Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2011

Supplemental Cash Flow Information [Abstract]

Changes in current assets and current liabilities

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



	Year Ended December 31,
	2011			2010			2009
Decrease (increase) in current assets:
Receivables, net	$	(3,110	)	$	(679	)	$	(806	)
Inventories	643			(407		)	(77		)
Income taxes receivable	128			545			(668		)
Prepaid expenses and other	(2		)	107			56
Increase (decrease) in current liabilities:
Accounts payable	2,004			670			1,475
Accrued expenses	(18		)	(99		)	73
Taxes other than income taxes	312			(66		)	107
Income taxes payable	124			(3		)	95
Changes in current assets and current liabilities	$	81		$	68		$	255

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



	Year Ended December 31,
	2011			2010			2009
Interest paid in excess of amount capitalized	$	(397	)	$	(457	)	$	(390	)
Income taxes received (paid), net	(486		)	690			(165		)

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 all years presented and are summarized as follows (in millions):



	Year Ended December 31,
	2011		2010			2009
Cash provided by (used in) operating activities:
Paulsboro Refinery	$	—	$	88		$	10
Delaware City Refinery	—		(26		)	(126		)
Cash used in investing activities:
Paulsboro Refinery	—		(41		)	(121		)
Delaware City Refinery	—		—			(153		)