Income Taxes (Schedule Of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Earnings (loss) before income taxes, Domestic	$ 299.7	$ 234.0	$ 224.1
Earnings (loss) before income taxes, Foreign	(0.3)	8.7	(2.0)
Earnings from continuing operations before income taxes	299.4	242.7	222.1
Current income tax expense (benefit), Federal	31.4	45.7	26.2
Current income tax expense (benefit), Foreign	0.8	2.1	1.4
Current income tax expense (benefit), State	6.3	8.0	4.7
Current income tax expense (benefit), Total	38.5	55.8	32.3
Deferred income tax expense (benefit), Federal	15.1	(3.7)	(36.6)
Deferred income tax expense (benefit), Foreign	(0.3)		(0.1)
Deferred income tax expense (benefit), State	3.8	1.0	5.9
Deferred income tax expense (benefit), Total	18.6	(2.7)	(30.8)
Income tax expense (benefit)	$ 57.1	$ 53.1	$ 1.5