FAIR VALUE MEASUREMENTS - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative asset	$ 954	$ 1,207
Contingent consideration liabilities	22,967	25,390
Debt obligations, carrying amount	3,152,149	3,214,048
Maximum
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Maximum contingent liability if financial performance measures were fully met	40,200
Level 3 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative asset	0	0
Contingent consideration liabilities	22,967	25,390
Level 3 Inputs [Member] \| Current Liabilities [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Contingent consideration liabilities	6,900
Level 2 Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative asset	954	1,207
Contingent consideration liabilities	0	0
Debt obligations, fair value	$ 3,130,000	$ 3,220,000

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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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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