Special Charges (Table) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Termination benefit costs			$ 0.6
Special charges for workforce reductions and advisory costs	$ 0.6	$ 0.8	0.5	$ (2.2)
Payments for one-time termination benefits			(1.2)
Restructuring liability	0.7		0.7		$ 1.4
Contract Termination [Member]
Termination benefit costs				$ 2.9
Special charges for workforce reductions and advisory costs			0.0
Payments for one-time termination benefits			(0.2)
Restructuring liability	0.0		0.0		0.2
Other Restructuring [Member]
Special charges for workforce reductions and advisory costs			0.5
Payments for one-time termination benefits			(1.0)
Restructuring liability	$ 0.7		$ 0.7		$ 1.2