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EQUITY SECURITIES - Additional Information (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Galapagos |  |
Equity Securities [Line Items] |  |
Marketable equity securities | $ 419 | $ 462
Arcus |  |
Equity Securities [Line Items] |  |
Marketable equity securities | $ 247 | $ 448

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