Financial Instruments - Additional Information (Detail) (USD $)	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Fair Value, Inputs, Level 3 \| Fair Value, Measurements, Recurring
Derivative [Line Items]
Fair value of contingent consideration	$ 8,900,000	$ 23,100,000
Fair Value, Inputs, Level 2
Derivative [Line Items]
Fair value of long-term debt including current maturities and the effects of the related interest rate swap contract	1,501,400,000	1,481,700,000
National Healthcare Systems In Spain Italy Greece and Portugal
Derivative [Line Items]
Accounts receivable, net	33,400,000
Accounts receivable greater than 365 days past due	8,500,000
The number of countries in Europe in which certain collection risks exist	4
Five Year Credit Facility Expiring In November 2019
Derivative [Line Items]
Line of credit facility, borrowing capacity	750,000,000
Line of credit facility, expiration date	2019-11
Line of credit facility, term, in years	5 years
Commercial Paper
Derivative [Line Items]
Commercial paper borrowings outstanding	231,000,000	78,000,000
Foreign Exchange Contract
Derivative [Line Items]
Notional value of derivative contracts	194,600,000	191,100,000
Interest rate swap contract
Derivative [Line Items]
Notional value of derivative contracts	250,000,000
Fixed-rate notes due date	2016
Fixed-rate notes interest percentage	2.875%
Forward Starting Interest Rate Swaps
Derivative [Line Items]
Notional value of derivative contracts	$ 250,000,000
Derivative termination date	2016-05

Accounts receivable, net of allowances, greater than three hundred and sixty five days past due, country specific risk.

No definition available.

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- Definition

Derivative Instrument Expiry Date

+ References

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- Definition

Fixed rates notes maturity year.

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- Definition

Line Of Credit Facility Maturity Month and Year

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No definition available.

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- Definition

The number of countries in Europe in which certain collection risks exist.

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No definition available.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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-Number 210

-Section 02

-Paragraph 3

-Article 5

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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-Topic 805

-SubTopic 30

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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