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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Assets and Liabilities Associated with Interest Rate Derivatives (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Assets:          
Other current assets $ 1.3   $ 1.3   $ 1.2
Other long-term assets 94.2   94.2   88.1
Total assets 95.5   95.5   89.3
Amount Reclassified from Other Comprehensive Income (Loss) into Statements of Operations $ 7.4 $ 3.2 15.0 $ 8.8  
Cash Flow Hedging | Designated as Hedging Instrument | Other Current Assets          
Assets:          
Amount Reclassified from Other Comprehensive Income (Loss) into Statements of Operations     0.2    
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Noncurrent Assets          
Assets:          
Amount Reclassified from Other Comprehensive Income (Loss) into Statements of Operations     $ 3.9   $ 3.7