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FAIR VALUE MEASUREMENTS - Activity for Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Fair Value Disclosures [Abstract]    
Proceeds from Investment Sales $ 10.0 $ 3.0
Purchases of Investments 1.5 1.5
Gross Realized Gains on Investment Sales 4.0 0.3
Gross Realized Losses on Investment Sales $ 0.2 $ 0.2