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FAIR VALUE MEASUREMENTS - Narrative (Details) - Senior Notes - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Senior Notes Due 2026    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of notes $ 699.5 $ 694.1
Senior Notes Due 2028    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of notes $ 511.3 $ 510.9