SUPPLEMENTAL OIL AND GAS DISCLOSURES (Unaudited) - Oil and Gas Reserve Information (Details) MBoe in Thousands	12 Months Ended
	Dec. 31, 2021 MBoe MMcf MBbls	Dec. 31, 2020 MBoe MBbls MMcf	Dec. 31, 2019 MBoe MBbls MMcf	Dec. 31, 2018 MBoe MBbls MMcf
Reserve Quantities [Line Items]
Proved developed reserves	827,772	797,843	892,816	1,081,316
Proved undeveloped reserves	85,190	75,840	117,972	153,081
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	873,683	1,010,788	1,234,397
Extensions, discoveries and other additions	101,619	78,303	176,366
Purchases of minerals in-place	457
Revisions of previous estimates	107,038	(44,910)	(119,473)
Production	(141,642)	(160,945)	(172,948)
Sales of minerals in-place	(28,193)	(9,553)	(107,554)
Ending balance	912,962	873,683	1,010,788
United States
Reserve Quantities [Line Items]
Proved developed reserves	551,384	532,994	594,595	769,125
Proved undeveloped reserves	65,288	53,408	89,458	123,493
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	586,402	684,053	892,618
Extensions, discoveries and other additions	76,871	39,454	135,174
Purchases of minerals in-place	457
Revisions of previous estimates	64,847	(33,854)	(133,974)
Production	(83,712)	(93,698)	(102,211)
Sales of minerals in-place	(28,193)	(9,553)	(107,554)
Ending balance	616,672	586,402	684,053
Egypt
Reserve Quantities [Line Items]
Proved developed reserves	184,563	164,870	176,470	189,871
Proved undeveloped reserves	12,683	13,449	15,038	15,045
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	178,319	191,508	204,916
Extensions, discoveries and other additions	21,765	31,905	26,859
Purchases of minerals in-place	0
Revisions of previous estimates	39,071	(502)	8,355
Production	(41,909)	(44,592)	(48,622)
Sales of minerals in-place	0	0	0
Ending balance	197,246	178,319	191,508
North Sea
Reserve Quantities [Line Items]
Proved developed reserves	91,825	99,979	121,751	122,320
Proved undeveloped reserves	7,219	8,983	13,476	14,543
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	108,962	135,227	136,863
Extensions, discoveries and other additions	2,983	6,944	14,333
Purchases of minerals in-place	0
Revisions of previous estimates	3,120	(10,554)	6,146
Production	(16,021)	(22,655)	(22,115)
Sales of minerals in-place	0	0	0
Ending balance	99,044	108,962	135,227
Noncontrolling Interests | Egypt
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved developed reserves (Energy) | MBoe	66	59	64	68
Crude Oil and Condensate
Reserve Quantities [Line Items]
Proved developed reserves	364,687	389,483	483,430	514,989
Proved undeveloped reserves	34,928	44,017	67,596	65,944
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	433,500	551,026	580,933
Extensions, discoveries and other additions	33,547	40,988	82,353
Purchases of minerals in-place	126
Revisions of previous estimates	18,188	(71,462)	(6,562)
Production	(66,364)	(78,331)	(87,386)
Sales of minerals in-place	(19,382)	(8,721)	(18,312)
Ending balance	399,615	433,500	551,026
Crude Oil and Condensate | United States
Reserve Quantities [Line Items]
Proved developed reserves	180,968	206,936	278,145	300,484
Proved undeveloped reserves	18,168	25,516	46,716	45,182
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	232,452	324,861	345,666
Extensions, discoveries and other additions	17,869	17,858	52,297
Purchases of minerals in-place	126
Revisions of previous estimates	(4,479)	(69,247)	(16,446)
Production	(27,450)	(32,299)	(38,344)
Sales of minerals in-place	(19,382)	(8,721)	(18,312)
Ending balance	199,136	232,452	324,861
Crude Oil and Condensate | Egypt
Reserve Quantities [Line Items]
Proved developed reserves	106,646	95,981	103,573	110,014
Proved undeveloped reserves	11,003	11,228	10,831	9,484
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	107,209	114,404	119,498
Extensions, discoveries and other additions	13,390	17,855	21,039
Purchases of minerals in-place	0
Revisions of previous estimates	22,727	2,541	4,752
Production	(25,677)	(27,591)	(30,885)
Sales of minerals in-place	0	0	0
Ending balance	117,649	107,209	114,404
Crude Oil and Condensate | North Sea
Reserve Quantities [Line Items]
Proved developed reserves	77,073	86,566	101,712	104,491
Proved undeveloped reserves	5,757	7,273	10,049	11,278
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	93,839	111,761	115,769
Extensions, discoveries and other additions	2,288	5,275	9,017
Purchases of minerals in-place	0
Revisions of previous estimates	(60)	(4,756)	5,132
Production	(13,237)	(18,441)	(18,157)
Sales of minerals in-place	0	0	0
Ending balance	82,830	93,839	111,761
Crude Oil and Condensate | Noncontrolling Interests | Egypt
Reserve Quantities [Line Items]
