TMUS


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ProductOrService
us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostsAndExpenses

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpenseDebt

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:BusinessAcquisition

us-gaap:Revenues

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent
us-gaap:ConsolidatedEntities, us-gaap:TransactionType
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
us-gaap:TransactionType
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:PropertyPlantAndEquipmentGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Goodwill
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessAcquisition
us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:CounterpartyName

us-gaap:OtherAssetsNoncurrent
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
us-gaap:TransactionType

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent
us-gaap:ConsolidatedEntities, us-gaap:TransactionType
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:LongTermDebtNoncurrent
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiability
us-gaap:CounterpartyName

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:DerivativeInstrumentRisk

us-gaap:TreasuryStockValue

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits
us-gaap:BusinessAcquisition

us-gaap:DeferredTaxAssetsValuationAllowance

tmus:AdjustmentToAdditionalPaidInCapitalPurchasePriceConsideration
us-gaap:StatementEquityComponents

tmus:AdjustmentsToAdditionalPaidInCapitalExecutivePutOption
us-gaap:StatementEquityComponents

tmus:AssetRetirementObligationLiabilitiesAssumedInBusinessCombination
us-gaap:BusinessAcquisition
tmus:BusinessAcquisitionProFormaIncomeLossFromDiscontinuedOperationsNetOfTax
us-gaap:BusinessAcquisition
tmus:BusinessCombinationPurchaseAgreementPrice
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
tmus:CashFlowsBetweenTransferorandTransfereenetcashproceedsduringtheperiod

tmus:ChangeInCapitalExpendituresIncurredButNotYetPaid
us-gaap:DebtInstrument
tmus:DebtInstrumentRedemptionPremium
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:DepreciationExpenseforLeasedWirelessDevices
us-gaap:RelatedPartyTransactionsByRelatedParty
tmus:DiscountRelatedtoRoamingExpenses

tmus:FinanceLeaseExpense

tmus:IncreaseDecreaseinOperatingLeaseLiability

tmus:IncreaseDecreaseinOperatingLeaseRightofUseAsset
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
tmus:IndefinitelivedIntangibleAssetsCoststoClearAssets
tmus:LicenseAuctionType, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
tmus:IntangibleAssetAggregatePurchasePrice
tmus:LicenseAuctionType, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
tmus:IntangibleAssetExpectedRemainingCost
us-gaap:RelatedPartyTransactionsByRelatedParty
tmus:InternationalLongDistanceAgreement
us-gaap:StatementEquityComponents
tmus:MasterFrameworkAgreementProceedsReceivedToFacilitateStockTransaction

tmus:NoncashOrPartNoncashAcquisitionConsideration
dei:LegalEntity, us-gaap:CounterpartyName, tmus:AssetAcquisition
tmus:PaymentsforAssetAcquisitions
dei:LegalEntity, us-gaap:CounterpartyName, tmus:AssetAcquisition, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

tmus:PriorYearRetainedEarnings
us-gaap:StatementEquityComponents
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation
tmus:ProceedsFromIssuanceAndOtherChangesInShortTermDebt

tmus:ProceedsFromSalesOfTowerSites

tmus:ReceivableWithImputedInterestDiscountIncreaseDecrease
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:DebtInstrument, us-gaap:ShortTermDebtType
tmus:ReimbursementOfCommitmentLetterFees
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ShortTermDebtType
us-gaap:RelatedPartyTransactionsByRelatedParty
tmus:RelatedPartyTransactionReimbursementofExpensesfromTransactionswithRelatedParty
us-gaap:CounterpartyName, us-gaap:DebtInstrument
tmus:RepaymentsOfDebtToThirdParties

tmus:RepaymentsOfShortTermDebtForPurchasesOfInventoryPropertyAndEquipmentNet
us-gaap:SaleLeasebackTransactionDescription
tmus:SaleLeasebackInterestRate

tmus:ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationGrantDateFairValue
us-gaap:PlanName
tmus:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice
us-gaap:StatementEquityComponents
tmus:StockIssuedDuringPeriodValueDistributionFromNDQCPlan
us-gaap:StatementEquityComponents
tmus:StockIssuedDuringPeriodValueTransferOfRSUsFromNQDCPlan
us-gaap:StatementEquityComponents
tmus:TransferRSUtoNQDCPlan
us-gaap:AwardType
tmus:UnrecognizedCompensationExpense
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty
tmus:WriteoffofPremiumsDiscountsandIssuanceCosts
us-gaap:DebtInstrument, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:AssetImpairmentCharges

us-gaap:AssetRetirementObligationAccretionExpense

us-gaap:AssetRetirementObligationLiabilitiesIncurred

us-gaap:AssetRetirementObligationLiabilitiesSettled
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

