Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 5.5us-gaap_NetIncomeLoss	$ 2.4us-gaap_NetIncomeLoss
Other comprehensive loss, net of tax:
Defined benefit plan adjustments	0.1	0
Foreign currency translation loss	(2.7)	(1.3)
Other comprehensive loss, net of tax	(2.6)	(1.3)
Comprehensive income	$ 2.9us-gaap_ComprehensiveIncomeNetOfTax	$ 1.1us-gaap_ComprehensiveIncomeNetOfTax

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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