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Member's Interest (Schedule Of Assumptions Used In Fair Value Calculation) (Detail) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
iHM [Member] | Minimum [Member] |  |  |
Member's Interest [Abstract] |  |  |
Expected volatility, minimum |  |  | 71.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Expected life in years, maximum |  |  | 6 years 4 months
Risk-free interest rate, minimum |  |  | 0.97%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Dividend yield |  |  | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RangeAxis = us-gaap_MinimumMember
iHM [Member] | Maximum [Member] |  |  |
Member's Interest [Abstract] |  |  |
Expected volatility, maximum |  |  | 77.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Expected life in years, maximum |  |  | 6 years 6 months
Risk-free interest rate, maximum |  |  | 1.55%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Dividend yield |  | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RangeAxis = us-gaap_MaximumMember
CCOH [Member] | Minimum [Member] |  |  |
Member's Interest [Abstract] |  |  |
Expected volatility, minimum | 54.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 55.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 54.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Expected life in years, maximum | 6 years 4 months | 6 years 4 months | 6 years 4 months
Risk-free interest rate, minimum | 1.73%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 1.05%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 0.92%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Dividend yield | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MinimumMember
CCOH [Member] | Maximum [Member] |  |  |
Member's Interest [Abstract] |  |  |
Expected volatility, maximum | 56.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 56.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 56.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Expected life in years, maximum | 6 years 4 months | 6 years 4 months | 6 years 4 months
Risk-free interest rate, maximum | 2.08%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 2.19%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 1.48%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Dividend yield | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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- Definition The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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