Broadcast Licenses, Goodwill and Other Intangible Assets (Details 1)	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rates	12.20%	12.30%	12.20%	12.00%
Operating profit margin ranges	19.50%	20.80%	19.90%	17.40%
Market long-term revenue growth rates	1.30%	1.20%	1.90%	1.75%
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rates	12.40%	12.40%	12.40%	12.20%
Operating profit margin ranges	36.40%	36.40%	35.80%	35.80%
Market long-term revenue growth rates	3.10%	4.10%	3.30%	3.10%