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FAIR VALUE MEASUREMENTS - Activity for Investments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Fair Value Disclosures [Abstract]      
Proceeds from Investment Sales $ 26.8 $ 7.6 $ 30.2
Purchases of Investments 20.1 18.5 18.8
Gross Realized Gains on Investment Sales 6.3 1.1 6.1
Gross Realized Losses on Investment Sales $ 0.8 $ 0.3 $ 1.3