XML 65 R52.htm IDEA: XBRL DOCUMENT
v3.8.0.1

INVESTMENTS - Narrative (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) investment company | Dec. 31, 2016 USD ($) investment company | Dec. 31, 2015 USD ($)
Schedule of Investments [Line Items] |  |  |
Investments made in private equity companies in exchange for advertising services | $ 35,523 | $ 34,534 |
Number of investments made in private companies | company | 13 | 4 |
Number of investments accounted for under equity method of accounting | investment | 2 | 2 |
Number of investments accounted for under cost method | investment | 6 | 2 |
Number of investments accounted for as notes receivable convertible into equity | investment | 5 |  |
Barter revenue recognized | $ 243,300 | $ 165,800 | $ 133,500
Non-cash impairment on cost investment |  | 14,500 |
Non-cash impairment on equity investment |  | 15,000 |
Marketable equity securities held | 1,500 | 1,700 |
Twelve private companies |  |  |
Schedule of Investments [Line Items] |  |  |
Barter revenue recognized | 35,200 | 36,600 |
iHM | Twelve private companies |  |  |
Schedule of Investments [Line Items] |  |  |
Investments made in private equity companies in exchange for advertising services | $ 34,700 |  |
iHM | Four private companies |  |  |
Schedule of Investments [Line Items] |  |  |
Investments made in private equity companies in exchange for advertising services |  | $ 26,100 |

X
- Definition Number Of Investments Accounted For As Notes Receivable Convertible Into Equity + References No definition available. + Details
Name: | ihrt_NumberOfInvestmentsAccountedForAsNotesReceivableConvertibleIntoEquity
Namespace Prefix: | ihrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Investments Accounted For Under Cost Method + References No definition available. + Details
Name: | ihrt_NumberOfInvestmentsAccountedForUnderCostMethod
Namespace Prefix: | ihrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Investments Accounted For Under Equity Method + References No definition available. + Details
Name: | ihrt_NumberOfInvestmentsAccountedForUnderEquityMethod
Namespace Prefix: | ihrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Investments Made In Private Companies In Exchange For Advertising Services + References No definition available. + Details
Name: | ihrt_NumberOfInvestmentsMadeInPrivateCompaniesInExchangeForAdvertisingServices
Namespace Prefix: | ihrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total revenue recognized from advertising barter transactions for each income statement presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68051663&loc=d3e49171-111630 + Details
Name: | us-gaap_AdvertisingBarterTransactionsAdvertisingBarterRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596 + Details
Name: | us-gaap_CostmethodInvestmentsOtherThanTemporaryImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=64825282&loc=d3e32787-111569 + Details
Name: | us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition For an unclassified balance sheet, this item represents investments in common and preferred stocks and other forms of securities that provide ownership interests in a corporation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(b)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_MarketableSecuritiesEquitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ihrt_TwelvePrivateCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ihrt_IHeartMediaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ihrt_FourPrivateCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |