Nature Of Operations (Reconciliation Of Total Consolidated Operating Income To Earnings Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Nature Of Operations [Abstract]
Total consolidated operating income	$ 239.1	$ 265.6	$ 284.9
Interest expense	46.0	68.7	53.6
Other non-operating expense	10.5	2.0	0.2
Other non-operating income	(2.6)	(3.8)	(3.5)
Earnings from continuing operations before income taxes	$ 185.2	$ 198.7	$ 234.6