Information on Business Segments (Property, Plant and Equipment by Country) (Details) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Property, plant and equipment, net	[1]	$ 209.1	$ 235.5
U.S.
Segment Reporting Information [Line Items]
Property, plant and equipment, net		111.5	122.0
U.K.
Segment Reporting Information [Line Items]
Property, plant and equipment, net		38.9	34.1
Brazil
Segment Reporting Information [Line Items]
Property, plant and equipment, net		31.9	49.3
Australia
Segment Reporting Information [Line Items]
Property, plant and equipment, net		10.6	12.0
Other countries
Segment Reporting Information [Line Items]
Property, plant and equipment, net		$ 16.2	$ 18.1

[1] Net property, plant and equipment as of December 31, 2015 and 2014 contained $40.7 million and $37.0 million of computer software assets, which are classified within machinery and equipment and construction in progress. Amortization of software costs was $6.1 million, $7.4 million and $6.7 million for the years ended December 31, 2015, 2014 and 2013, respectively.