Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 2,135	$ 2,645	$ 2,844
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation, depletion, and amortization	1,900	1,628	1,359
Loss contingency for Macondo well incident	1,000	300	0
Provision (benefit) for deferred income taxes, continuing operations	(132)	165	(30)
(Income) loss from discontinued operations, net	(19)	(58)	166
Other changes:
Receivables	(449)	(682)	(1,218)
Accounts payable	327	200	649
Loss Contingency Accrual, Carrying Value, Payments	(219)	0	0
Increase (Decrease) in Inventories	107	611	564
Other	11	67	478
Total cash flows from operating activities	4,447	3,654	3,684
Cash flows from investing activities:
Capital expenditures	(2,934)	(3,566)	(2,953)
Proceeds from Sale and Maturity of Marketable Securities	356	258	1,001
Purchases of investment securities	(329)	(506)	(501)
Sales of property, plant, and equipment	241	395	160
Acquisitions of business assets, net of cash acquired	(94)	(214)	(880)
Other investing activities	(110)	(55)	(17)
Total cash flows from investing activities	(2,870)	(3,688)	(3,190)
Cash flows from financing activities:
Proceeds from exercises of stock options	(4,356)	0	0
Proceeds from Issuance of Long-term Debt	2,968	0	978
Payments of Ordinary Dividends, Common Stock	465	333	330
Proceeds from Stock Options Exercised	277	107	160
Other financing activities	(178)	54	25
Total cash flows from financing activities	(1,754)	(172)	833
Effect of exchange rate changes on cash	49	(8)	(27)
Increase (decrease) in cash and equivalents	(128)	(214)	1,300
Cash and equivalents at beginning of year	2,484	2,698	1,398
Cash and equivalents at end of year	2,356	2,484	2,698
Cash payments during the period for:
Interest	293	294	261
Income taxes	$ 913	$ 1,098	$ 1,285