Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets
Cash and Cash Equivalents	$ 1,318,817	$ 876,435
Accounts Receivable, Net	1,849,517	1,656,618
Inventories	566,004	683,187
Assets from Price Risk Management Activities	44,484	166,135
Income Taxes Receivable	42,296	29,163
Deferred Income Taxes	127,658	0
Other	243,191	178,346
Total	4,191,967	3,589,884
Property, Plant and Equipment
Oil and Gas Properties (Successful Efforts Method)	41,887,901	38,126,298
Other Property, Plant and Equipment	2,954,085	2,740,619
Total Property, Plant and Equipment	44,841,986	40,866,917
Less: Accumulated Depreciation, Depletion and Amortization	(19,242,795)	(17,529,236)
Total Property, Plant and Equipment, Net	25,599,191	23,337,681
Other Assets	356,112	409,013
Total Assets	30,147,270	27,336,578
Current Liabilities
Accounts Payable	2,247,714	2,078,948
Accrued Taxes Payable	200,477	162,083
Dividends Payable	50,753	45,802
Liabilities from Price Risk Management Activities	174,648	7,617
Deferred Income Taxes	0	22,838
Current Portion of Long-Term Debt	406,579	406,579
Other	267,162	200,191
Total	3,347,333	2,924,058
Long-Term Debt	5,906,494	5,905,602
Other Liabilities	846,780	894,758
Deferred Income Taxes	5,185,083	4,327,396
Commitments and Contingencies (Note 8)
Stockholders' Equity
Common Stock, $0.01 Par, 640,000,000 Shares Authorized and 273,061,895 Shares Issued at September 30, 2013 and 271,958,495 Shares Issued at December 31, 2012	202,731	202,720
Additional Paid in Capital	2,614,898	2,500,340
Accumulated Other Comprehensive Income	425,283	439,895
Retained Earnings	11,639,302	10,175,631
Common Stock Held in Treasury, 142,467 Shares at September 30, 2013 and 326,264 Shares at December 31, 2012	(20,634)	(33,822)
Total Stockholders' Equity	14,861,580	13,284,764
Total Liabilities and Stockholders' Equity	$ 30,147,270	$ 27,336,578