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Acquisitions, Divestures and Exchanges 2 (Details) (USD $)	12 Months Ended				8 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Spectrum exchange	Dec. 31, 2011 Assets held for sale
Business acquisition, additional information
Revenue	$ 4,343,346,000	$ 4,177,681,000	$ 4,213,880,000		$ 20,700,000
Operating income	280,780,000	201,473,000	325,525,000		14,800,000
Assets held for sale	49,647,000
Liabilities held for sale	1,051,000
Assets held for sale - Current assets	4,200,000
Assets held for sale - Investments	36,500,000
Assets held for sale - Property, plant and equipment	8,900,000
Nonmonetary transactions
Gain on asset exchange				$ 11,800,000
Asset exchange, valuation method				difference between the fair value of the licenses received, calculated using a market approach valuation method, and the carrying value of the licenses surrendered
Agreement date				9/30/2011

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Represents the sum of the carrying value of all the Assets Held-for-Sale at the balance sheet date.

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Liability (such as a mortgage) related to a disposal group that is held for sale and anticipated to be sold in less than one year. The liability is expected to be discharged as part of the plan of sale for the asset.

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