2.2.0.25truefalse40302 - Disclosure - Wireless Licenses, Goodwill and Other Intangible Assets (Changes in the Carrying Amount of Wireless Licenses) (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse3/31/2011
USD ($)
USD ($) / shares
$As_Of_3_31_2011http://www.sec.gov/CIK0000732712instant2011-03-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse12/31/2010
USD ($)
USD ($) / shares
$As_Of_12_31_2010http://www.sec.gov/CIK0000732712instant2010-12-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDtruefalse{us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis} : Wireless Licenses [Member]
1/1/2011 - 3/31/2011
USD ($)
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-Paragraph 45
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-Name Accounting Standards Codification
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falsefalse5false0us-gaap_IndefiniteLivedLicenseAgreementsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse7304900000073049falsetruefalsefalsefalse2truefalsefalse7299600000072996falsetruefalsefalsefalse3truefalsefalse7304900000073049falsetruefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the capitalized costs to acquire rights under a license arrangement (for example, to sell specified products in a specified territory) having an indefinite period of benefit.Reference 1: http://www.xbrl.org/2003/role/presentationRef
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