us-gaap:CapitalizedComputerSoftwareImpairments1

us-gaap:CapitalizedContractCostAmortization
us-gaap:IncomeStatementLocation
us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations

us-gaap:ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DebtInstrumentIncreaseDecreaseOtherNet
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

us-gaap:DebtInstrumentInterestRateDuringPeriod
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentPeriodicPaymentPrincipal
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentRedemptionPricePercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount

us-gaap:Depreciation
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DiscontinuedOperationTaxEffectOfDiscontinuedOperation
us-gaap:ProductOrService, us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationOperatingExpense
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationRevenue
us-gaap:ProductOrService, us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableSignificantSales
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:BusinessAcquisition
us-gaap:GoodwillAcquiredDuringPeriod

us-gaap:GoodwillImpairmentLoss
us-gaap:BusinessAcquisition
us-gaap:GoodwillPurchaseAccountingAdjustments

us-gaap:IncomeLossAttributableToParent

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInFinanceReceivables

us-gaap:IncreaseDecreaseInOperatingLeaseLiability

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefinitelivedIntangibleAssetsAcquired

us-gaap:InterestCostsCapitalized

us-gaap:InterestExpenseRelatedParty

us-gaap:InterestIncomeOther

us-gaap:LeaseCost
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:LitigationSettlementAmountAwardedToOtherParty
us-gaap:LitigationStatus, us-gaap:SubsequentEventType

us-gaap:NoncashOrPartNoncashAcquisitionDebtAssumed1
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation
us-gaap:CounterpartyName, us-gaap:DebtInstrument
us-gaap:DebtInstrument

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1

us-gaap:NoncashOrPartNoncashAcquisitionInventoryAcquired1

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeaseRightOfUseAssetAmortizationExpense
dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:OptionIndexedToIssuersEquityEquity
us-gaap:OptionIndexedToIssuersEquityShares

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
us-gaap:IncomeStatementLocation
us-gaap:IncomeStatementLocation
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfFinancingCosts

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireIntangibleAssets
tmus:LicenseAuctionType, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested

us-gaap:ProceedsFromIssuanceOfCommonStock
us-gaap:DebtInstrument
us-gaap:ProceedsFromIssuanceOfDebt
us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ProceedsFromIssuanceOfOtherLongTermDebt

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation
us-gaap:CounterpartyName, us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:SubsequentEventType

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:CounterpartyName, us-gaap:DebtInstrument
us-gaap:ProceedsFromRepaymentsOfOtherDebt
us-gaap:DebtInstrument

us-gaap:ProceedsFromSaleOfIntangibleAssets

us-gaap:ProceedsFromShortTermDebt
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation
us-gaap:PlanName
us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForLoanLeaseAndOtherLosses
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ReceivableWithImputedInterestEffectiveYieldInterestRate
us-gaap:DebtInstrument
us-gaap:RepaymentsOfDebt
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation
us-gaap:RepaymentsOfOtherLongTermDebt

us-gaap:RepaymentsOfShortTermDebt
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

us-gaap:RestructuringCharges
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserveAccrualAdjustment1
us-gaap:RestructuringCostAndReserve

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RoyaltyExpense
us-gaap:CounterpartyName
us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction
us-gaap:CounterpartyName, us-gaap:SubsequentEventType
dei:LegalEntity
us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction
dei:LegalEntity, us-gaap:SubsequentEventType

us-gaap:SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseCost
us-gaap:DebtInstrument
us-gaap:WriteOffOfDeferredDebtIssuanceCost
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:AccruedLiabilitiesTollAndInterconnect
us-gaap:IncomeTaxAuthority
tmus:CarryforwardNetOperatingLossTaxEffected

tmus:DebtInstrumentAverageAmountOutstandingDuringPeriod
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
tmus:DebtInstrumentPrincipalAmountOutstanding

tmus:DebtInstrumentRedeemedFaceAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:DeferredTaxAssetsOperatingLeaseLiability

tmus:DeferredTaxLiabilitiesGoodwillandIntangibleAssetsIndefiniteLivedIntangibleAssets

tmus:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset

tmus:DefinedBenefitPlanExpectedFutureBenefitPaymentYearsFourAndFive

tmus:DefinedBenefitPlanExpectedFutureBenefitPaymentYearsTwoAndThree

tmus:FinancingReceivableAllowanceForCreditLossAndImputedDiscountCurrent

tmus:FinancingReceivableAllowanceForCreditLossAndImputedDiscountNoncurrent
us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment
tmus:FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:CounterpartyName
tmus:LeaseAgreementNumberOfTowers

