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PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Annual Impairment Test to Indefinite-lived Intangible Assets (Narrative) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2016 USD ($) market | Dec. 31, 2015 USD ($) market | Dec. 31, 2014 USD ($) market
Property, Plant and Equipment [Abstract] |  |  |
Period over which the Company forecasts revenue, expenses, and cash flows | 10 years |  |
FCC licenses |  |  |
Regulatory Assets [Line Items] |  |  |
Impairment charge | $ | $ 0.7 |  | $ 15.7
Number of markets | market | 1 |  | 11
Billboard permits |  |  |
Regulatory Assets [Line Items] |  |  |
Impairment charge | $ |  | $ 21.6 |
Number of markets | market |  | 1 |

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- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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