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Consolidating Financial Information (Details Textuals) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Consolidating Financial Information (Textuals) [Abstract]
Allowances, accounts receivable	$ 3		$ 3		$ 3
Excise taxes	$ 533	$ 482	$ 1,012	$ 919

The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services.

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