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Derivative Instruments - Impact on Statements of Income, Net Investment Hedges (Details 2c) (Net Investment Hedging [Member], Foreign exchange, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net Investment Hedging [Member] \| Foreign exchange
Net investment hedge gains and losses [Abstract]
Excluded components recorded directly in income	$ (77)	$ (55)
Gains/(losses) - effective portion recorded in OCI	$ 420	$ (267)

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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