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AVAILABLE-FOR-SALE DEBT SECURITIES AND EQUITY SECURITIES - Summary of Available-for-Sale Debt Securities by Contractual Maturity (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Amortized Cost    
Within one year $ 1,233  
After one year through five years 1,161  
After five years through ten years 6  
After ten years 3  
Amortized Cost 2,403 $ 2,325
Fair Value    
Within one year 1,226  
After one year through five years 1,147  
After five years through ten years 6  
After ten years 3  
Estimated Fair Value  $ 2,382 $ 2,293