Financial Instruments (Gains (Losses) From Equity Method And Other Investments) (Details) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Financial Instruments [Abstract]
Equity method gains (losses)		$ (4)	$ 14	$ 13
Gains (losses) on cost method investments		1	(2)	2
Gains (losses) from equity and cost method investments		(3)	12	15
Realized gains on available for sale securities		1	1	9
Investment income (loss)		$ (2)	$ 13	$ 24

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details