Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Information [Abstract]

Changes in current assets and current liabilities

In order to determine net cash provided by operating activities, net income is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):



	Year Ended December 31,
	2012			2011			2010
Decrease (increase) in current assets:
Receivables, net	$	437		$	(3,110	)	$	(679	)
Inventories	(282		)	643			(407		)
Income taxes receivable	51			128			545
Prepaid expenses and other	(28		)	(2		)	107
Increase (decrease) in current liabilities:
Accounts payable	(113		)	2,004			670
Accrued expenses	13			(18		)	(99		)
Taxes other than income taxes	(260		)	312			(66		)
Income taxes payable	(120		)	124			(3		)
Changes in current assets and current liabilities	$	(302	)	$	81		$	68

Cash flows related to interest and income taxes were as follows (in millions):



	Year Ended December 31,
	2012		2011		2010
Interest paid in excess of amount capitalized	$	302	$	397	$	457
Income taxes paid (received), net	705		486		(690		)

Cash flows related to the discontinued operations of the Paulsboro and Delaware City Refineries have been combined with the cash flows from continuing operations within each category in the statements of cash flows for the year ended December 31, 2010 and are summarized as follows (in millions):



	Year Ended December 31, 2010
Cash provided by (used in) operating activities:
Paulsboro Refinery	$	88
Delaware City Refinery	(26		)
Cash used in investing activities:
Paulsboro Refinery	(41		)
Delaware City Refinery	—