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FAIR VALUE MEASUREMENTS - Activity for Investments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Fair Value Disclosures [Abstract]      
Proceeds from Investment Sales $ 26 $ 27 $ 7
Purchases of Investments 22 21 19
Gross Realized Gains on Investment Sales 4 6 1
Gross Realized Losses on Investment Sales $ 1 $ 1 $ 0