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INCOME TAXES - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]        
Balance at beginning of year $ 93 $ 89 $ 116 $ 93
Additions based on tax positions related to prior year 4 0 16  
Additions based on tax positions related to the current year 0 0 7  
Reductions for tax positions of prior years 0 (27) 0  
Balance at end of year $ 93 $ 89 $ 116 $ 93