Derivatives (Details 1)		1 Months Ended				1 Months Ended			12 Months Ended	1 Months Ended	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2014 Eurobond repaid July 2014 EUR (€)	Jun. 30, 2014 Fixed rate medium term note due 2019 USD ($)	Jul. 31, 2007 Fair value hedges Interest rate swap contracts Eurobond repaid July 2014 EUR (€)	Jul. 31, 2014 Fair value hedges Interest rate swap contracts Eurobond repaid July 2014 EUR (€)	Aug. 31, 2010 Fair value hedges Interest rate swap contracts Eurobond repaid July 2014 EUR (€)	Nov. 30, 2013 Fair value hedges Interest rate swap contracts Eurobond Due 2021 EUR (€)	Jun. 30, 2014 Fair value hedges Interest rate swap contracts Fixed rate medium term note due 2019 USD ($)	Jul. 31, 2007 Net Investment Hedges Eurobond repaid July 2014 EUR (€)	Dec. 31, 2007 Net Investment Hedges Eurobond repaid July 2014 EUR (€)	Nov. 30, 2013 Net Investment Hedges Eurobond Due 2021 EUR (€)	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges USD ($)	Sep. 30, 2013 Derivatives designated as hedging instruments Fair value hedges USD ($)	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges USD ($)	Sep. 30, 2013 Derivatives designated as hedging instruments Fair value hedges USD ($)	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts USD ($)	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts Interest expense USD ($)	Sep. 30, 2013 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts Interest expense USD ($)	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts Interest expense USD ($)	Sep. 30, 2013 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts Interest expense USD ($)
Derivatives in Fair Value Hedging Relationships
Derivative notional amount		$ 600,000,000	€ 400,000,000			€ 300,000,000	$ 600,000,000								$ 1,000,000,000
Term of debt instrument		5 years	7 years			8 years	5 years	7 years	7 years	8 years
Face amount	1,025,000,000	625,000,000	750,000,000			600,000,000	625,000,000	750,000,000	275,000,000	600,000,000
Termination of notional amount of fixed-to-floating interest rate swap					150,000,000
Remaining amount matured from Interest Rate Swap				250,000,000
Gain (loss) on termination of fixed-to-floating interest rate swap will be amortized over this debt's remaining life					18,000,000
Interest rate, stated percentage (as a percent)		1.625%				1.875%	1.625%
Gain (Loss) on Derivative Recognized in income											0	(3,000,000)	13,000,000	(11,000,000)		0	(3,000,000)	13,000,000	(11,000,000)
Gain (Loss) on Hedged Item Recognized in Income											0	3,000,000	(13,000,000)	11,000,000		0	3,000,000	(13,000,000)	11,000,000
Impact on earnings due to ineffective hedging for fair value derivatives													$ 0