Goodwill and Other Intangible Assets (Details) (USD $)	1 Months Ended	3 Months Ended
	Apr. 30, 2012 stations	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		$ 1,747,000,000		$ 1,745,000,000
Accumulated amortization		(1,156,000,000)		(1,126,000,000)
Finite-lived intangible assets, net		591,000,000		619,000,000
Indefinite-Lived Intangible Assets by Major Class [Line Items]
Total intangible assets, net		6,555,000,000		6,526,000,000
Total intangible assets, gross		7,711,000,000		7,652,000,000
Amortization expense [Abstract]
Amortization expense		27,000,000	31,000,000
Aggregate annual amortization expense for existing intangible assets subject to amortization for each of the following years [Abstract]
2012		102,000,000
2013		89,000,000
2014		79,000,000
2015		69,000,000
2016		61,000,000
Number of radio stations sold	5
Stations sale, price	50,000,000
Impairment charges		11,000,000	0
FCC licenses [Member]
Indefinite-Lived Intangible Assets by Major Class [Line Items]
Indefinite-lived intangible assets		5,795,000,000		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
Leasehold agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		895,000,000		882,000,000
Accumulated amortization		(612,000,000)		(590,000,000)
Finite-lived intangible assets, net		283,000,000		292,000,000
Franchise agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		489,000,000		487,000,000
Accumulated amortization		(301,000,000)		(292,000,000)
Finite-lived intangible assets, net		188,000,000		195,000,000
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		363,000,000		376,000,000
Accumulated amortization		(243,000,000)		(244,000,000)
Finite-lived intangible assets, net		$ 120,000,000		$ 132,000,000