Contingencies Enviromental liabilities rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Beginning Balance	$ 15.1
Ending Balance	10.8	$ 15.1
Receivable for environmental costs, recorded in Other assets	1.4
Reserve for Environmental Costs [Member]
Beginning Balance	15.0	15.9	$ 16.6
Adjusted to expense (income) during the year	(2.1)	1.2	0.7
Payments made	2.2	2.1	1.4
Translation	0.1	0.0	0.0
Ending Balance	10.6	$ 15.0	$ 15.9
Formal cost share [Member]
Other Unrecorded Amounts	1.9
Indemnification Agreement [Member]
Other Unrecorded Amounts	2.1
Other Reserves [Member]
Other Unrecorded Amounts	$ 0.3