Goodwill and Other Intangible Assets (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2012 stations	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		$ 1,672,000,000		$ 1,672,000,000		$ 1,745,000,000
Accumulated amortization		(1,129,000,000)		(1,129,000,000)		(1,126,000,000)
Finite-lived intangible assets, net		543,000,000		543,000,000		619,000,000
Indefinite-Lived Intangible Assets by Major Class [Line Items]
Total intangible assets, net		6,483,000,000		6,483,000,000		6,526,000,000
Total intangible assets, gross		7,612,000,000		7,612,000,000		7,652,000,000
Amortization expense [Abstract]
Amortization expense		25,000,000	31,000,000	80,000,000	94,000,000
Aggregate annual amortization expense for existing intangible assets subject to amortization for each of the following years [Abstract]
2012		104,000,000		104,000,000
2013		90,000,000		90,000,000
2014		80,000,000		80,000,000
2015		69,000,000		69,000,000
2016		59,000,000		59,000,000
Number of radio stations sold	5
Stations sale, price	50,000,000
Impairment charges		0	0	11,000,000	0
FCC licenses [Member]
Indefinite-Lived Intangible Assets by Major Class [Line Items]
Indefinite-lived intangible assets		5,771,000,000		5,771,000,000		5,738,000,000
Trade names [Member]
Indefinite-Lived Intangible Assets by Major Class [Line Items]
Indefinite-lived intangible assets		169,000,000		169,000,000		169,000,000
Leasehold agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		895,000,000		895,000,000		882,000,000
Accumulated amortization		(630,000,000)		(630,000,000)		(590,000,000)
Finite-lived intangible assets, net		265,000,000		265,000,000		292,000,000
Franchise agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		489,000,000		489,000,000		487,000,000
Accumulated amortization		(313,000,000)		(313,000,000)		(292,000,000)
Finite-lived intangible assets, net		176,000,000		176,000,000		195,000,000
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		288,000,000		288,000,000		376,000,000
Accumulated amortization		(186,000,000)		(186,000,000)		(244,000,000)
Finite-lived intangible assets, net		$ 102,000,000		$ 102,000,000		$ 132,000,000