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INCOME TAXES (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Income Taxes [Line Items]      
Effective tax rate 22.00% 1.00%  
Decrease in valuation allowance     $ 512
Deferred income tax expense (benefit), tax provision recorded, before offset of release of valuation allowance   $ 451  
Tax benefit attributable to release of valuation allowance   $ 439  
Valuation allowance related to operating loss $ 52    
Federal      
Income Taxes [Line Items]      
Operating loss carryforwards subject to a section 382 limitation 2,000    
Operating loss carryforwards 4,000    
Deferred tax assets, operating loss carryforwards, subject to expiration 3,000    
Deferred tax assets, operating loss carryforwards, not subject to expiration 1,000    
Indigo Natural Resources, LLC      
Income Taxes [Line Items]      
Operating loss carryforwards subject to a section 382 limitation $ 48