Derivatives (Details 2)		12 Months Ended							12 Months Ended			12 Months Ended
	Dec. 31, 2014 Eurobond repaid July 2014 EUR (€)	Dec. 31, 2014 Net Investment Hedges USD ($)	Dec. 31, 2013 Net Investment Hedges USD ($)	Dec. 31, 2012 Net Investment Hedges USD ($)	Dec. 31, 2014 Net Investment Hedges Foreign currency forward contracts USD ($)	Dec. 31, 2013 Net Investment Hedges Foreign currency forward contracts USD ($)	Dec. 31, 2014 Net Investment Hedges Foreign currency forward contracts EUR (€)	Nov. 30, 2014 Net Investment Hedges Foreign currency forward contracts EUR (€)	Dec. 31, 2014 Net Investment Hedges Foreign currency forward contracts Cost of Sales USD ($)	Dec. 31, 2013 Net Investment Hedges Foreign currency forward contracts Cost of Sales USD ($)	Nov. 30, 2013 Net Investment Hedges Foreign currency forward contracts that matured in November 2013 EUR (€)	Dec. 31, 2014 Net Investment Hedges Foreign Currency Denominated Debt USD ($)	Dec. 31, 2013 Net Investment Hedges Foreign Currency Denominated Debt USD ($)	Dec. 31, 2012 Net Investment Hedges Foreign Currency Denominated Debt USD ($)	Dec. 31, 2014 Net Investment Hedges Foreign Currency Denominated Debt EUR (€)
Net investment hedges
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		$ 246,000,000	$ (70,000,000)	$ (29,000,000)	$ 94,000,000	$ 12,000,000						$ 152,000,000	$ (82,000,000)	$ (29,000,000)
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income		1,000,000	0	0					1,000,000	0		0	0	0
Face amount	1,025,000,000
Derivative notional amount							200,000,000	1,300,000,000			594,000,000
Face amount of debt dedesignated from net investment hedge															1,850,000,000
Effective portion of net investment hedge reclassified out of other comprehensive income into income		$ 0