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INCOME TAXES (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Income Tax Examination [Line Items]          
Provision for income taxes $ 37 $ (31) $ 99 $ 25  
Effective Income Tax Rate Reconciliation, Percent 0.00% [1] 0.00% [1] 44.00% 8.00%  
Unrecognized Tax Benefits $ 256   $ 256   $ 257
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount   $ 19   $ 19  
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount   $ 7   $ 7  
Effective Income Tax Rate Reconciliation, Disposition of Business, Amount 21   21    
Minimum [Member]          
Income Tax Examination [Line Items]          
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 65   $ 65    
[1] The calculated effective tax rates are greater than 100 percent or less than zero percent.