tmus:LeaseAndServiceCreditCommitmentDueInNextRollingTwelveMonths

tmus:LeaseAndServiceCreditCommitmentDueInRollingAfterYearFive

tmus:LeaseAndServiceCreditCommitmentDueInRollingYearFourAndFive

tmus:LeaseAndServiceCreditCommitmentDueInRollingYearTwoAndThree

tmus:LeaseAndServiceCreditCommitmentMaximumRemainingCommitment

tmus:LesseeOperatingLeaseLeaseNotyetCommencedPaymentsDue
dei:LegalEntity, us-gaap:CounterpartyName, tmus:AssetAcquisition
tmus:LicencePurchaseAgreementPurchasePriceLiability
us-gaap:CounterpartyName, us-gaap:DebtInstrument
tmus:LongTermDebtCurrentAndNoncurrent

tmus:LongtermDebtandLongtermDebttoAffiliates

tmus:MergerCommitmentSettlementDueInNextRollingTwelveMonths

tmus:MergerCommitmentSettlementDueInRollingYearFourAndFive

tmus:MergerCommitmentSettlementDueInRollingYearTwoAndThree

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionNextTwelveMonths

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsThereafter

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFourAndFiveYears

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinTwoAndThreeYears
us-gaap:IncomeTaxAuthority
tmus:OperatingLossCarryforwardsTaxEffected
us-gaap:BalanceSheetLocation
tmus:OutstandingChecks
dei:LegalEntity
tmus:ProxyAgreementPercentageOfVotingInterests
dei:LegalEntity, us-gaap:SubsequentEventType

tmus:PurchaseObligationDueInNextRollingTwelveMonths

tmus:PurchaseObligationDueInRollingAfterYearFive

tmus:PurchaseObligationDueInRollingYearFourAndFive

tmus:PurchaseObligationDueInRollingYearTwoAndThree

tmus:ReceivableWithImputedInterestDiscountAndAllowancesPercentageOfGrossAccountsReceivable
us-gaap:ConsolidatedEntities, us-gaap:TransactionType
tmus:RevolvingReceivablesFacilityMaximumBorrowingCapacity
us-gaap:TransactionType
us-gaap:ConsolidatedEntities, us-gaap:TransactionType
tmus:RevolvingReceivablesFacilityOutstandingBorrowings
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType

tmus:SaleLeasebackTransactionTowerObligation

tmus:UnamortizedImputedDiscountandAllowanceforCreditLosses
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

tmus:UnrecognizedTaxBenefitsIndirectTaxEffectsExcluded

us-gaap:AccountsPayableRelatedPartiesCurrent

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccruedAdvertisingCurrent

us-gaap:AccruedSalesCommissionCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetRetirementObligation
us-gaap:BalanceSheetLocation
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

us-gaap:CapitalizedContractCostNet

us-gaap:CapitalizedCostsAssetRetirementCosts

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerLiability
us-gaap:DebtInstrument
us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DebtInstrumentRepurchasedFaceAmount
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation
us-gaap:CounterpartyName, us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentUnamortizedDiscount
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:ShortTermDebtType

us-gaap:DebtInstrumentUnamortizedPremium

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DeferredFinanceCostsGross

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
tmus:LicenseAuctionType, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:DepositsAssetsCurrent
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
us-gaap:DerecognizedAssetsSecuritizedOrAssetbackedFinancingArrangementAssetsAndAnyOtherFinancialAssetsManagedTogetherPrincipalAmountOutstanding

us-gaap:DueFromAffiliateCurrent

us-gaap:DueToAffiliateCurrent
us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DueToAffiliateCurrentAndNoncurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType

us-gaap:DueToAffiliateNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueInRollingYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss

us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:IndefiniteLivedLicenseAgreements

us-gaap:InterestPayableCurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceived

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextRollingTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRollingYearTwo

us-gaap:LettersOfCreditOutstandingAmount
us-gaap:CounterpartyName, us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LoansPayableFairValueDisclosure
us-gaap:ShortTermDebtType

us-gaap:NotesAndLoansReceivableNetCurrent

us-gaap:NotesAndLoansReceivableNetNoncurrent
us-gaap:CounterpartyName, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:NotesPayableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:NotesPayableRelatedPartiesClassifiedCurrent

us-gaap:NotesReceivableGross
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:NotesReceivableNet
us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:TransactionType
us-gaap:OtherLiabilities

us-gaap:PrepaidExpenseCurrent

us-gaap:ReceivableWithImputedInterestDiscount

us-gaap:ReceivableWithImputedInterestNetAmount
us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment

