Derivative Financial Instruments (Cash Flow Hedge Derivative Gains and Losses Recognized in AOCI and Reclassified to Earnings) (Details) - Asset And Liability Management - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net Gain/(Loss) Recognized in AOCI	$ 4.2	$ (7.9)
Net Gain/(Loss) Reclassified from AOCI to Net Income	(1.5)	(2.1)
Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net Gain/(Loss) Recognized in AOCI	5.2	3.2
Net Gain/(Loss) Reclassified from AOCI to Net Income	0.9	1.1
Net Gain/(Loss) Reclassified from AOCI to Net Income | Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Other Operating Income	(1.1)	(1.6)
Interest Income	0.0	0.0
Other Operating Expense	(0.4)	(0.5)
Net Gain/(Loss) Reclassified from AOCI to Net Income | Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Other Operating Income	0.0	0.0
Interest Income	0.9	1.1
Other Operating Expense	$ 0.0	$ 0.0