Derivative Instruments and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities [Abstract]

Consolidated Balance Sheet: Fair Value of Derivatives Not Designated as Hedging Instruments

Type of Contract	Balance Sheet Classification	At June  30 2012			At December  31 2011
Commodity	Accounts and notes receivable, net		$	204		$	133
Commodity	Long-term receivables, net			53			75
Total Assets at Fair Value			$	257		$	208
Commodity	Accounts payable		$	57		$	36
Commodity	Deferred credits and other noncurrent obligations			70			66
Total Liabilities at Fair Value			$	127		$	102

Consolidated Statement of Income: The Effect of Derivatives Not Designated as Hedging Instruments

		Gain / (Loss) Three Months Ended June 30							Gain / (Loss) Six Months Ended June 30
Type of Contract	Statement of Income Classification	2012				2011			2012				2011
Commodity	Sales and other operating revenues		$	233			$	75		$	115			$	(324	)
Commodity	Purchased crude oil and products			8				27			(11	)			31
Commodity	Other income			(1	)			—			4				(2	)
			$	240			$	102		$	108			$	(295	)