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Acquisitions, Divestitures and Exchanges, divestitures, exchanges and other information (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Business acquisition, additional information
Assets held for sale		$ 49,647,000
Liabilities held for sale		1,051,000
Divestitures
Cash received from divestitures	50,036,000
U.S. Cellular \| Wireless Market
Divestitures
Divestiture date	March 2012
Cash received from divestitures	49,800,000
Gain on divestiture	$ 4,200,000

The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement.

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- Definition

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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