Consolidated Balance Sheets (unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current Assets
Cash and Cash Equivalents	$ 1,354	$ 1,117
Accounts Receivable, Net	865	947
Other Current Assets	545	547
Total Current Assets	2,764	2,611
Property, Plant and Equipment
Oil and Gas Properties (Successful Efforts Method of Accounting)	22,837	22,243
Property, Plant and Equipment, Other	564	517
Total Property, Plant and Equipment, Gross	23,401	22,760
Accumulated Depreciation, Depletion and Amortization	(7,284)	(7,035)
Total Property, Plant and Equipment, Net	16,117	15,725
Goodwill	621	627
Other Noncurrent Assets	690	679
Total Assets	20,192	19,642
Current Liabilities
Accounts Payable - Trade	1,178	1,354
Other Current Liabilities	1,021	988
Total Current Liabilities	2,199	2,342
Long-Term Debt	5,011	4,566
Deferred Income Taxes, Noncurrent	2,449	2,441
Other Noncurrent Liabilities	1,172	1,109
Total Liabilities	10,831	10,458
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; 401 Million and 400 Million Shares Issued, respectively	4	4
Additional Paid in Capital	3,502	3,463
Accumulated Other Comprehensive Loss	(114)	(117)
Treasury Stock, at Cost; 38 Million Shares	(674)	(659)
Retained Earnings	6,643	6,493
Total Shareholders’ Equity	9,361	9,184
Total Liabilities and Shareholders’ Equity	$ 20,192	$ 19,642