GOODWILL AND RADIO BROADCASTING LICENSES (Details 1) - Radio Market Reporting Units [Member] - USD ($) $ in Millions		Jun. 30, 2018	Jun. 30, 2017
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Pre-tax impairment charge	[1]	$ 0	$ 0
Discount Rate	[1]	9.00%	9.00%
Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Year 1 Market Revenue Growth Rate Range	[1]	(8.60%)	(5.60%)
Long-term Market Revenue Growth Rate Range (Years 6 – 10)	[1]	0.50%	1.00%
Mature Market Share Range	[1]	7.60%	9.10%
Operating Profit Margin Range	[1]	23.70%	33.20%
Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Year 1 Market Revenue Growth Rate Range	[1]	19.50%	9.20%
Long-term Market Revenue Growth Rate Range (Years 6 – 10)	[1]	1.00%	1.50%
Mature Market Share Range	[1]	14.90%	10.40%
Operating Profit Margin Range	[1]	31.80%	53.20%

[1] Reflects changes only to the key assumptions used in the interim testing for certain units of accounting.