Impairment and Restructuring Charges (Details 1) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2016
Tangible Asset Impairment Charges				$ 0.0			$ 0.0
Severance Costs		$ 0.2		0.7		$ 0.4	1.9
Business Exit Costs		0.1		0.1		0.1	0.6
Restructuring, Settlement and Impairment Provisions	$ 0.3	0.3	$ 0.8	0.8	$ 0.5	2.5	2.5
Roll Forward consolidated restructuring accrual
Beginning Balance					$ 7.5		10.1
Expense							1.7
Payments							(4.3)
Ending Balance		7.5
Mobile Industries [Member]
Tangible Asset Impairment Charges				0.0			0.0
Severance Costs		0.0		0.6		0.2	1.8
Business Exit Costs		0.1		0.1		0.1	0.1
Restructuring, Settlement and Impairment Provisions		0.1		0.7		0.3	1.9
Process Industries [Member]
Tangible Asset Impairment Charges				0.0			0.0
Severance Costs		0.1		0.1		0.1	0.1
Business Exit Costs		0.0		0.0		0.0	0.0
Restructuring, Settlement and Impairment Provisions		$ 0.1		$ 0.1		$ 0.1	$ 0.1