Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current Assets
Cash and Cash Equivalents	$ 1,228,016	$ 876,435
Accounts Receivable, Net	1,808,954	1,656,618
Inventories	657,400	683,187
Assets from Price Risk Management Activities	105,667	166,135
Income Taxes Receivable	23,450	29,163
Deferred Income Taxes	157,012	0
Other	260,341	178,346
Total	4,240,840	3,589,884
Property, Plant and Equipment
Oil and Gas Properties (Successful Efforts Method)	40,262,580	38,126,298
Other Property, Plant and Equipment	2,846,971	2,740,619
Total Property, Plant and Equipment	43,109,551	40,866,917
Less: Accumulated Depreciation, Depletion and Amortization	(18,529,163)	(17,529,236)
Total Property, Plant and Equipment, Net	24,580,388	23,337,681
Other Assets	255,924	409,013
Total Assets	29,077,152	27,336,578
Current Liabilities
Accounts Payable	2,201,940	2,078,948
Accrued Taxes Payable	161,608	162,083
Dividends Payable	50,614	45,802
Liabilities from Price Risk Management Activities	5,482	7,617
Deferred Income Taxes	4,310	22,838
Current Portion of Long-Term Debt	406,579	406,579
Other	189,770	200,191
Total	3,020,303	2,924,058
Long-Term Debt	5,906,210	5,905,602
Other Liabilities	795,308	894,758
Deferred Income Taxes	4,970,705	4,327,396
Stockholders' Equity
Common Stock, $0.01 Par, 640,000,000 Shares Authorized and 272,611,848 Shares Issued at June 30, 2013 and 271,958,495 Shares Issued at December 31, 2012	202,726	202,720
Additional Paid in Capital	2,576,441	2,500,340
Accumulated Other Comprehensive Income	408,257	439,895
Retained Earnings	11,228,011	10,175,631
Common Stock Held in Treasury, 277,274 Shares at June 30, 2013 and 326,264 Shares at December 31, 2012	30,809	33,822
Total Stockholders' Equity	14,384,626	13,284,764
Total Liabilities and Stockholders' Equity	$ 29,077,152	$ 27,336,578