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ASSET RETIREMENT OBLIGATION (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Asset retirement obligation at the beginning of period $ 2,130    
Liabilities settled (7)    
Deconsolidation of Altus (69)    
Accretion expense 29 $ 28  
Asset retirement obligation at the end of period 2,083    
Less current portion (40)   $ (41)
Asset retirement obligation, long-term [1] $ 2,043   $ 2,089
[1] The Altus VIE amounts are disclosed as of December 31, 2021. All Altus balances were deconsolidated as of February 22, 2022. Refer to Note 1—Summary of Significant Accounting Policies and Note 3—Acquisitions and Divestitures for further detail.