CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOW FROM OPERATING ACTIVITIES
Net Income (loss)	$ 78	$ (218)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Income from discontinued operations	(438)	3
Depreciation, depletion and amortization of assets	1,102	1,029
Deferred income tax provision (benefit)	77	(63)
Other noncash charges to income	63	110
Gain on sale of assets, net	(138)	24
Asset impairments	78	236
Changes in operating assets and liabilities, net	(316)	(555)
Other operating, net	(367)
Operating cash flow from continuing operations	139	566
Operating cash flow from discontinued operations	550	(5)
Net cash provided by operating activities	689	561
CASH FLOW FROM INVESTING ACTIVITIES
Capital expenditures	(646)	(1,675)
Change in capital accrual	(208)	(458)
Proceeds from sale of assets and equity investments, net	285	20
Purchase of assets, net	(24)	(6)
Equity investments and other, net	(44)	(87)
Net cash used by investing activities	(637)	(2,206)
CASH FLOW FROM FINANCING ACTIVITIES
Change in restricted cash	1,193	754
Payment of long-term debt	(700)
Proceeds from issuance of common stock	11	19
Purchases of treasury stock	(7)	(207)
Cash dividends paid	(574)	(557)
Net cash provided (used) by financing activities	(77)	9
Decrease in cash and cash equivalents	(25)	(1,636)
Cash and cash equivalents-beginning of period	3,201	3,789
Cash and cash equivalents-end of period	$ 3,176	$ 2,153