Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Unrecognized tax benefits at January 1	$ 10.0	$ 7.8	$ 11.8
Additions based on tax positions related to current year	3.1	2.7	2.3
Additions in tax positions of prior years		0.4	0.1
Reductions in tax positions of prior years	(0.4)		(0.1)
Settlements	(0.2)		(5.8)
Reductions as a result of a lapse of the statute of limitations	(1.5)	(0.9)	(0.5)
Unrecognized tax benefits at December 31	$ 11.0	$ 10.0	$ 7.8