Supplemental Balance Sheet Information (Schedule Of Selected Supplemental Balance Sheet Information) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Inventories:
Purchased components and raw material	$ 80.1		$ 67.7
Work in process	38.6		35.6
Finished goods	37.4		35.6
Inventories, net	156.1		138.9
Maintenance and repair tooling	3.4		3.3
Income taxes	3.5		10.9
Other	13.3		10.2
Other	20.2		24.4
Property, plant and equipment:
Land	5.4		5.6
Buildings	54.5		53.4
Machinery and equipment	289.7		266.7
Construction in progress	18.8		24.7
Property, plant and equipment, gross	368.4		350.4
Accumulated depreciation	(239.4)		(228.1)
Property, plant and equipment net	129.0		122.3
Other current liabilities:
Compensation and benefits	29.4		26.9
Customer rebates	7.9		6.5
Interest	1.8		0.6
Taxes other than income taxes	3.6		3.2
Warranty	8.8		3.5
Environmental	1.2		1.3
Income taxes	0.6		0.9
Restructuring	1.4	$ 1.4	3.3
Other	8.1		7.3
Other current liabilities	$ 62.8		$ 53.5