Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Defined benefit plans	$ (236.7)	$ (192.8)	$ (240.6)	$ (197.9)
Defined benefit plans, other comprehensive income (loss), before reclassifications	3.1	4.5
Defined benefit plans, amounts reclassified from accumulated other comprehensive income (loss)	0.8	0.6
Defined benefit plans, net current period other comprehensive income (loss)	3.9	5.1
Foreign currency translation adjustments	(80.4)	(10.8)	(48.9)	(18.6)
Foreign currency translation adjustments, other comprehensive income (loss) arising during period, net of tax	(31.5)	7.8
Foreign currency translation adjustments, other comprehensive income (loss), reclassification adjustment, net of tax	0	0
Foreign currency translation adjustments	(31.5)	7.8
Unrecognized loss on derivatives	(7.9)	1.2	(7.4)	0.3
Unrecognized gain on derivatives, other comprehensive income (loss) arising during period, net of tax	(2.0)	0.9
Unrecognized gain on derivatives, other comprehensive income (loss), reclassification adjustment, net of tax	1.5	0
Change in derivatives	(0.5)	0.9
Accumulated other comprehensive income (loss), net of tax	(325.0)	(202.4)	(296.9)	(216.2)
Other comprehensive income (loss) arising during period, total, net of tax	(30.4)	13.2
Other comprehensive income (loss), reclassification adjustments, total, net of tax	2.3	0.6
Other comprehensive income (loss)	(28.1)	13.8
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax	(0.4)	(0.2)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, before Reclassification Adjustments, Tax	(1.6)	(2.5)
Cost of Sales [Member]
Defined benefit plans, amounts reclassified from accumulated other comprehensive income (loss)	0.9	0.8
Selling, General and Administrative Expenses [Member]
Defined benefit plans, amounts reclassified from accumulated other comprehensive income (loss)	$ (0.1)	$ (0.2)

The total of Other Comprehensive Income (Loss) arising during the period, net of tax.

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Represents the total of reclassification adjustments out of Accumulated Other Comprehensive Income (Loss) into net income (loss) during the period, before tax.

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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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 and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and 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 and reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount of tax (expense) benefit, before reclassification adjustments, related to (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement benefit plans.

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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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Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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