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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 and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax, before reclassification adjustments of other comprehensive income (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, before reclassification adjustments, of (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 for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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Accumulated Other Comprehensive Income Activity (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (58.6)
OCI excluding reclassifications	(120.4)
Reclassifications to earnings	(1.7)
OCI, net of tax	(122.1)	(5.2)	3.3
Ending Balance	(180.7)	(58.6)
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(13.6)
OCI excluding reclassifications	(125.9)
Reclassifications to earnings	0
OCI, net of tax	(125.9)
Ending Balance	(139.5)
Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1.0
OCI excluding reclassifications	16.6
Reclassifications to earnings	(4.2)
OCI, net of tax	12.4
Ending Balance	13.4
Accrued Benefit Cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(46.3)
OCI excluding reclassifications	(10.8)
Reclassifications to earnings	2.5
OCI, net of tax	(8.3)
Ending Balance	(54.6)
Unrealized Gain On Investment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	0.3
OCI excluding reclassifications	(0.3)
Reclassifications to earnings	0
OCI, net of tax	$ (0.3)