GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Segment Reporting_unit	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets by Major Class [Line Items]
Number of geographical reportable segments			2
Number of reporting units			3
Goodwill	$ 2,421,348		$ 2,421,348		$ 2,231,582	$ 2,065,103
Aggregate amortization expense	8,402	6,533	15,717	13,175
Customer relationships
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets, weighted average remaining useful life			24 years 2 months 12 days
Customer relationships | Minimum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			10 years
Customer relationships | Maximum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			40 years
Covenants not-to-compete
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets, weighted average remaining useful life			3 years 6 months
Covenants not-to-compete | Minimum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			3 years
Covenants not-to-compete | Maximum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			14 years
Tradenames
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets, weighted average remaining useful life			15 years 2 months 12 days
Tradenames | Minimum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			10 years
Tradenames | Maximum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			40 years
Technology
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets, weighted average remaining useful life			6 years 10 months 24 days
Technology | Minimum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			5 years
Technology | Maximum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life			7 years
Market Approach Goodwill Impairment Test [Member]
Intangible Assets by Major Class [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	100.00%		100.00%
Domestic Regulated and Compliance Services [Member] | Income Approach Goodwill Impairment Test [Member]
Intangible Assets by Major Class [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	100.00%		100.00%
Domestic Regulated Recall and Returns Management Services [Member] | Income Approach Goodwill Impairment Test [Member]
Intangible Assets by Major Class [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	100.00%		100.00%
International Regulated and Compliance Services [Member]
Intangible Assets by Major Class [Line Items]
Goodwill	$ 576,730		$ 576,730
International Regulated and Compliance Services [Member] | Income Approach Goodwill Impairment Test [Member]
Intangible Assets by Major Class [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	85.00%		85.00%