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INVESTMENTS - Equity Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Equity Securities, FV-NI [Line Items]    
Fair Value $ 1,087 $ 1,091
Yen-denominated    
Equity Securities, FV-NI [Line Items]    
Fair Value 679 670
Dollar-denominated    
Equity Securities, FV-NI [Line Items]    
Fair Value 360 374
Other currencies    
Equity Securities, FV-NI [Line Items]    
Fair Value $ 48 $ 47