STATEMENT OF CONSOLIDATED OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
REVENUES AND OTHER:
Oil and gas production revenues	$ 6,315	$ 7,348	$ 5,887
Gain on divestitures	43	23	627
Other	53	53	(91)
Revenues	6,411	7,424	6,423
OPERATING EXPENSES:
Lease operating expenses	1,447	1,439	1,384
Gathering, processing, and transmission	306	348	195
Taxes other than income	207	215	151
Exploration	805	503	549
General and administrative	406	431	395
Transaction, reorganization, and separation	50	28	16
Depreciation, depletion, and amortization	2,680	2,405	2,280
Asset retirement obligation accretion	107	108	130
Impairments	2,949	511	8
Financing costs, net	462	478	397
Total operating expenses	9,419	6,466	5,505
NET INCOME (LOSS) BEFORE INCOME TAXES	(3,008)	958	918
Current income tax provision	660	894	595
Deferred income tax provision (benefit)	14	(222)	(1,180)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS	(3,682)	286	1,503
Net income attributable to noncontrolling interest		1	199
Net loss attributable to common stock	$ (3,553)	$ 40	$ 1,304
NET INCOME (LOSS) PER COMMON SHARE:
Basic (in shares)	$ (9.43)	$ 0.11	$ 3.42
Diluted (in shares)	$ (9.43)	$ 0.11	$ 3.41
WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic (in shares)	377	382	381
Diluted (in shares)	377	384	383
Oil
REVENUES AND OTHER:
Oil and gas production revenues	$ 5,230	$ 5,846	$ 4,598
Natural Gas
REVENUES AND OTHER:
Oil and gas production revenues	678	919	959
Natural Gas Liquids
REVENUES AND OTHER:
Oil and gas production revenues	407	583	330
Noncontrolling Interest, Egypt
OPERATING EXPENSES:
Net income attributable to noncontrolling interest	167	245	199
Noncontrolling Interest, Altus
OPERATING EXPENSES:
Net income attributable to noncontrolling interest	(334)	1	0
Redeemable Noncontrolling Interest - Altus Preferred Unit Limited Partners
OPERATING EXPENSES:
Net income attributable to noncontrolling interest	$ (38)	$ 0	$ 0