Income Taxes (Schedule Of Other Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Payroll taxes	$ 26.5	$ 27.4	$ 30.6
Property, franchise and capital stock taxes	$ 6.2	$ 6.4	$ 6.4