Consolidated Statements Of Cash Flows (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net earnings	$ 3,159	$ 1,898
Earnings from discontinued operations, net of tax	(2,586)	(472)
Adjustments to reconcile earnings from continuing operations to net cash provided by operating activities:
Depreciation, depletion and amortization	1,056	978
Deferred income tax expense (benefit)	1,438	(231)
Unrealized change in fair value of financial instruments	(74)	(231)
Other noncash charges	82	81
Net (increase) decrease in working capital	(89)	581
Decrease in long-term other assets	45	14
(Decrease) increase in long-term other liabilities	(201)	1
Cash from operating activities - continuing operations	2,830	2,619
Cash from operating activities - discontinued operations	(20)	273
Net cash from operating activities	2,810	2,892
Cash flows from investing activities:
Capital expenditures	(3,720)	(3,221)
Proceeds from property and equipment divestitures	5	4,129
Purchases of short-term investments	(4,520)
Redemptions of short-term investments	1,298
Redemptions of long-term investments	1	18
Other	(33)
Cash from investing activities - continuing operations	(6,969)	926
Cash from investing activities - discontinued operations	3,170	429
Net cash from investing activities	(3,799)	1,355
Cash flows from financing activities:
Net commercial paper borrowings (repayments)	2,340	(1,432)
Debt repayments		(350)
Proceeds from stock option exercises	96	15
Repurchases of common stock	(1,290)	(430)
Dividends paid on common stock	(140)	(142)
Excess tax benefits related to share-based compensation	12	6
Net cash from financing activities	1,018	(2,333)
Effect of exchange rate changes on cash	32	(9)
Net increase in cash and cash equivalents	61	1,905
Cash and cash equivalents at beginning of period (including cash related to assets held for sale)	3,290	1,011
Cash and cash equivalents at end of period (including cash related to assets held for sale)	$ 3,351	$ 2,916