STATEMENT OF CONSOLIDATED CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	$ 1,503,000	$ (1,273,000)	$ (10,667,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss (income) from discontinued operations	0	33,000	(492,000)
Unrealized derivative instrument losses, net	59,000	0	0
Gain on divestitures	(627,000)	(21,000)	(281,000)
Exploratory dry hole expense and unproved leasehold impairments	429,000	353,000	2,595,000
Depreciation, depletion, and amortization	2,280,000	2,618,000	3,300,000
Asset retirement obligation accretion	130,000	156,000	145,000
Impairments	8,000	1,103,000	9,472,000
Benefit from deferred income taxes	(1,180,000)	(833,000)	(1,445,000)
Other	146,000	164,000	7,000
Changes in operating assets and liabilities:
Receivables	(270,000)	126,000	663,000
Inventories	32,000	(27,000)	21,000
Drilling advances	(128,000)	91,000	138,000
Deferred charges and other	(58,000)	115,000	(345,000)
Accounts payable	63,000	(63,000)	(489,000)
Accrued expenses	4,000	(9,000)	(156,000)
Deferred credits and noncurrent liabilities	37,000	(80,000)	88,000
NET CASH PROVIDED BY CONTINUING OPERATING ACTIVITIES	2,428,000	2,453,000	2,554,000
NET CASH PROVIDED BY (USED IN) DISCONTINUED OPERATIONS	0	(23,000)	113,000
NET CASH PROVIDED BY OPERATING ACTIVITIES	2,428,000	2,430,000	2,667,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(2,052,000)	(1,610,000)	(4,208,000)
Additions to gas gathering, transmission, and processing facilities	(530,000)	(158,000)	(233,000)
Leasehold and property acquisitions	(178,000)	(181,000)	(367,000)
Proceeds from sale of Kitimat LNG	0	0	854,000
Proceeds from sale of Yara Pilbara	0	0	391,000
Proceeds from sale of Canadian assets, net of cash divested	661,000	0	0
Proceeds from sale of oil and gas properties, other	758,000	134,000	268,000
Other, net	(75,000)	155,000	6,000
NET CASH USED IN CONTINUING INVESTING ACTIVITIES	(1,416,000)	(1,660,000)	(3,289,000)
NET CASH PROVIDED BY DISCONTINUED OPERATIONS	0	0	4,372,000
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(1,416,000)	(1,660,000)	1,083,000
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper, credit facilities and bank notes, net	0	0	(1,570,000)
Payments on fixed-rate debt	(70,000)	(181,000)	(939,000)
Distributions to noncontrolling interest	(265,000)	(293,000)	(129,000)
Dividends paid	(380,000)	(379,000)	(377,000)
Other	(6,000)	(7,000)	53,000
NET CASH USED IN FINANCING ACTIVITIES	(721,000)	(860,000)	(2,962,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	291,000	(90,000)	788,000
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,377,000	1,467,000	679,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,668,000	1,377,000	1,467,000
SUPPLEMENTARY CASH FLOW DATA:
Interest paid, net of capitalized interest	405,000	413,000	461,000
Income taxes paid, net of refunds	$ 516,000	$ 305,000	$ 573,000