Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2013

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):



	Three Months Ended March 31,
	2013			2012
Decrease (increase) in current assets:
Receivables, net	$	409		$	1,159
Inventories	(1,074		)	(471		)
Income taxes receivable	79			(14		)
Prepaid expenses and other	(233		)	6
Increase (decrease) in current liabilities:
Accounts payable	561			410
Accrued expenses	181			(100		)
Taxes other than income taxes	318			9
Income taxes payable	14			(96		)
Changes in current assets and current liabilities	$	255		$	903

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



	Three Months Ended March 31,
	2013		2012
Interest paid in excess of amount capitalized	$	56	$	45
Income taxes paid, net	48		142