Derivatives and Hedging Foreign Exchange Risk Management Narrative (Details)	12 Months Ended
	Dec. 31, 2013
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Maximum length of time hedged in foreign currency undesignated hedge	1 year
Cash Flow Hedging [Member]
Derivative [Line Items]
Foreign currency exposures, maximum average hedging period	2 years
Maximum length of time, foreign currency cash flow hedge	5 years
Net Investment Hedging [Member]
Derivative [Line Items]
Foreign currency exposures, maximum hedging period	2 years