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GOODWILL AND RADIO BROADCASTING LICENSES: (Tables)
 9 Months Ended
Sep. 30, 2013
Goodwill and Radio Broadcasting Licenses [Abstract]  
Schedule Of Radio Broadcasting Licenses Impairment [Table Text Block]
Below are some of the key assumptions used in the income approach model for estimating broadcasting licenses fair values for all annual impairment assessments and interim impairment assessments where impairment was identified, since January 2012. 
 
 
 
June 30,
 
 
October 1,
 
 
March 31,
 
 
June 30,
 
 
September 30,
 
Radio Broadcasting Licenses
 
2012 (a)
 
 
2012
 
 
2013 (a)
 
 
2013 (a)
 
 
2013 (a)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pre-tax impairment charge (in millions)
 
$
0.3
 
 
$
—
 
 
$
1.4
 
 
$
9.8
 
 
$
3.7
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount Rate
 
 
10.0
%
 
 
10.0
%
 
 
10.0
%
 
 
10.5
%
 
 
10.5
%
Year 1 Market Revenue Growth Rate Range
 
 
1.0% -3.0
%
 
 
1.0% -2.0
%
 
 
1.0
%
 
 
2.0
%
 
 
(0.5%) – 2.0
%
Long-term Market Revenue Growth Rate Range (Years 6 – 10)
 
 
1.0% - 2.0
%
 
 
1.0% -2.0
%
 
 
1.5
%
 
 
1.5% -2.0
%
 
 
1.0% -2.0
%
Mature Market Share Range
 
 
5.8% - 15.6
%
 
 
0.7% - 27.4
%
 
 
8.6
%
 
 
8.6% - 15.1
%
 
 
6.7% - 27.4
%
Operating Profit Margin Range
 
 
29.1% - 48.0
%
 
 
19.6% - 47.7
%
 
 
31.4
%
 
 
32.6% - 34.4
%
 
 
30.3% - 40.1
%
 
(a)
Reflects only key assumptions used in the interim testing for certain units of accounting.