Derivative Financial Instruments (Effect Of Fair Value Hedges On Income Statement) (Details) - Fixed Rate Debt [Member] - Interest Rate Swaps [Member] - Interest Expense [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Hedge Gain Recognized	$ 0.2	$ 2.4
Hedged Item Loss Recognized	$ (0.2)	$ (2.4)