v2.4.0.6
Consolidated Balance Sheets (USD $)
In Millions, except Per Share data, unless otherwise specified
Jun. 30, 2009
Mar. 31, 2009
Dec. 31, 2008
Jun. 30, 2008
Mar. 31, 2008
Dec. 31, 2007
Cash and Cash Equivalents, at Carrying Value [Abstract]            
Cash and Cash Equivalents $ 956   $ 1,140 $ 983   $ 660
Accounts Receivable, Net, Current [Abstract]            
Accounts Receivable, Net 450   423      
Commodity Derivative Assets, Current 203   437      
Inventory, Net [Abstract]            
Inventories, Current 107   105      
Assets Held-for-sale, Current [Abstract]            
Asset Held for Sale 0   26      
Prepaid Expense, Current [Abstract]            
Prepaid Expenses and Other Assets, Current 21   27      
Assets, Current, Total 1,737   2,158      
Assets, Noncurrent [Abstract]            
Goodwill 758   759      
Commodity Derivative Assets, Noncurrent 7   33      
Property, Plant and Equipment, Gross [Abstract]            
Oil and Gas Properties (Successful Efforts Method of Accounting) 12,161   11,963      
Property, Plant and Equipment, Other 224   175      
Property, Plant and Equipment, Gross, Total 12,385   12,138      
Accumulated Depreciation, Depletion and Amortization (3,504)   (3,134)      
Property, Plant and Equipment, Net, Total 8,881   9,004      
Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]            
Equity Method Investments 335   311      
Mutual Fund Investments 90   84      
Other Assets, Noncurrent 43   35      
Assets, Total 11,851   12,384      
Accounts Payable and Accrued Liabilities [Abstract]            
Accounts Payable - Trade 493   579      
Taxes Payable [Abstract]            
Income Taxes Payable 69   130      
Deferred Income Taxes, Net, Current 25   142      
Interest Payable 38   9      
Short-term Borrowings [Abstract]            
Short-term Borrowings, Total 0   25      
Deferred Revenue and Credits, Current [Abstract]            
Deferred Gain on Asset Sale, Current 0   24      
Commodity Derivative Liabilities, Current 39   23      
Asset Retirement Obligations, Current 44   27      
Accrued and Other Liabilities, Current 182   215      
Liabilities, Current, Total 890   1,174      
Long-term Debt and Capital Lease Obligations [Abstract]            
Long-Term Debt 2,416   2,241      
Deferred Compensation Liabilities, Noncurrent 182   159      
Asset Retirement Obligations, Noncurrent [Abstract]            
Asset Retirement Obligations, Noncurrent, Total 187   184      
Deferred Income Taxes, Noncurrent 1,947   2,174      
Accrued Benefit Costs, Noncurrent 83   81      
Commodity Derivative Liabilities - Noncurrent 53   2      
Other Liabilities, Noncurrent 34   60      
Liabilities, Total 5,792   6,075      
Stockholders' Equity [Abstract]            
Common Stock, Value 645   641      
Additional Paid in Capital [Abstract]            
Additional Paid in Capital, Total 2,229   2,193      
Treasury Stock, Value (615)   (614)      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]            
Accumulated Other Comprehensive Loss (91)   (110)      
Retained Earnings (Accumulated Deficit) [Abstract]            
Retained Earnings 3,891   4,199      
Total Shareholders' Equity 6,059 6,125 6,309 4,985 5,043 4,809
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]            
Preferred Stock, Par or Stated Value Per Share $ 1.00   $ 1.00      
Preferred Stock, Shares Authorized 4   4      
Preferred Stock, Shares Issued 0   0      
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]            
Common Stock, Par or Stated Value Per Share $ 3.333   $ 3.333      
Common Stock, Shares Authorized 250   250      
Common Stock, Shares Issued 193   192      
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract]            
Treasury Stock, Shares 19   19      
Total Liabilities and Shareholders' Equity $ 11,851   $ 12,384