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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Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

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Financial Instruments Measured At Fair Value, on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified									6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Fair Value, Recurring	Jun. 30, 2014 Level 1 Fair Value, Recurring	Jun. 30, 2014 Level 2 Fair Value, Recurring	Jun. 30, 2014 Fair Value, Inputs, Level 3 [Member] Fair Value, Recurring	Jun. 30, 2014 eScan	Apr. 09, 2014 Swap	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Debt Maturities, Date									Dec. 17, 2027	Jan. 17, 2033
Maximum payout for contingent obligation							$ 17.0
Accumulated other comprehensive loss	(78.9)	(73.2)						1.0
Financial instruments measured at fair value, on a recurring basis
Trading securities			10.9	10.9	0
Available-for-sale Securities, Noncurrent			3.0	3.0	0
Assets, Fair Value Disclosure			13.9	13.9	0	0
Derivative Liability, Fair Value, Gross Liability			(2.4)	0	(2.4)	0		(1.6)
Business Combination, Contingent Consideration, Liability			(2.2)	0	0	(2.2)
Financial and Nonfinancial Liabilities, Fair Value Disclosure			$ (4.6)	$ 0	$ (2.4)	$ (2.2)