SEGMENT DATA (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 1,369,961	$ 1,329,322
Direct operating expenses	601,268	571,262
Selling, general and administrative expenses	472,987	450,619
Corporate expenses	78,734	78,362
Depreciation and amortization	151,434	146,106
Other operating income, net	(3,286)	31,084
Operating income	62,252	114,057
Capital expenditures	38,703	51,027
Share-based compensation expense	2,684	3,059
Operating segments \| iHM
Segment Reporting Information [Line Items]
Revenue	744,568	757,173
Direct operating expenses	241,066	243,331
Selling, general and administrative expenses	321,270	308,151
Corporate expenses	0	0
Depreciation and amortization	58,333	58,037
Other operating income, net	0	0
Operating income	123,899	147,654
Capital expenditures	9,077	13,237
Share-based compensation expense	0	0
Operating segments \| Americas Outdoor
Segment Reporting Information [Line Items]
Revenue	255,847	260,346
Direct operating expenses	124,873	130,651
Selling, general and administrative expenses	48,950	50,378
Corporate expenses	0	0
Depreciation and amortization	44,504	42,816
Other operating income, net	0	0
Operating income	37,520	36,501
Capital expenditures	12,907	13,588
Share-based compensation expense	0	0
Operating segments \| International Outdoor
Segment Reporting Information [Line Items]
Revenue	342,864	284,380
Direct operating expenses	235,329	197,280
Selling, general and administrative expenses	78,458	65,396
Corporate expenses	0	0
Depreciation and amortization	38,565	33,152
Other operating income, net	0	0
Operating income	(9,488)	(11,448)
Capital expenditures	15,272	22,340
Share-based compensation expense	0	0
Operating segments \| Other
Segment Reporting Information [Line Items]
Revenue	28,218	29,271
Direct operating expenses	0	0
Selling, general and administrative expenses	24,822	27,641
Corporate expenses	0	0
Depreciation and amortization	3,766	3,369
Other operating income, net	0	0
Operating income	(370)	(1,739)
Capital expenditures	40	63
Share-based compensation expense	0	0
Corporate and other reconciling items
Segment Reporting Information [Line Items]
Revenue	0	0
Direct operating expenses	0	0
Selling, general and administrative expenses	0	0
Corporate expenses	79,757	79,263
Depreciation and amortization	6,266	8,732
Other operating income, net	(3,286)	31,084
Operating income	(89,309)	(56,911)
Capital expenditures	1,407	1,799
Share-based compensation expense	2,684	3,059
Eliminations
Segment Reporting Information [Line Items]
Revenue	(1,536)	(1,848)
Direct operating expenses	0	0
Selling, general and administrative expenses	(513)	(947)
Corporate expenses	(1,023)	(901)
Depreciation and amortization	0	0
Other operating income, net	0	0
Operating income	0	0
Capital expenditures	0	0
Share-based compensation expense	0	0
Intersegment revenues
Segment Reporting Information [Line Items]
Revenue	1,536	1,848
Intersegment revenues \| iHM
Segment Reporting Information [Line Items]
Revenue	14	0
Intersegment revenues \| Americas Outdoor
Segment Reporting Information [Line Items]
Revenue	1,522	1,848
Intersegment revenues \| International Outdoor
Segment Reporting Information [Line Items]
Revenue	$ 0	$ 0

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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