CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOW FROM OPERATING ACTIVITIES
Net income	$ 1,556	$ 624
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization of assets	1,868	1,931
Deferred income tax (benefit) provision	171	(24)
Other noncash charges to income	96	167
Gain on sale of assets, net	(43)	(512)
Asset impairments and related items	42	13
Net distributions from equity investments	(20)	(127)
Dry hole expenses	15	7
Changes in operating assets and liabilities, net	(920)	(454)
Other operating, net		729
Net cash provided by operating activities	2,765	2,354
CASH FLOW FROM INVESTING ACTIVITIES
Capital expenditures	(2,319)	(1,492)
Change in capital accrual	(6)	(35)
Payments for purchases of assets and businesses	(242)	(377)
Sale of assets, net	330	609
Other investing, net	(49)	84
Net cash used by investing activities	(2,286)	(1,211)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from long-term debt, net	978
Payments of long-term debt	(500)
Proceeds from issuance of common stock	13	16
Purchases of treasury stock	(97)	(6)
Cash dividends paid	(1,185)	(1,168)
Other financing, net	2
Net cash used by financing activities	(789)	(1,158)
Decrease in cash and cash equivalents	(310)	(15)
Cash and cash equivalents - beginning of period	1,672	2,233
Cash and cash equivalents - end of period	$ 1,362	$ 2,218