Income Taxes Components of Current Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Total current deferred tax assets	$ 40.2us-gaap_DeferredTaxAssetsNetCurrent	$ 34.9us-gaap_DeferredTaxAssetsNetCurrent
Unrealized foreign exchange gain and other	(0.1)	(0.1)
Current deferred tax asset, net	40.1	36.3
Deferred Tax Assets, Current [Member]
Employee benefits	26.0	14.5
Inventory	7.5	8.0
Prepaid taxes and other	16.9	24.6
Valuation allowance	(10.2)	(10.7)
Total current deferred tax assets	$ 40.2	$ 36.4

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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