Restructuring Charges (Description of Reserves) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Details activity within the restructuring reserves
Beginning Balance	$ 0.9	$ 1.6
Charged to Earnings	1.8	3.2	$ 1.9
Cash Utilization	(2.7)	(3.2)
Non-Cash Utilization and Other	0.0	(0.7)
Ending Balance	0.0	0.9	1.6
Severance and Related Expense [Member]
Details activity within the restructuring reserves
Beginning Balance	0.7	1.5
Charged to Earnings		2.6
Cash Utilization	(0.5)	(2.9)
Non-Cash Utilization and Other	0.0	(0.5)
Ending Balance	0.0	0.7	1.5
Asset Write-offs and Accelerated Depreciation [Member]
Details activity within the restructuring reserves
Beginning Balance	0.0	0.1
Charged to Earnings		0.3
Cash Utilization	(0.2)	(0.2)
Non-Cash Utilization and Other	(0.1)	(0.2)
Ending Balance	0.0	0.0	0.1
Equipment Moves [Member]
Details activity within the restructuring reserves
Beginning Balance	0.0	0.0
Charged to Earnings		0.0
Cash Utilization	0.0	0.0
Non-Cash Utilization and Other	0.0	0.0
Ending Balance	0.0	0.0	0.0
Lease Termination [Member]
Details activity within the restructuring reserves
Beginning Balance	0.2	0.0
Charged to Earnings		0.2
Cash Utilization	(0.2)	0.0
Non-Cash Utilization and Other	0.0	0.0
Ending Balance	0.0	0.2	0.0
Other [Member]
Details activity within the restructuring reserves
Beginning Balance	0.0	0.0
Charged to Earnings		0.1
Cash Utilization	(1.8)	(0.1)
Non-Cash Utilization and Other	0.1	0.0
Ending Balance	$ 0.0	$ 0.0	$ 0.0