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