Nature Of Operations (Reconciliation Of Total Consolidated Operating Income To Earnings Before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment operating income	$ 187.4	$ 239.1	$ 265.6
Interest expense	45.3	46.0	68.7
Other non-operating expense	(23.5)	(10.5)	(2.0)
Other non-operating income	(5.3)	(2.6)	(3.8)
Earnings from continuing operations before income taxes	123.9	185.2	198.7
Operating Segments [Member]
Segment operating income	187.4	239.1	265.6
Segment Reconciling Items [Member]
Interest expense	45.3	46.0	68.7
Other non-operating expense	(23.5)	(10.5)	(2.0)
Other non-operating income	$ (5.3)	$ (2.6)	$ (3.8)