Schedule of Income Tax Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components Of Income Tax Expense Benefit Continuing Operations Abstract
Current: Federal	$ 1.0	$ (0.8)	$ 0.5
Current: State	(0.8)	(1.3)	(1.5)
Current: Foreign	10.1	6.2	14.4
Total Current	10.3	4.1	13.4
Deferred: Federal	1.3	2.4	(115.8)
Deferred: State	(0.5)	(14.4)	(3.5)
Deferred: Foreign	(0.1)	1.1	(1.0)
Total Deferred	0.7	(10.9)	(120.3)
Income tax provision (benefit)	$ 11.0	$ (6.8)	$ (106.9)