Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Intangible Assets Details [Abstract]
Impairment charges	$ 0	$ 0	$ 0	$ 11,000,000
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	1,825,000,000		1,825,000,000		1,824,000,000
Accumulated amortization	(1,177,000,000)		(1,177,000,000)		(1,141,000,000)
Finite-lived intangible assets, net	648,000,000		648,000,000		683,000,000
Indefinite-Lived Intangible Assets by Major Class [Line Items]
Total intangible assets, net	6,480,000,000		6,480,000,000		6,515,000,000
Total intangible assets, gross	7,657,000,000		7,657,000,000		7,656,000,000
Amortization expense [Abstract]
Amortization expense	24,000,000	28,000,000	50,000,000	55,000,000
Aggregate annual amortization expense for existing intangible assets subject to amortization for each of the following years [Abstract]
2013	100,000,000		100,000,000
2014	89,000,000		89,000,000
2015	79,000,000		79,000,000
2016	69,000,000		69,000,000
2017	43,000,000		43,000,000
FCC licenses [Member]
Indefinite-Lived Intangible Assets by Major Class [Line Items]
Indefinite-lived intangible assets	5,832,000,000		5,832,000,000		5,832,000,000
Permits and leasehold agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	894,000,000		894,000,000		889,000,000
Accumulated amortization	(653,000,000)		(653,000,000)		(635,000,000)
Finite-lived intangible assets, net	241,000,000		241,000,000		254,000,000
Franchise agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	477,000,000		477,000,000		477,000,000
Accumulated amortization	(321,000,000)		(321,000,000)		(309,000,000)
Finite-lived intangible assets, net	156,000,000		156,000,000		168,000,000
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	222,000,000		222,000,000		213,000,000
Accumulated amortization	(35,000,000)		(35,000,000)		(28,000,000)
Finite-lived intangible assets, net	187,000,000		187,000,000		185,000,000
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	232,000,000		232,000,000		245,000,000
Accumulated amortization	(168,000,000)		(168,000,000)		(169,000,000)
Finite-lived intangible assets, net	$ 64,000,000		$ 64,000,000		$ 76,000,000