Broadcast Licenses and Other Intangibles Assets (Details 1)	12 Months Ended	3 Months Ended
Dec. 31, 2012	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2011 Maximum [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2011 Minimum [Member]
Impairment Test Key Estimates and Assumptions [Line Items]
Discount rates		12.20%	12.20%	12.00%	11.90%
Operating profit margin ranges		35.80%	35.80%	17.40%	17.40%
Market long-term revenue growth rates		3.10%	3.00%	1.75%	2.00%
Fair Value Inputs Long Term Revenue Growth Rate Increase From Estimate	46.00%

Percentage increase from the percent assumed as long-term growth in revenues.

No definition available.

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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- Definition

Long-term pre-tax operating income as a percentage of net sales, used as an input to measure fair value.

+ References

+ Details

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- Definition

Percentage of assumed long-term growth in revenues, used as an input to measure fair value.

+ References

+ Details

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