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Variable Interest Entities And Unconsolidated Investments (Details 3) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Variable Interest Entities and Unconsolidated Investments (Textuals) [Abstract]
Other cash contributions to our VIEs other than amounts contractually required			$ 52	$ 1
Distribution from equity method investee			6	2
Greenfield
Variable Interest Entities and Unconsolidated Investments (Textuals) [Abstract]
Distribution from equity method investee	2		2
Whitby
Variable Interest Entities and Unconsolidated Investments (Textuals) [Abstract]
Distribution from equity method investee	4	2	4	2
Other VIE Aggregate Capacity
Variable Interest Entities and Unconsolidated Investments (Textuals) [Abstract]
Other cash contributions to our VIEs other than amounts contractually required			$ 110

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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