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DEBT AND EQUITY SECURITIES - Schedule of Convertible Debt Security (Details) - Convertible Debt Securities - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |  |
Amortized cost | $ 30 | $ 30 | $ 30
Allowance for credit losses | (30) | (30) | 0
Gross unrealized gains |  | 12 | 12
Gross unrealized losses |  | (12) | 0
Fair value | 0 | 0 | $ 42
Allowance for credit loss, expense | $ 25 | $ 30 |

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