Income Taxes (Schedule Of Other Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Payroll taxes	$ 16.0	$ 15.6	$ 14.2
Property, franchise and capital stock taxes	$ 3.8	$ 3.7	$ 4.0