LEASES - Narrative (Details) $ in Millions		3 Months Ended
Jan. 01, 2019 USD ($)	Mar. 31, 2020 option
Options to extend \| option		1
Renewal term		15 years
Cumulative effect adjustment	$ 4.7
Net of taxes	$ 1.7
Minimum
Remaining lease term		1 year
Maximum
Remaining lease term		30 years

Lessee, Operating Lease, Options to Extend

No definition available.

Name:	etm_LesseeOperatingLeaseOptionsToExtend
Namespace Prefix:	etm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of tax on sales of lease buyback transactions.

+ References

No definition available.

+ Details

Name:	etm_TaxOnGainOfSalesLeaseBuybackTransaction
Namespace Prefix:	etm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Cumulative amount of gain recognized (out of deferred gain) as income or a reduction in rent expense.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 35
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=108788860&loc=d3e50609-112754

+ Details

Name:	us-gaap_SaleLeasebackTransactionCumulativeGainRecognized1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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