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Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Change in fair value of available-for-sale securities, income tax	$ 0	$ 1
Available-for-sale securities, reclassification to earnings, income tax	0	0
Foreign currency translation adjustments, income tax	(1)	(4)
Foreign currency, reclassification to earnings, income tax	0	0
Change in derivative fair value, income tax	(4)	(9)
Derivative reclassification to earnings, income tax	(28)	(8)
Pension, reclassification to earnings, due to amortization of prior service cost and net gains (losses), income tax	$ (3)	$ (2)

X

- Definition

For each annual statement of income presented, the tax effect of the net gain (loss) and amortization of net prior service costs recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.

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Tax effect on the change in the balance sheet adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into reporting currency of the reporting entity for the period being reported.

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Tax effect on reclassification adjustment for translation gains or losses realized upon the sale or complete or substantially complete liquidation of an investment in foreign entity.

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Tax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on.

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