STATEMENT OF CONSOLIDATED CASH FLOWS (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including noncontrolling interest	$ 475	$ 880
Adjustments to reconcile net income to net cash provided by operating activities:
Unrealized derivative instrument gain, net	(104)	(41)
Gain on divestitures	(9)	(320)
Exploratory dry hole expense and unproved leasehold impairments	73	152
Depreciation, depletion, and amortization	1,161	1,148
Asset retirement obligation accretion	54	73
Impairments	0	8
Deferred income tax benefit	(26)	(647)
Other	107	80
Changes in operating assets and liabilities:
Receivables	(101)	62
Inventories	(9)	20
Drilling advances	30	(20)
Deferred charges and other	69	(90)
Accounts payable	46	(37)
Accrued expenses	(45)	(86)
Deferred credits and noncurrent liabilities	7	24
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,728	1,206
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(1,572)	(883)
Leasehold and property acquisitions	(38)	(67)
Additions to gas gathering, transmission, and processing facilities	(284)	(274)
Proceeds from sale of Midale and House Mountain	0	228
Proceeds from sale of oil and gas properties	13	483
Other, net	(33)	(16)
NET CASH USED IN INVESTING ACTIVITIES	(1,914)	(529)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on fixed-rate debt	(150)	(70)
Distributions to noncontrolling interest	(155)	(170)
Dividends paid	(191)	(190)
Other	(14)	43
NET CASH USED IN FINANCING ACTIVITIES	(510)	(387)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(696)	290
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,668	1,377
CASH AND CASH EQUIVALENTS AT END OF PERIOD	972	1,667
SUPPLEMENTARY CASH FLOW DATA:
Interest paid, net of capitalized interest	200	202
Income taxes paid, net of refunds	$ 374	$ 163