SUPPLEMENTAL OIL AND GAS DISCLOSURES (Unaudited) - Future Net Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Cash inflows	$ 39,021	$ 22,219	$ 37,454
Production costs	(12,378)	(10,336)	(15,219)
Development costs	(5,567)	(4,636)	(5,098)
Income tax expense	(2,789)	(780)	(2,741)
Net cash flows	18,287	6,467	14,396
10 percent discount rate	(5,927)	(1,155)	(4,514)
Discounted future net cash flows	$ 12,360	5,312	9,882
Estimated future net cash flow before income tax expenses	10.00%
Total estimated future net cash flows before income tax expense discounted at 10 percent per annum	$ 15,300	7,100	12,400
United States
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Cash inflows	22,852	12,537	21,694
Production costs	(8,323)	(6,244)	(10,642)
Development costs	(1,632)	(1,555)	(1,740)
Income tax expense	(134)	0	(27)
Net cash flows	12,763	4,738	9,285
10 percent discount rate	(5,294)	(1,829)	(4,003)
Discounted future net cash flows	7,469	2,909	5,282
Egypt
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Cash inflows	9,337	5,560	8,306
Production costs	(1,712)	(1,704)	(1,847)
Development costs	(1,402)	(633)	(707)
Income tax expense	(1,887)	(1,096)	(1,930)
Net cash flows	4,336	2,127	3,822
10 percent discount rate	(983)	(437)	(808)
Discounted future net cash flows	3,353	1,690	3,014
Egypt | Noncontrolling Interests
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Discounted future net cash flows	1,100	563	1,000
North Sea
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Cash inflows	6,832	4,122	7,454
Production costs	(2,343)	(2,388)	(2,730)
Development costs	(2,533)	(2,448)	(2,651)
Income tax expense	(768)	316	(784)
Net cash flows	1,188	(398)	1,289
10 percent discount rate	350	1,111	297
Discounted future net cash flows	$ 1,538	$ 713	$ 1,586