Consolidated Balance Sheets (unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current Assets
Cash and Cash Equivalents	$ 1,709	$ 1,183
Accounts Receivable, Net	769	857
Commodity Derivative Assets, Current	661	710
Other Current Assets	259	325
Total Current Assets	3,398	3,075
Property, Plant and Equipment
Oil and Gas Properties (Successful Efforts Method of Accounting)	26,337	25,599
Property, Plant and Equipment, Other	684	630
Total Property, Plant and Equipment, Gross	27,021	26,229
Accumulated Depreciation, Depletion and Amortization	(8,559)	(8,086)
Total Property, Plant and Equipment, Net	18,462	18,143
Goodwill	617	620
Other Noncurrent Assets	784	715
Total Assets	23,261	22,553
Current Liabilities
Accounts Payable - Trade	1,269	1,578
Other Current Liabilities	874	944
Total Current Liabilities	2,143	2,522
Long-Term Debt	6,113	6,103
Deferred Income Taxes, Noncurrent	2,491	2,516
Other Noncurrent Liabilities	1,157	1,087
Total Liabilities	11,904	12,228
Commitments and Contingencies
Shareholders’ Equity
Preferred Stock - Par Value $1.00 per share; 4 Million Shares Authorized, None Issued	0	0
Common Stock - Par Value $0.01 per share; 500 Million Shares Authorized; 428 Million and 402 Million Shares Issued, respectively	4	4
Additional Paid in Capital	4,761	3,624
Accumulated Other Comprehensive Loss	(97)	(90)
Treasury Stock, at Cost; 38 Million Shares	(683)	(671)
Retained Earnings	7,372	7,458
Total Shareholders’ Equity	11,357	10,325
Total Liabilities and Shareholders’ Equity	$ 23,261	$ 22,553