us-gaap:RestructuringAndRelatedCostCostIncurredToDate1
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:BusinessAcquisition
us-gaap:SaleLeasebackTransactionDescription
us-gaap:SaleLeasebackTransactionNetBookValue
us-gaap:BusinessAcquisition
us-gaap:SeniorNotes
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested
us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTerms, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:SharesSubjectToMandatoryRedemptionSettlementTermsNumberOfShares

us-gaap:ShortTermBorrowings
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument
us-gaap:ShareRepurchaseProgram, us-gaap:StatementScenario
us-gaap:StockRepurchaseProgramAuthorizedAmount1
us-gaap:BalanceSheetLocation, us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType
us-gaap:TradingSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Finite Lived Intangible Assets Net
Assets
Inventory Net
Current Assets
Other Assets Current
NonCurrent Assets
Finite Lived Intangible Assets Net
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Liabilities Current
Current Liabilities
Other Accrued Liabilities Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Inventories
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █████▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▅▄▅▄▄▄▃▁▂▁▁▁1253.7181221252.7835641251.5668991249.798741236.528444865.998532864.158739862.690751860.135593858.643481856.344347853.852764852.04067862.244084871.501578871.420065870.456447869.39525867.2624832.257819829.752956859.382827824.716119822.01722821.122537808.605526821.707289807.221761813.556137802.520723761.96472726.877458664.603682366.556369535.286077365.019836363.514983364.28316NA364.865226365.39028361.406194NA356.423216355.685446354.003541
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █████▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▃▁▂▁▁▁1247.5633311243.5200261241.5786151238.4506651236.528444858.148284856.294467854.578241854.368443851.223498849.102785847.08712847.660488855.222664837.416683831.189779830.971528827.723034824.982734822.998697822.43449819.431761816.585782815.069272811.605031808.605526807.396425807.221761803.923913802.520723761.96472726.877458664.603682364.999137535.286077363.584552363.263805362.718613NA362.019205360.226487356.98827NA353.954532353.278423352.782898
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:StockCompensationPlan█▁0.0508736e-06NA0.05448510.2349471.807812NA0.0002410.0678560.266452NA0.537810.7979480.06758NA0.00.0483970.009993NA0.2786750.3075730.967839NA0.5764081.13164325.935082NA21.291617NANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▃▃▃▃▂▄▃▃▄▄▃▃▃▃█▃▃▃▂▂▂▃▂▂▂▁▂▁▂▁▁▁▁▁▂▂▂▂▂▂▂▂▁▂▂▂0.780.750.61.010.091.110.881.021.11.070.750.940.920.783.220.650.680.830.460.430.260.570.350.150.43-0.090.13-0.120.49-0.19-0.03-0.05-0.020.050.090.530.410.060.250.190.230.160.040.220.220.06
us-gaap:EarningsPerShareDiluted ▃▃▃▄▂▄▃▄▄▄▃▃▃▃█▃▃▃▂▂▂▃▂▂▂▁▂▁▂▁▁▁▁▂▂▃▂▂▂▂▂▂▁▂▂▂0.780.740.61.00.091.10.871.011.091.060.750.930.920.783.110.630.670.80.450.420.250.560.340.150.42-0.090.12-0.120.48-0.19-0.03-0.05-0.020.050.090.520.410.060.250.190.230.150.040.220.220.06
