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

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The discounted value of the liability related to the non-contingent future cash payments for the business combination.

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

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

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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.

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

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Face (par) amount of debt instrument at time of issuance.

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

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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

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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.

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Amount, after accumulated amortization, of debt discount.

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Amount, before accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The effective portion of losses on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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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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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Financial Instruments - Additional Information (Detail)		1 Months Ended	9 Months Ended
Financial Instruments - Additional Information (Detail)	May 09, 2016 USD ($)	May 31, 2016 USD ($)	Sep. 30, 2016 USD ($) Country	Sep. 30, 2015 USD ($)	Jan. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Derivative [Line Items]
Debt instrument, net proceeds from offering			$ 495,600,000	$ 0
3.000% senior unsecured notes due 2026
Derivative [Line Items]
Fixed-rate notes interest percentage	3.00%
Debt instrument, maturity year	2026
Debt instrument, aggregate principal amount	$ 500,000,000
Debt instrument, interest payment description			Semi-annually
Debt instrument, net proceeds from offering	495,600,000
Debt instrument, debt offering costs	4,300,000
Debt instrument, debt issuance discount	$ 100,000
Five Year Credit Facility Expiring In November 2020
Derivative [Line Items]
Line of credit facility, borrowing capacity			$ 1,000,000,000
Line of credit facility, expiration date			2020-11
Line of credit facility, term, in years			5 years
Commercial Paper
Derivative [Line Items]
Commercial paper borrowings outstanding			$ 0			$ 0
National Healthcare Systems and Private Sector Customers \| Spain, Italy, Greece, and Portugal
Derivative [Line Items]
Accounts receivable, net			45,900,000
Accounts receivable greater than 365 days past due			$ 4,200,000
The number of countries in Europe in which certain collection risks exist \| Country			4
Medicon Inc \| Other Long-term Liabilities
Derivative [Line Items]
Liability for non-continent future payments for business combinations			$ 60,300,000			50,300,000
Fair Value, Inputs, Level 3 \| Fair Value, Measurements, Recurring
Derivative [Line Items]
Fair value of contingent consideration			19,700,000			11,200,000
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			1,748,700,000			1,449,800,000
Fair Value, Inputs, Level 2 \| Medicon Inc
Derivative [Line Items]
Liability for non-continent future payments for business combinations			79,100,000			66,000,000
Interest rate swap contract
Derivative [Line Items]
Notional value of derivative contracts					$ 250,000,000
Fixed-rate notes interest percentage					2.875%
Foreign Exchange Contract
Derivative [Line Items]
Notional value of derivative contracts			$ 321,400,000			$ 191,600,000
Forward Starting Interest Rate Swaps
Derivative [Line Items]
Notional value of derivative contracts		$ 250,000,000
Derivative instruments, loss recorded in accumulated other comprehensive loss		$ 23,300,000
Forward Starting Interest Rate Swaps \| 3.000% senior unsecured notes due 2026
Derivative [Line Items]
Fixed-rate notes interest percentage	3.00%
Debt instrument, maturity year	2026