STATEMENT OF CONSOLIDATED CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including noncontrolling interest	$ 206	$ 267
Adjustments to reconcile net income to net cash provided by operating activities:
Unrealized derivative instrument losses, net	(49)	0
Gain on divestitures	(7)	(341)
Exploratory dry hole expense and unproved leasehold impairments	36	67
Depreciation, depletion, and amortization	553	576
Asset retirement obligation accretion	27	36
Impairments	0	8
Deferred income tax provision (benefit)	(16)	83
Other	49	34
Changes in operating assets and liabilities:
Receivables	(65)	(41)
Inventories	(33)	12
Drilling advances	(41)	(12)
Deferred charges and other	32	(10)
Accounts payable	66	(56)
Accrued expenses	(149)	(175)
Deferred credits and noncurrent liabilities	6	7
NET CASH PROVIDED BY OPERATING ACTIVITIES	615	455
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(737)	(322)
Leasehold and property acquisitions	(12)	(49)
Additions to gas gathering, transmission, and processing facilities	(128)	(142)
Proceeds from sale of other oil and gas properties	9	426
Other, net	(22)	(6)
NET CASH USED IN INVESTING ACTIVITIES	(890)	(93)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on fixed-rate debt	(150)	(70)
Distributions to noncontrolling interest	(69)	(57)
Dividends paid	(95)	(95)
Other	(2)	4
NET CASH USED IN FINANCING ACTIVITIES	(316)	(218)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(591)	144
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,668	1,377
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,077	1,521
SUPPLEMENTARY CASH FLOW DATA:
Interest paid, net of capitalized interest	140	140
Income taxes paid, net of refunds	$ 191	$ 65