Letters of credit outstanding 0.0 0.0
Additional Credit Agreement    
Debt Instrument [Line Items]    
Letters of credit outstanding 71.8 70.4
Bilateral Arrangements    
Debt Instrument [Line Items]    
Letters of credit outstanding $ 48.1 $ 48.0