Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets, Net [Abstract]
Accounts receivable allowances	$ 1.6	$ 3.0
Inventories	7.6us-gaap_DeferredTaxAssetsInventory	9.1us-gaap_DeferredTaxAssetsInventory
Compensation and employee benefits	6.6	8.0
Tax credit carryforwards	33.9	35.8
Net operating loss carryforwards	149.4	115.2
Accrued liabilities and other reserves	7.0	9.0
Pension	9.0	6.0
Property, plant and equipment	10.2	8.9
Intangible assets, net	49.6	55.3
Capital losses	11.5	0
Other, net	0.7us-gaap_DeferredTaxAssetsOther	1.8us-gaap_DeferredTaxAssetsOther
Total deferred tax assets	287.1us-gaap_DeferredTaxAssetsGross	252.1us-gaap_DeferredTaxAssetsGross
Valuation allowance	(262.4)	(239.4)	(239.1)
Net deferred tax assets	24.7us-gaap_DeferredTaxAssetsNet	12.7us-gaap_DeferredTaxAssetsNet
Unremitted earnings of foreign subsidiaries	(15.7)	0
Total deferred tax liabilities	0	0
Total deferred tax liabilities	(15.7)us-gaap_DeferredTaxLiabilities	0us-gaap_DeferredTaxLiabilities
Net deferred tax assets	9.0us-gaap_DeferredTaxAssetsLiabilitiesNet	12.7us-gaap_DeferredTaxAssetsLiabilitiesNet
Valuation allowance	262.4	239.4	239.1
Deferred tax asset - current	3.2us-gaap_DeferredTaxAssetsNetCurrent	4.6us-gaap_DeferredTaxAssetsNetCurrent
Deferred tax asset - non-current	8.1us-gaap_DeferredTaxAssetsNetNoncurrent	9.5us-gaap_DeferredTaxAssetsNetNoncurrent
Deferred tax liability - current	0us-gaap_DeferredTaxLiabilitiesCurrent	(0.4)us-gaap_DeferredTaxLiabilitiesCurrent
Deferred tax liability - non-current	$ (2.3)	$ (1.0)

Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Total

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Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities and Other Reserves

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment.

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The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance.

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

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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