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		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net Gain/(Loss) Recognized in AOCI	$ (2.0)	$ 6.5	$ 2.2	$ (1.4)
Net Gain/(Loss) Reclassified from AOCI to Net Income	(0.8)	(2.6)	(2.4)	(4.7)
Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net Gain/(Loss) Recognized in AOCI	2.7	(1.7)	7.8	1.5
Net Gain/(Loss) Reclassified from AOCI to Net Income	0.8	1.2	1.8	2.4
Net Gain/(Loss) Reclassified from AOCI to Net Income | Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Other Operating Income	(0.6)	(2.3)	(1.8)	(3.9)
Interest Income	0.0	0.0	0.0	0.0
Other Operating Expense	(0.2)	(0.3)	(0.6)	(0.8)
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	0.0	0.0
Interest Income	0.8	1.2	1.8	2.4
Other Operating Expense	$ 0.0	$ 0.0	$ 0.0	$ 0.0