Consolidated Statements of Cash Flows (unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flows From Operating Activities
Net Income	$ 200	$ 261
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Depreciation, Depletion and Amortization	425	367
Asset Impairments	97	0
Deferred Income Taxes	17	52
Income from Equity Method Investees, Net of Dividends	(13)	(35)
Loss on Commodity Derivative Instruments	75	72
Net Cash Received (Paid) in Settlement of Commodity Derivative Instruments	(33)	7
(Gain) Loss on Divestitures	1	(53)
Stock Based Compensation	23	18
Other Adjustments for Noncash Items Included in Income	20	25
Changes in Operating Assets and Liabilities
(Increase) Decrease in Accounts Receivable	28	(56)
Increase in Accounts Payable	57	82
Increase in Current Income Taxes Payable	47	0
Decrease in Other Current Liabilities	(25)	(48)
Other Operating Assets and Liabilities, Net	10	13
Net Cash Provided by Operating Activities	929	705
Cash Flows From Investing Activities
Additions to Property, Plant and Equipment	(1,158)	(806)
Additions to Equity Method Investments	(12)	(20)
Proceeds from Divestitures	92	76
Other	0	2
Net Cash Used in Investing Activities	(1,078)	(748)
Cash Flows From Financing Activities
Exercise of Stock Options	10	22
Excess Tax Benefits from Stock-Based Awards	6	9
Dividends Paid, Common Stock	(50)	(44)
Purchase of Treasury Stock	(15)	(14)
Proceeds from Credit Facilities	450	0
Repayment of Capital Lease Obligation	(15)	(12)
Net Cash Provided by (Used in) Financing Activities	386	(39)
Increase (Decrease) in Cash and Cash Equivalents	237	(82)
Cash and Cash Equivalents at Beginning of Period	1,117	1,387
Cash and Cash Equivalents at End of Period	$ 1,354	$ 1,305