GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS: (Details 4) (Internet Segment [Member], USD $) In Millions, unless otherwise specified	Oct. 01, 2012	Oct. 01, 2011	Oct. 01, 2010
Pre-tax impairment charge (in millions)	$ 0	$ 0	$ 0
Discount Rate	13.50%	14.50%	15.00%
Year 1 Revenue Growth Rate Range	13.80%	20.30%	24.50%
Long-term Revenue Growth Rate (Year 10)	2.50%	2.50%	3.00%
Minimum [Member]
Operating Profit Margin Range	(4.80%)	0.00%	(0.60%)
Maximum [Member]
Operating Profit Margin Range	24.20%	28.80%	32.70%