Derivative Financial Instruments (Effect Of Cash Flow Hedges On Financial Statements) (Details) (Forward Starting Pay Fixed Swaps [Member], Cash Flow Hedge [Member], Interest Expense [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Forward Starting Pay Fixed Swaps [Member] | Cash Flow Hedge [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion Pretax Hedge Gain (Loss) Recognized in Other Comprehensive (Loss) Income	$ 0	$ 0	$ (4.0)
Effective Portion Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income	(5.0)	(4.6)	(4.2)
Ineffective Portion Hedge Gain (Loss) Recognized	$ 0	$ 0	$ (0.1)