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Acquisitions, Divestitures and Exchanges - Assets Held for Sale & Exchanges (Details) (USD $) | 3 Months Ended | 9 Months Ended | 4 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 Assets held for sale | Sep. 30, 2011 Spectrum exchange | Sep. 30, 2011 Spectrum exchange
Business combination achieved in stages |  |  |  |  |  |  |
Revenue | $ 1,110,439,000 | $ 1,060,781,000 | $ 3,243,713,000 | $ 3,114,531,000 | $ 13,200,000 |  |
Operating income | 101,620,000 | 61,359,000 | 264,464,000 | 205,535,000 | 9,600,000 |  |
Assets held for sale | 60,829,000 |  | 60,829,000 |  |  |  |
Liabilities held for sale | 858,000 |  | 858,000 |  |  |  |
Assets held for sale - Current assets |  |  |  |  | 15,900,000 |  |
Assets held for sale - Investments |  |  |  |  | 36,500,000 |  |
Assets held for sale - Property, plant and equipment |  |  |  |  | 8,400,000 |  |
Nonmonetary transactions |  |  |  |  |  |  |
Gain on asset exchange |  |  |  |  |  | $ 11,800,000 | $ 11,800,000
Asset exchange, valuation method |  |  |  |  |  |  | difference between the fair value, calculated using a market approach valuation method, and the carrying value of the licenses surrendered

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- Definition Represents the sum of the carrying value of all the Assets Held-for-Sale at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Current assets (normally turning over within one year or one business cycle if longer) that are held for sale apart from normal operations and anticipated to be sold within one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
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- Definition Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
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