STATEMENT OF CONSOLIDATED CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	$ 286	$ 1,503	$ (1,273)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss from discontinued operations	0	0	33
Unrealized derivative instrument losses (gains), net	(103)	59	0
Gain on divestitures	(23)	(627)	(21)
Exploratory dry hole expense and unproved leasehold impairments	351	429	353
Depreciation, depletion, and amortization	2,405	2,280	2,618
Asset retirement obligation accretion	108	130	156
Impairments	511	8	1,103
Benefit from deferred income taxes	(222)	(1,180)	(833)
Loss from extinguishment of debt	94	1	1
Other	125	145	163
Changes in operating assets and liabilities:
Receivables	150	(270)	126
Inventories	(6)	32	(27)
Drilling advances	(11)	(128)	91
Deferred charges and other	83	(58)	115
Accounts payable	77	63	(63)
Accrued expenses	5	4	(9)
Deferred credits and noncurrent liabilities	(53)	37	(80)
NET CASH PROVIDED BY CONTINUING OPERATING ACTIVITIES	3,777	2,428	2,453
NET CASH USED IN DISCONTINUED OPERATIONS	0	0	(23)
NET CASH PROVIDED BY OPERATING ACTIVITIES	3,777	2,428	2,430
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(3,190)	(2,052)	(1,610)
Additions to gas gathering, transmission, and processing facilities	(581)	(530)	(158)
Leasehold and property acquisitions	(133)	(178)	(181)
Joint venture equity interest	(91)	0	0
Proceeds from sale of Canadian assets, net of cash divested	0	661	0
Proceeds from sale of oil and gas properties, other	138	758	134
Other, net	(87)	(75)	155
NET CASH USED IN INVESTING ACTIVITIES	(3,944)	(1,416)	(1,660)
CASH FLOWS FROM FINANCING ACTIVITIES:
Fixed rate debt borrowings	992	0	0
Payments on fixed-rate debt	(1,370)	(70)	(181)
Proceeds from Altus transaction	628	0	0
Distributions to noncontrolling interest - Egypt	(345)	(265)	(293)
Dividends paid	(382)	(380)	(379)
Treasury stock activity, net	(305)	0	0
Other	(5)	(6)	(7)
NET CASH USED IN FINANCING ACTIVITIES	(787)	(721)	(860)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(954)	291	(90)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,668	1,377	1,467
CASH AND CASH EQUIVALENTS AT END OF PERIOD	714	1,668	1,377
SUPPLEMENTARY CASH FLOW DATA:
Interest paid, net of capitalized interest	402	405	413
Income taxes paid, net of refunds	$ 867	$ 516	$ 305