GOODWILL AND RADIO BROADCASTING LICENSES: (Details) (Income Approach Valuation Technique [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Oct. 01, 2012	Jun. 30, 2012
Pre-tax impairment charge (in millions)	$ 1.4	[1]	$ 0	$ 0.3	[1]
Discount Rate	10.00%	[1]	10.00%	10.00%	[1]
Year 1 Market Revenue Growth Rate Range	1.00%	[1]
Long-term Market Revenue Growth Rate Range (Years 6 - 10)	1.50%	[1]
Mature Market Share Range	8.60%	[1]
Operating Profit Margin Range	31.40%	[1]
Minimum [Member]
Year 1 Market Revenue Growth Rate Range			1.00%	1.00%	[1]
Long-term Market Revenue Growth Rate Range (Years 6 - 10)			1.00%	1.00%	[1]
Mature Market Share Range			0.70%	5.80%	[1]
Operating Profit Margin Range			19.60%	29.10%	[1]
Maximum [Member]
Year 1 Market Revenue Growth Rate Range			2.00%	3.00%	[1]
Long-term Market Revenue Growth Rate Range (Years 6 - 10)			2.00%	2.00%	[1]
Mature Market Share Range			27.40%	15.60%	[1]
Operating Profit Margin Range			47.70%	48.00%	[1]

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