Special Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Special charges for workforce reductions and advisory costs	$ (2.9)	$ 0.3	$ (3.0)	$ 0.9
Termination benefit costs			(2.9)	0.8
Other restructuring costs				$ 0.1
Restructuring reserve, accrual adjustment			(2.9)
Restructuring liability, current	$ 0.6		0.6
Contract Termination [Member]
Termination benefit costs			$ (2.9)

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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