Derivatives and Hedging Transactions (Details 3) In Millions, unless otherwise specified	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2015 Net Investment Hedges EUR (€)	Dec. 31, 2014 Net Investment Hedges EUR (€)	Mar. 31, 2015 Foreign currency forward contracts USD ($)	Dec. 31, 2014 Foreign currency forward contracts USD ($)	Sep. 30, 2014 Foreign currency forward contracts Net Investment Hedges EUR (€)	Mar. 31, 2015 Interest rate swap USD ($)	Mar. 31, 2015 Interest rate swap EUR (€)	Dec. 31, 2014 Interest rate swap USD ($)	Dec. 31, 2014 Interest rate swap EUR (€)	Mar. 31, 2015 Derivatives designated as hedging instruments Foreign currency forward contracts USD ($)	Dec. 31, 2014 Derivatives designated as hedging instruments Foreign currency forward contracts USD ($)	Mar. 31, 2015 Derivatives designated as hedging instruments Interest rate swap USD ($)	Dec. 31, 2014 Derivatives designated as hedging instruments Interest rate swap USD ($)	Mar. 31, 2015 Derivatives not designated as hedging instruments Foreign currency forward contracts USD ($)	Dec. 31, 2014 Derivatives not designated as hedging instruments Foreign currency forward contracts USD ($)
Fair value company's outstanding derivatives
Asset Derivatives	$ 163.3	$ 75.5										$ 38.1	$ 17.9	$ 1.3		$ 123.9	$ 57.6
Liability Derivatives	58.2	52.1										1.5	0.6	30.9	24.2	25.8	27.3
Notional values			€ 935	€ 495	$ 2,700	$ 2,800	€ 75	$ 1,425	€ 400	$ 725	€ 400