Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating activities:
Net income (loss)	$ (662)	$ 1,689
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Discontinued operations	0	(931)
Deferred income taxes	(185)	173
Depreciation, depletion and amortization	1,572	1,323
Impairments	44	21
Pension and other postretirement benefits, net	14	26
Exploratory dry well costs and unproved property impairments	148	156
Net (gain) loss on disposal of assets	(1)	85
Equity method investments, net	37	(10)
Changes in:
Current receivables, changes in	534	(266)
Inventories, changes in	21	(58)
Current accounts payable and accrued liabilities, changes in	(770)	(31)
All other operating, net	(35)	(59)
Net cash provided by continuing operations	717	2,118
Net cash provided by discontinued operations	0	440
Net cash provided by operating activities	717	2,558
Investing activities:
Additions to property, plant and equipment	(2,320)	(2,230)
Disposal of assets	2	2,232
Investments - return of capital	31	27
Purchases of short-term investments	(925)	0
Investing activities of discontinued operations	0	(233)
All other investing, net	(1)	0
Net cash used in investing activities	(3,213)	(204)
Financing activities:
Commercial paper, net	0	(135)
Borrowings	1,996	0
Debt issuance costs	(19)	0
Debt repayments	(34)	(34)
Purchases of common stock	0	(1,000)
Dividends paid	(285)	(260)
All other financing, net	11	86
Net cash used in financing activities	1,669	(1,343)
Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations	1	0
Effect of Exchange Rate on Cash and Cash Equivalents, Discontinued Operations	0	(10)
Cash held for sale	0	96
Cash and Cash Equivalents, Period Increase (Decrease)	(826)	905
Cash and cash equivalents at beginning of period	2,398	264
Cash and cash equivalents at end of period	$ 1,572	$ 1,169