Business Segment Geographic Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 724.4	$ 823.6	$ 854.7
Property, plant, and equipment, net	103.7	122.8	157.0
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	141.5	151.6	186.3
Property, plant, and equipment, net	28.9	27.1	30.2
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	125.8	135.9	168.0
Other North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	15.7	15.7	18.3
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	228.4	282.7	259.3
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	182.8	223.9	193.4
Property, plant, and equipment, net	41.7	60.1	85.4
Other South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	45.6	58.8	65.9
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	191.3	207.1	203.2
Property, plant, and equipment, net	14.1	15.2	16.6
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	123.9	115.6	119.7
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	13.0	20.0	26.2
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	105.0	74.5	66.3
Property, plant, and equipment, net	19.0	20.4	24.8
Other Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	5.9	21.1	27.2
Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 39.3	$ 66.6	$ 86.2