GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Beginning Balance	$ 2,418,832us-gaap_Goodwill	$ 2,231,582us-gaap_Goodwill
Goodwill acquired during year	39,249us-gaap_GoodwillAcquiredDuringPeriod	258,017us-gaap_GoodwillAcquiredDuringPeriod
Purchase accounting allocation adjustments	1,941	(22,420)
Goodwill other changes	(440)us-gaap_GoodwillOtherChanges
Changes due to foreign currency fluctuations	(40,298)	(48,347)
Ending Balance	2,419,284us-gaap_Goodwill	2,418,832us-gaap_Goodwill
United States
Goodwill [Roll Forward]
Beginning Balance	1,834,315	1,671,723
Goodwill acquired during year	10,260	169,754
Purchase accounting allocation adjustments	1,941	(4,825)
Goodwill other changes	0
Changes due to foreign currency fluctuations	(2,631)	(2,337)
Ending Balance	1,843,885	1,834,315
International
Goodwill [Roll Forward]
Beginning Balance	584,517	559,859
Goodwill acquired during year	28,989	88,263
Purchase accounting allocation adjustments	0	(17,595)
Goodwill other changes	(440)
Changes due to foreign currency fluctuations	(37,667)	(46,010)
Ending Balance	$ 575,399	$ 584,517

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of other (increase) decrease of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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