Stock-Based Compensation (Schedule Of Fair Value Of The Restricted Stock Awards Granted During The Periods) (Details) (Restricted Stock [Member], USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	0	0	452,110	469,677
Estimated fair value (in millions)	$ 0	$ 0	$ 23.3	$ 21.9
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	0	0	438,342	448,549
Estimated fair value (in millions)	0	0	22.4	21.0
Percentage of shares granted expected to be distributed			95.00%	94.00%
Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	0	0	13,768	21,128
Estimated fair value (in millions)	$ 0	$ 0	$ 0.9	$ 0.9
Percentage of shares granted expected to be distributed			100.00%	100.00%