Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net earnings (loss)	$ 4,704	$ 4,550	$ (2,479)
Earnings from discontinued operations, net of tax	(2,570)	(2,217)	(274)
Adjustments to reconcile earnings (loss) from continuing operations to net cash provided by operating activities:
Depreciation, depletion and amortization	2,248	1,930	2,108
Deferred income tax expense (benefit)	2,299	719	(2,014)
Unrealized change in fair value of financial instruments	(401)	107	55
Reduction of carrying value of oil and gas properties			6,408
Other noncash charges	241	215	288
Net decrease (increase) in working capital	185	(273)	149
Decrease (increase) in long-term other assets	33	32	(6)
Decrease in long-term other liabilities	(493)	(41)	(3)
Cash from operating activities - continuing operations	6,246	5,022	4,232
Cash from operating activities - discontinued operations	(22)	456	505
Net cash from operating activities	6,224	5,478	4,737
Cash flows from investing activities:
Capital expenditures	(7,534)	(6,476)	(4,879)
Proceeds from property and equipment divestitures	129	4,310	34
Purchases of short-term investments	(6,691)	(145)
Redemptions of short-term investments	5,333
Redemptions of long-term investments	10	21	7
Other	(39)	(19)	(17)
Cash from investing activities - continuing operations	(8,792)	(2,309)	(4,855)
Cash from investing activities - discontinued operations	3,146	2,197	(499)
Net cash from investing activities	(5,646)	(112)	(5,354)
Cash flows from financing activities:
Net commercial paper borrowings (repayments)	3,726	(1,432)	426
Proceeds from borrowings of long-term debt, net of issuance costs	2,221		1,187
Debt repayments	(1,760)	(350)	(178)
Proceeds from stock option exercises	101	111	42
Repurchases of common stock	(2,332)	(1,168)
Dividends paid on common stock	(278)	(281)	(284)
Excess tax benefits related to share-based compensation	13	16	8
Net cash from financing activities	1,691	(3,104)	1,201
Effect of exchange rate changes on cash	(4)	17	43
Net increase in cash and cash equivalents	2,265	2,279	627
Cash and cash equivalents at beginning of period (including cash related to assets previously held for sale in 2010 and 2009)	3,290	1,011	384
Cash and cash equivalents at end of period (including cash related to assets previously held for sale in 2010 and 2009)	$ 5,555	$ 3,290	$ 1,011

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).