Condensed Consolidated Statements of Comprehensive Income or Loss (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 71.5us-gaap_NetIncomeLoss	$ 17.4us-gaap_NetIncomeLoss
Foreign currency translation:
Net unrealized loss arising during the period	(166.0)	(6.1)
Derivative instruments:
Net unrealized gain (loss) arising during the period	0.1	(0.6)
Reclassification of net loss into earnings	0	0.2
Defined benefit plans:
Reclassification of net loss into earnings	0.7	0.3
Other comprehensive loss	(165.2)	(6.2)
Comprehensive (loss) income	$ (93.7)us-gaap_ComprehensiveIncomeNetOfTax	$ 11.2us-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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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 other comprehensive income (loss) attributable to parent entity.

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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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