Income Taxes (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011 years gHZ mHZ market site	Jun. 30, 2010	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Valuation Allowance, Deferred Tax Asset, Change in Amount			$ 533,000,000
Valuation allowance	3,100,000,000		3,100,000,000		2,600,000,000
Deferred Tax Assets, Equity Method Investments	340,000,000		340,000,000
Income tax expense	99,000,000	47,000,000	136,000,000	118,000,000
Income tax reconciliation state and local law changes			52,000,000
FCC License Amortization Period for Tax Purposes In Years			15
Cumulative effect of changes in corporate state income tax laws that was recognized within State income taxes, net of federal income tax effect			33,000,000
Cumulative effect of changes in corporate state income tax laws that was recognized as change in valuation allowance			19,000,000
Unrecognized tax benefit	225,000,000		225,000,000		228,000,000
Income Taxes Paid			$ (31,000,000)	$ (21,000,000)