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Stock-Based Compensation, U.S. Cellular, Nonvested shares and other stock compensation disclosures (Details) (U.S. Cellular, U.S. Cellular Common Shares, USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
2005 and 2013 Long-Term Incentive Plans | Restricted Stock Units |  |  |
Stock based compensation, Nonvested shares rollforward, number of shares |  |  |
Nonvested stock units, begin of period - Number of shares | 1,170,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |  |
Granted number of shares | 370,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |  |
Vested number of shares | (274,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |  |
Forfeited number of shares | (124,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |  |
Nonvested stock units, end of period - Number of shares | 1,142,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | 1,170,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |
Stock based compensation, Nonvested shares weighted average grant date fair value |  |  |
Nonvested stock units - begin of period weighted average grant date fair value | $ 36.46 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |  |
Granted weighted average grant date fair value | $ 41.24 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | $ 32.06 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | $ 34.09 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember
Vested weighted average grant date fair value | $ 41.92 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |  |
Forfeited weighted average grant date fair value | $ 34.38 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |  |
Nonvested stock units - end of period weighted average grant date fair value | $ 35.60 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | $ 36.46 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember |
Fair value of vested stock units | $ 11.1 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | $ 8.8 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | $ 8.9 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember
2005 and 2013 Long-Term Incentive Plans | Deferred Compensation Stock Units |  |  |
Stock based compensation, Nonvested shares weighted average grant date fair value |  |  |
Granted weighted average grant date fair value |  | $ 31.5 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | $ 36.34 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember
Fair value of vested stock units |  | $ 0.1 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | $ 0.1 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_PlanNameAxis = tds_StockCompensationPlanDMember / tds_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardTypeAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember
Non-Employee Directors' Plan |  |  |
Shares issued and granted under stock compensation plans |  |  |
Shares issued | 14,200 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_PlanNameAxis = tds_NonEmployeeDirectorPlanMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | 13,000 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_PlanNameAxis = tds_NonEmployeeDirectorPlanMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember | 7,600 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_PlanNameAxis = tds_NonEmployeeDirectorPlanMember / us-gaap_StatementBusinessSegmentsAxis = tds_USCellularSegmentMember / us-gaap_StatementClassOfStockAxis = tds_USCellularCommonSharesMember

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References No definition available. + Details
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