This element represents cash provided by or used in the investing activities of the entity's discontinued operations during the period. This element is only used by those entities that separately report cash flows attributable to discontinued operations. If using this element, it is an indication that the cash flows of the entity which are detailed in reconciling to cash provided by or used in investing activities reflect only cash flows attributable to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3521-108585

Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2010 Paulsboro Refinery [Member]	Jun. 30, 2010 Delaware City Refinery [Member]	Feb. 04, 2010 ASA And Renew Acquisitions [Member]
Decrease (increase) in current assets:
Receivables, net	$ (1,422)	$ (394)
Inventories	978	102
Income taxes receivable	175	808
Prepaid expenses and other	(3)	124
Increase (decrease) in current liabilities:
Accounts payable	1,147	122
Accrued expenses	202	(145)
Taxes other than income taxes	(52)	(151)
Income taxes payable	122	147
Changes in current assets and current liabilities	1,147	613
Cash flows related to interest and income taxes
Interest paid in excess of amount capitalized	221	225
Income taxes paid, net	(10)	(797)
Cash flows related to discontinued operations
Cash used in operating activities			32	(76)
Cash used in investing activities			(28)	0
Supplemental Cash Flow Information (Textual)
Number of plants purchased					3
Noncash contribution of property, plant and equipment	$ 2
Noncash investing or financing activities		0