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No definition available.

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The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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REVENUES - Revenue By Segment and Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									$ 4,993,660	$ 4,861,124	$ 4,887,842
Revenue from leases									1,332,120	1,307,307	1,363,158
Revenue	$ 1,772,525	$ 1,582,765	$ 1,600,842	$ 1,369,648	$ 1,713,161	$ 1,536,757	$ 1,589,637	$ 1,328,876	6,325,780	6,168,431	6,251,000
United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									4,043,761	3,984,914	3,963,744
Revenue									4,800,000	4,700,000	4,700,000
Other Americas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									60,295	72,033	69,783
Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									866,432	781,761	724,848
Asia-Pacific and other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									23,172	22,416	129,467
Operating Segments \| iHM
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									3,434,161	3,438,661	3,398,936
Revenue from leases									2,794	4,302	4,104
Revenue									3,436,955	3,442,963	3,403,040
Operating Segments \| iHM \| United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									3,408,563	3,413,716	3,374,866
Operating Segments \| iHM \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									4,416	3,368	3,279
Operating Segments \| iHM \| Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									9,953	9,705	9,417
Operating Segments \| iHM \| Asia-Pacific and other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									11,229	11,872	11,374
Operating Segments \| Americas Outdoor Advertising
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									465,307	440,980	438,411
Revenue from leases									724,041	720,079	748,769
Revenue									1,189,348	1,161,059	1,187,180
Operating Segments \| Americas Outdoor Advertising \| United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									462,614	429,475	418,378
Operating Segments \| Americas Outdoor Advertising \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									2,693	10,927	19,191
Operating Segments \| Americas Outdoor Advertising \| Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									0	0	0
Operating Segments \| Americas Outdoor Advertising \| Asia-Pacific and other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									0	578	842
Operating Segments \| International
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									921,608	839,760	879,995
Revenue from leases									610,749	587,883	612,647
Revenue									1,532,357	1,427,643	1,492,642
Operating Segments \| International \| United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									0	0	0
Operating Segments \| International \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									53,186	57,738	47,313
Operating Segments \| International \| Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									856,479	772,056	715,431
Operating Segments \| International \| Asia-Pacific and other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									11,943	9,966	117,251
Operating Segments \| Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									174,435	143,684	171,593
Revenue from leases									0	0	0
Revenue									174,435	143,684	171,593
Operating Segments \| Other \| United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									174,435	143,684	171,593
Operating Segments \| Other \| Other Americas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									0	0	0
Operating Segments \| Other \| Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									0	0	0
Operating Segments \| Other \| Asia-Pacific and other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									0	0	0
Eliminations
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									(1,851)	(1,961)	(1,093)
Revenue from leases									(5,464)	(4,957)	(2,362)
Revenue									(7,315)	(6,918)	(3,455)
Eliminations \| United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer									$ (1,851)	$ (1,961)	$ (1,093)