Derivative Financial Instruments (Effect Of Fair Value Hedges On Income Statement) (Details) (Interest Expense [Member], Fixed Rate Debt [Member], Interest Rate Swaps [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Expense [Member] | Fixed Rate Debt [Member] | Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedge Gain Recognized	$ 25.5	$ 31.5	$ 38.2
Hedged Item Loss Recognized	$ (25.5)	$ (31.5)	$ (38.2)