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PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Schedule Of Changes In Carrying Amount Of Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Goodwill
Beginning balance	$ 4,118,756	$ 4,051,082
Acquisitions	2,767	77,320
Dispositions		(1,606)
Foreign currency	(3,211)	(8,040)
Ending balance	4,118,312	4,118,756
iHM
Goodwill
Beginning balance	3,330,922	3,255,208
Acquisitions	2,767	77,320
Dispositions		(1,606)
Foreign currency	(27)	0
Ending balance	3,333,662	3,330,922
Americas Outdoor
Goodwill
Beginning balance	507,819	507,819
Acquisitions	0	0
Dispositions		0
Foreign currency	0	0
Ending balance	507,819	507,819
International Outdoor
Goodwill
Beginning balance	198,184	206,224
Acquisitions	0	0
Dispositions		0
Foreign currency	(3,184)	(8,040)
Ending balance	195,000	198,184
Other
Goodwill
Beginning balance	81,831	81,831
Acquisitions	0	0
Dispositions		0
Foreign currency	0	0
Ending balance	$ 81,831	$ 81,831

X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of divestiture 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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