Nature Of Operations And Significant Accounting Policies (Summary Of Inventories) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
excessandobsoleteinventoryreserve	$ 57.9	$ 54.1
Finished goods	101.1	97.7
Finished parts and subassemblies	46.1	38.2
Work in process	51.6	56.0
Raw materials	150.5	150.6
Total inventories	$ 349.3	$ 342.5