v3.19.2

DERIVATIVES AND HEDGING ACTIVITIES - Derivatives Collar Schedule (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2019 USD ($)
Derivative Instrument and Hedging Activities [Line Items] |
Aggregate notional amounts outstanding | $ 560
Designated as Hedging Instrument [Member] |
Derivative Instrument and Hedging Activities [Line Items] |
Aggregate notional amounts outstanding | 560
Collar [Member] | Designated as Hedging Instrument [Member] |
Derivative Instrument and Hedging Activities [Line Items] |
Aggregate notional amounts expired | $ 560
Effective date | Jun. 25, 2019
Derivative Maturity Date | Jun. 24, 2028
Collar [Member] | Designated as Hedging Instrument [Member] | LIBOR [Member] |
Derivative Instrument and Hedging Activities [Line Items] |
Derivative, Cap Interest Rate | 2.75%
Derivative, Floor Interest Rate | 0.402%
Collar, Decrease Date June 29, 2020 [Member] | Designated as Hedging Instrument [Member] |
Derivative Instrument and Hedging Activities [Line Items] |
Aggregate notional amounts expired | $ 460
Collar, Decrease Date June 28, 2021 [Member] | Designated as Hedging Instrument [Member] |
Derivative Instrument and Hedging Activities [Line Items] |
Aggregate notional amounts expired | 340
Collar, Decrease Date June 28, 2022 [Member] | Designated as Hedging Instrument [Member] |
Derivative Instrument and Hedging Activities [Line Items] |
Aggregate notional amounts expired | 220
Collar, Decrease Date June 28, 2023 [Member] | Designated as Hedging Instrument [Member] |
Derivative Instrument and Hedging Activities [Line Items] |
Aggregate notional amounts expired | $ 90

X
- Definition Aggregate notional amount of all expired derivatives. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a expired derivative instrument. + References No definition available. + Details
Name: | etm_NotionalAmountOfExpiredDerivatives
Namespace Prefix: | etm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract. + References No definition available. + Details
Name: | us-gaap_DerivativeCapInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract. + References No definition available. + Details
Name: | us-gaap_DerivativeFloorInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Date the entity entered into the derivative contract, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeInceptionDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
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_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeMaturityDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=etm_CollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=etm_CollarDecreaseDateJune292020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=etm_CollarDecreaseDateJune282021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=etm_CollarDecreaseDateJune282022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=etm_CollarDecreaseDateJune282023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |