v2.4.0.6
Separation of Downstream Business (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Apr. 30, 2012
Assets          
Cash and cash equivalents         $ 3,603
Accounts and notes receivable         7,295
Accounts and notes receivable-related parties         1,501
Inventories         5,017
Prepaid expenses and other current assets         996
Total current assets of discontinued operations         18,412
Investments and long-term receivables         10,826
Loans and advances-related parties         1
Net properties, plants and equipment         15,258
Goodwill         3,330
Intangibles         730
Other assets         95
Total assets of discontinued operations         48,652
Liabilities          
Accounts payable         12,064
Accounts payable-related parties         938
Short-term debt         7,814
Accrued income and other taxes         493
Employee benefit obligations         219
Other accruals         952
Total current liabilities of discontinued operations         22,480
Long-term debt         175
Asset retirement obligations and accrued environmental costs         771
Deferred income taxes         4,980
Employee benefit obligations         1,166
Other liabilities and deferred credits         426
Total liabilities of discontinued operations         29,998
Sales and other operating revenues and income (loss) from discontinued operations          
Sales and other operating revenues from discontinued operations 2 50,590 62,109 147,954  
Income (loss) from discontinued operations before-tax 2 1,574 1,792 4,307  
Income tax expense (benefit) 0 438 542 1,327  
Income from discontinued operations $ 2 $ 1,136 $ 1,250 $ 2,980