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GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS: (Details 5) (Cable Television Segment Goodwill [Member], USD $)	Oct. 01, 2014	Oct. 01, 2013	Oct. 01, 2012
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Impairment charge (in millions)	$ 0roia_PreTaxImpairmentCharges	$ 0roia_PreTaxImpairmentCharges	$ 0roia_PreTaxImpairmentCharges
Discount Rate	10.40%roia_DiscountRate	10.80%roia_DiscountRate	10.80%roia_DiscountRate
Year 1 Revenue Growth Rate	11.50%roia_Year1MarketRevenueGrowthRange	12.10%roia_Year1MarketRevenueGrowthRange	11.20%roia_Year1MarketRevenueGrowthRange
Maximum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Long-term Revenue Growth Rate Range	7.70%	12.10%	12.20%
Operating Profit Margin Range	36.10%	35.70%	36.20%
Minimum [Member]
Schedule of GOODWILL, RADIO BROADCASTING LICENSES AND OTHER INTANGIBLE ASSETS [Line Items]
Long-term Revenue Growth Rate Range	0.30%	1.10%	2.50%
Operating Profit Margin Range	29.80%	30.60%	33.30%