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Derivative Instruments and Hedging Activities (Details 3) (Foreign Exchange Contracts [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Foreign Exchange Contracts [Member]
Effect of derivative instruments in cash flow hedging relationships on income and other comprehensive income (OCI)
Gain (loss) recognized in OCI	$ 155	$ 192

- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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