Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Decrease (increase) in current assets:
Receivables, net	$ 1,319	$ (1,258)
Inventories	(471)	622
Income taxes receivable	(14)	(25)
Prepaid expenses and other	6	10
Increase (decrease) in current liabilities:
Accounts payable	410	2,143
Accrued expenses	(100)	174
Taxes other than income taxes	9	(160)
Income taxes payable	(96)	97
Changes in current assets and current liabilities	1,063	1,603
Cash Flows Related to Interest and Income Taxes
Interest paid in excess of amount capitalized	45	77
Income taxes paid, net	142	3
Supplemental Cash Flow Information (Textual)
Noncash investing and financing activities, significant amounts	$ 0	$ 0

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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