Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current Assets
Cash and Cash Equivalents	$ 294,064	$ 615,726
Accounts Receivable, Net	1,543,491	1,451,227
Inventories	561,512	590,594
Assets from Price Risk Management Activities	451,399	450,730
Income Taxes Receivable	24,593	26,609
Other	166,974	119,052
Total	3,042,033	3,253,938
Property, Plant and Equipment
Oil and Gas Properties (Successful Efforts Method)	35,092,346	33,664,435
Other Property, Plant and Equipment	2,277,035	2,149,989
Total Property, Plant and Equipment	37,369,381	35,814,424
Less: Accumulated Depreciation, Depletion and Amortization	(15,235,540)	(14,525,600)
Total Property, Plant and Equipment, Net	22,133,841	21,288,824
Other Assets	379,662	296,035
Total Assets	25,555,536	24,838,797
Current Liabilities
Accounts Payable	2,289,903	2,033,615
Accrued Taxes Payable	123,391	147,105
Dividends Payable	45,333	42,578
Liabilities from Price Risk Management Activities	25,787	0
Deferred Income Taxes	122,833	135,989
Other	165,100	163,032
Total	2,772,347	2,522,319
Long-Term Debt	5,010,523	5,009,166
Other Liabilities	790,416	799,189
Deferred Income Taxes	3,990,407	3,867,219
Stockholders' Equity
Common Stock, $0.01 Par, 640,000,000 Shares Authorized and 269,967,577 Shares Issued at March 31, 2012 and 269,323,084 Shares Issued at December 31, 2011	202,700	202,693
Additional Paid in Capital	2,328,435	2,272,052
Accumulated Other Comprehensive Income	429,451	401,746
Retained Earnings	10,067,541	9,789,345
Common Stock Held in Treasury, 386,828 Shares at March 31, 2012 and 303,633 Shares at December 31, 2011	(36,284)	(24,932)
Total Stockholders' Equity	12,991,843	12,640,904
Total Liabilities and Stockholders' Equity	$ 25,555,536	$ 24,838,797