SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Non-Cash Impairments of Proved and Unproved Property and Equipment (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Significant Accounting Policies [Line Items]
Impairments		$ 0	$ 208	$ 4,501
Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments		0	0	4,319
Oil and Gas Properties, Unproved
Schedule Of Significant Accounting Policies [Line Items]
Impairments		24	31	101
U.S. | Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments	$ 3,900	0	0	3,938
U.S. | Oil and Gas Properties, Unproved
Schedule Of Significant Accounting Policies [Line Items]
Impairments		20	22	92
Egypt | Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments	354	0	0	374
Egypt | Oil and Gas Properties, Unproved
Schedule Of Significant Accounting Policies [Line Items]
Impairments		4	8	8
North Sea | Oil and gas proved property
Schedule Of Significant Accounting Policies [Line Items]
Impairments	$ 7	0	0	7
North Sea | Oil and Gas Properties, Unproved
Schedule Of Significant Accounting Policies [Line Items]
Impairments		$ 0	$ 1	$ 1