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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Asset Impairments Recorded in Connection with Fair Value Assessments (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Schedule Of Significant Accounting Policies [Line Items]            
Equity method interests $ 160     $ 160 $ 0 $ 0
Divested unproved properties and leasehold       0 0 149
Goodwill       0 87 0
Inventory and other       48 27 21
Impairments   $ 1,400   208 4,501 2,949
Oil and gas proved property            
Schedule Of Significant Accounting Policies [Line Items]            
Tangible asset impairment charges     $ 20 0 4,319 1,484
Gathering, processing, and transmission facilities            
Schedule Of Significant Accounting Policies [Line Items]            
Tangible asset impairment charges       $ 0 $ 68 $ 1,295