Proved developed reserves	39,000	36,000	38,000	40,000
Natural Gas Liquids
Reserve Quantities [Line Items]
Proved developed reserves	166,677	153,368	161,778	200,014
Proved undeveloped reserves	16,685	15,587	24,319	34,487
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	168,955	186,097	234,501
Extensions, discoveries and other additions	21,143	11,844	42,067
Purchases of minerals in-place	191
Revisions of previous estimates	22,862	(412)	(31,716)
Production	(24,806)	(28,118)	(25,933)
Sales of minerals in-place	(4,983)	(456)	(32,822)
Ending balance	183,362	168,955	186,097
Natural Gas Liquids | United States
Reserve Quantities [Line Items]
Proved developed reserves	164,172	150,599	158,794	197,574
Proved undeveloped reserves	16,380	15,141	23,569	33,796
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	165,740	182,363	231,370
Extensions, discoveries and other additions	21,055	11,435	41,343
Purchases of minerals in-place	191
Revisions of previous estimates	22,724	(469)	(32,569)
Production	(24,175)	(27,133)	(24,959)
Sales of minerals in-place	(4,983)	(456)	(32,822)
Ending balance	180,552	165,740	182,363
Natural Gas Liquids | Egypt
Reserve Quantities [Line Items]
Proved developed reserves	446	716	667	502
Proved undeveloped reserves	30	126	90	60
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	842	757	562
Extensions, discoveries and other additions	7	97	27
Purchases of minerals in-place	0
Revisions of previous estimates	(180)	264	508
Production	(193)	(276)	(340)
Sales of minerals in-place	0	0	0
Ending balance	476	842	757
Natural Gas Liquids | North Sea
Reserve Quantities [Line Items]
Proved developed reserves	2,059	2,053	2,317	1,938
Proved undeveloped reserves	275	320	660	631
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance	2,373	2,977	2,569
Extensions, discoveries and other additions	81	312	697
Purchases of minerals in-place	0
Revisions of previous estimates	318	(207)	345
Production	(438)	(709)	(634)
Sales of minerals in-place	0	0	0
Ending balance	2,334	2,373	2,977
Natural Gas Liquids | Noncontrolling Interests | Egypt
Reserve Quantities [Line Items]
Proved developed reserves	159	281	252	187
Natural Gas
Reserve Quantities [Line Items]
Proved developed reserves | MMcf	1,778,442	1,529,950	1,485,649	2,197,882
Proved undeveloped reserves | MMcf	201,464	97,417	156,348	315,900
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance | MMcf	1,627,367	1,641,997	2,513,782
Extensions, discoveries and other additions | MMcf	281,577	152,823	311,674
Purchases of minerals in-place | MMcf	839
Revisions of previous estimates | MMcf	395,924	161,776	(487,168)
Production | MMcf	(302,833)	(326,974)	(357,771)
Sales of minerals in-place | MMcf	(22,968)	(2,255)	(338,520)
Ending balance | MMcf	1,979,906	1,627,367	1,641,997
Natural Gas | United States
Reserve Quantities [Line Items]
Proved developed reserves | MMcf	1,237,461	1,052,756	945,938	1,626,403
Proved undeveloped reserves | MMcf	184,441	76,504	115,040	267,090
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance | MMcf	1,129,260	1,060,978	1,893,493
Extensions, discoveries and other additions | MMcf	227,684	60,965	249,205
Purchases of minerals in-place | MMcf	839
Revisions of previous estimates | MMcf	279,610	215,166	(509,753)
Production | MMcf	(192,523)	(205,594)	(233,447)
Sales of minerals in-place | MMcf	(22,968)	(2,255)	(338,520)
Ending balance | MMcf	1,421,902	1,129,260	1,060,978
Natural Gas | Egypt
Reserve Quantities [Line Items]
Proved developed reserves | MMcf	464,826	409,035	433,382	476,132
Proved undeveloped reserves | MMcf	9,899	12,572	24,704	33,006
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance | MMcf	421,607	458,086	509,138
Extensions, discoveries and other additions | MMcf	50,209	83,718	34,758
Purchases of minerals in-place	0
Revisions of previous estimates	99,143	(19,849)	18,570
Production	(96,234)	(100,348)	(104,380)
Sales of minerals in-place	0	0	0
Ending balance | MMcf	474,725	421,607	458,086
Natural Gas | North Sea
Reserve Quantities [Line Items]
Proved developed reserves | MMcf	76,155	68,159	106,329	95,347
Proved undeveloped reserves | MMcf	7,124	8,341	16,604	15,804
Proved Developed and Undeveloped Reserves [Roll Forward]
Beginning balance | MMcf	76,500	122,933	111,151
Extensions, discoveries and other additions | MMcf	3,684	8,140	27,711
Purchases of minerals in-place	0
Revisions of previous estimates	17,171	(33,541)	4,015
Production	(14,076)	(21,032)	(19,944)
Sales of minerals in-place	0	0	0
Ending balance | MMcf	83,279	76,500	122,933
Natural Gas | Noncontrolling Interests | Egypt
Reserve Quantities [Line Items]
Proved developed reserves | MMcf	158,000	141,000	153,000	170,000