Income Taxes (Unrecognized Tax Benefits And Associated Interest And Penalties) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits, beginning balance	$ 44.2	$ 36.9	$ 46.1
Additions for tax positions related to prior years	1.0	3.5	2.0
Additions for tax positions related to current year		3.8
Reductions for tax positions due to settlements	(1.7)		(11.2)
Unrecognized tax benefits, ending balance	43.5	44.2	36.9
Federal, State and Foreign Tax
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits, beginning balance	37.1	30.5	39.9
Additions for tax positions related to prior years	0.6	3.1	(0.1)
Additions for tax positions related to current year		3.5
Reductions for tax positions due to settlements	(1.4)		(9.3)
Unrecognized tax benefits, ending balance	36.3	37.1	30.5
Accrued Interest and Penalties
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits, beginning balance	7.1	6.4	6.2
Additions for tax positions related to prior years	0.4	0.4	2.1
Additions for tax positions related to current year		0.3
Reductions for tax positions due to settlements	(0.3)		(1.9)
Unrecognized tax benefits, ending balance	$ 7.2	$ 7.1	$ 6.4