FAIR VALUE MEASUREMENTS - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	$ 1,057,000us-gaap_DerivativeAssets	$ 1,057,000us-gaap_DerivativeAssets		$ 515,000us-gaap_DerivativeAssets
Cash received on settled hedge	8,800,000	8,833,000	0
Settlement of hedge, amount recognized in accumulated other comprehensive income	5,300,000	(4,424,000)	0
Settlement of hedge, tax amount recognized in accumulated other comprehensive income	3,500,000	2,381,000	0
Contingent consideration liabilities	28,423,000	28,423,000		19,941,000
Debt obligations, carrying amount	1,575,389,000us-gaap_DebtAndCapitalLeaseObligations	1,575,389,000us-gaap_DebtAndCapitalLeaseObligations		1,659,215,000us-gaap_DebtAndCapitalLeaseObligations
Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Maximum contingent liability if financial performance measures were fully met	29,600,000	29,600,000
Level 3 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	0	0
Contingent consideration liabilities	28,423,000	28,423,000		19,941,000
Level 3 Inputs [Member] \| Current Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration liabilities	17,200,000	17,200,000
Level 2 Inputs [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	1,057,000	1,057,000		515,000
Contingent consideration liabilities	0	0		0
Debt obligations, fair value	$ 1,610,000,000	$ 1,610,000,000		$ 1,670,000,000

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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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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Amount of tax expense (benefit), before reclassification adjustments, related to 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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The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

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