Income Taxes (Schedule Of Income Before Income Tax, Domestic And Foreign) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Income before Income Taxes, Domestic	$ 327.6	$ 151.1	$ 185.1
Income before Income Taxes, Foreign	23.3	15.2	14.8
Income before Provision for Income Taxes	$ 350.9	$ 166.3	$ 199.9