Industry Segments and Geographic Area Information Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) group	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Concentration Risk [Line Items]
Export sales from United States | $	$ 213.8	$ 224.9	$ 234.5
Net Sales Total | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	11.00%	14.00%
Long-lived assets Total | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	10.00%	12.00%
Canada | International Net Sales | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	33.00%
Canada | International Long-lived assets | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%
United Kingdom | International Net Sales | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	21.00%
United Kingdom | International Long-lived assets | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	25.00%
SWITZERLAND | International Net Sales | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%
BRAZIL | International Net Sales | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%
MEXICO | International Net Sales | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%
MEXICO | International Long-lived assets | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	22.00%
Electrical
Concentration Risk [Line Items]
Number Of business groups | group	3