Objectives And Strategies For Using Derivatives (Narratives) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value Hedge Ineffectiveness is Immaterial Assertion	Fair value hedges resulted in no significant ineffectiveness in the three months ended March 31, 2014 and 2013
Gain from Hedged Firm Commitment Not Qualifying as Fair Value Hedge	$ 0	$ 0
Cash Flow Hedge Ineffectiveness is Immaterial	Cash flow hedges resulted in no significant ineffectiveness for the three months ended March 31, 2014 and 2013
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	0	0
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	2,300,000,000
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	14,000,000	56,000,000
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Maturity Date	Dec. 31, 2016
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	150,000,000
Interest Rate Swap [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	250,000,000
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	200,000,000
Foreign currency exchange contracts | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 1,000,000,000