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INVESTMENTS - Amortized Cost (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Investments, Debt and Equity Securities [Abstract] |  |
Amortized Cost | $ 193 | $ 195
Unrealized Gains | 0 | 0
Unrealized Losses | (19) | (25)
Fair Value | $ 174 | $ 170

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