Income Taxes (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance			$ 1,210,000,000	$ 654,000,000
Deferred Tax Assets, Valuation Allowance	5,100,000,000		5,100,000,000		3,900,000,000
Income tax expense	47,000,000	12,000,000	110,000,000	148,000,000
FCC License Amortization Period for Tax Purposes In Years			15 years
Income Tax Reconciliation, Tax Settlements			33,000,000
income tax reconciliation state and local law changes				52,000,000
Unrecognized tax benefit	211,000,000		211,000,000		225,000,000
Income Taxes Paid, Net			$ 26,000,000	$ 33,000,000

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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- Definition

The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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