Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 89.7us-gaap_NetIncomeLoss	$ 76.1us-gaap_NetIncomeLoss	$ 79.8us-gaap_NetIncomeLoss
Other Comprehensive Income (Loss), net of tax:
Foreign currency translation adjustments	(63.0)	5.1	9.9
Less: Reclassification adjustment for realized translation adjustments	0	(1.1)	0
Unrealized (losses) gains on derivative instruments	(4.8)	(7.1)	(0.4)
Less: Reclassification adjustment for losses (gains) on derivative instruments included in net income	4.6	0.4	(1.4)
Net gain (loss) from postretirement benefit plans	(9.8)	8.4	(4.5)
Less: Amortization of postretirement benefit plans' costs included in net periodic benefit cost	1.5	4.7	5.5
Other Comprehensive Income (Loss)	(71.5)	10.4	9.1
Comprehensive Income	$ 18.2us-gaap_ComprehensiveIncomeNetOfTax	$ 86.5us-gaap_ComprehensiveIncomeNetOfTax	$ 88.9us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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

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Amount after tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.

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