CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
CASH FLOW FROM OPERATING ACTIVITIES
Net income	$ 2,677	$ 2,887
Adjustments to reconcile net income to net cash provided by operating activities:
Discontinued operations, net	9	5
Depreciation, depletion and amortization of assets	2,562	2,172
Deferred income tax provision	635	794
Other noncash charges to income	218	109
Gain on sale of equity investment	(131)
Undistributed earnings from equity investments	(31)	(8)
Dry hole expenses	77	166
Changes in operating assets and liabilities, net	227	(150)
Operating cash flow from continuing operations	6,243	5,975
Operating cash flow from discontinued operations, net of taxes	(18)	(17)
Net cash provided by operating activities	6,225	5,958
CASH FLOW FROM INVESTING ACTIVITIES
Capital expenditures	(4,280)	(5,125)
Payments for purchases of assets and businesses	(226)	(1,081)
Sale of equity investment, net	270
Other, net	(63)	44
Net cash used by investing activities	(4,299)	(6,162)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from long-term debt		1,736
Proceeds from issuance of common stock	24	58
Purchases of treasury stock	(28)	(152)
Contributions from noncontrolling interest	65
Cash dividends paid	(517)	(813)
Other, net	7	4
Net cash (used) provided by financing activities	(449)	833
Increase in cash and cash equivalents	1,477	629
Cash and cash equivalents-beginning of period	1,592	3,781
Cash and cash equivalents-end of period	$ 3,069	$ 4,410