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare 7.8e-07NA6e-071.01e-06-1.7000000000000001e-071.1100000000000002e-068.799999999999994e-071.02e-061.1e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare 7.8e-07NA6e-071e-06-1.7000000000000001e-071.1e-068.699999999999996e-071.01e-061.0900000000000002e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 COGS Ratio us-gaap:ProductOrService tmus:ProductEquipment▇▇█▆▅▁▂▁▁▂▂▁▁▁▂▁5215.05346.05973.04953.04269.02117.02875.02186.02263.02516.02940.02391.02325.02353.02708.02118.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService us-gaap:Service████▇▂▂▂▂▂▂▁▁▁▁▁14492.014192.014180.014139.013230.08713.08708.08583.08426.08277.08189.08066.07931.07806.07757.07629.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _▇▇▆█▃▅▄▅▅▅▄▅▅▅▄▅▅▄▄▄▃▄▃▂▃▁▂▁▄▁▁▂▂▁▁▂▂▁▂▂▂▁▂2106.02139.01712.02565.0820.01539.01234.01471.01541.01476.01137.01440.01450.01282.01112.01323.01416.01037.0942.0989.0768.01103.0838.0513.0597.0117.0433.049.0962.0-28.0139.0297.0181.0107.828121.516292.238311.94898.267215.115176.831210.255145.337207.321NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▄▄▃▅▂▂▄▃▃▃▂▃▃▃█▃▃▃▂▂▂▃▂▂▂▁▂▁▂▁▁▁▁▁▁▂▂▁▂▂▂▂▁▂▂▁1013.0969.0790.01290.0112.0159.0953.0613.0647.0719.0308.0795.0785.0668.02711.0551.0582.0699.0390.0368.0228.0476.0297.0136.0361.0-63.0101.0-93.0391.0-154.0-19.0-36.0-54.021.42726.688196.629149.79720.7594.92263.96174.69659.85122.41176.77580.83323.321
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService tmus:ProductEquipment▇▇█▅▃▁▃▁▁▂▃▂▂▂▃▁5453.05142.05825.04367.03667.02529.03518.02704.02661.03016.03568.02862.02772.02845.03459.02617.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:Service▇▇█▆▆▁▁▂▁▁▁▁▁▁▁▁3491.03384.03827.03314.03098.01639.01694.01733.01649.01546.01602.01586.01530.01589.01580.01594.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ███▇▇▄▅▄▄▄▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁17844.017620.018629.016707.016851.09574.010644.09590.09438.09604.010308.09399.09121.09173.09647.08696.08797.08576.09233.08257.08454.07496.07409.07336.07582.07661.07721.07301.06223.06903.06688.06391.06047.01179.2331162.833966.922969.2321178.3231023.051028.557999.1981049.04858.205812.855814.124865.272
us-gaap:GainsLossesOnExtinguishmentOfDebt █▄▄▄▁-28.0-101.0-100.0-108.0-163.0NA0.00.0-19.00.00.00.0-90.0-32.00.00.0-88.0NANANANANANANANANANANANANANANANANA0.00.00.0NA0.00.0-9.536NA-128.036-15.590.0NA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 1255.0NA821.01660.0-208.01257.0965.01195.01240.01203.0838.01130.01068.0881.0714.0906.0934.0607.0606.0598.0372.0751.0481.0238.0363.0-104.0200.0-211.0677.0-253.0-139.06.05.031.93957.102278.648243.04628.662147.729107.944134.43689.54615.06126.653132.82237.758
us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 978.0NA750.01253.0-210.0951.0751.0870.0939.0908.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ██▇█▇█▇███▇██▇▁██▇▇▇▇█▇▇▇▇▇▆█▇▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇277.0246.071.0407.02.0306.0214.0325.0301.0295.0198.0335.0286.0210.0-1993.0356.0353.0-91.0216.0232.0147.0272.0184.0100.02.0-41.099.0-117.0286.0-102.0-119.042.021.012.54325.43785.98194.2117.65856.45938.61850.10133.1681.50949.36652.90715.097
us-gaap:IncomeTaxesPaidNet ▆▃█▆▃▃▂▂▄▃▂▃▂▁▂▁▂▂▁▂▂▁▂▂▃▁▂▁▃▁▁▂▂▁▂▂63.022.0100.063.031.024.011.05.040.032.011.029.010.01.08.02.06.015.02.04.017.02.013.08.031.02.013.00.023.00.0-1.07.018.0-4.018.09.0NANANANANANANANANANA
us-gaap:InterestExpenseDebt ██▇▇█▁▁▁▁▁820.0792.0757.0765.0776.0185.0182.0184.0182.0179.0NANANANANANANANANANANANANANANANANANANANANANA109.0NANANANANANANANANANANANANA
us-gaap:InterestPaidNet ██▇█▅▂▁▂▁▂▁▂▄▃▃▂▆▄▃▄▃▃▂▂▂▂▂▂▂▂913.0945.0844.0940.0608.0341.0216.0327.0245.0340.0222.0366.0559.0378.0463.0343.0727.0495.0389.0478.0399.0415.0329.0348.0294.0327.0359.0369.0353.0286.0NANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▄▄▃▄▂▄▃▄▄▄▃▃▃▃█▃▃▃▂▂▂▃▂▂▂▁▂▁▂▁▁▁▁▁▁▂▂▁▂▂▂▂▁▂▂▁978.0933.0750.01253.0110.0951.0751.0870.0939.0908.0640.0795.0782.0671.02707.0550.0581.0698.0390.0366.0225.0479.0297.0138.0361.0-63.0101.0-94.0391.0-151.0-20.0-36.0-16.019.39631.666192.667148.83521.00491.27169.32684.33556.37813.55277.28779.91522.661
us-gaap:NonoperatingIncomeExpense ▂▁▂▂▁▆▆▆▆▆▆▆▅▅▅▅▅▅▆▅▅▆▆▆▆▇▆▆▆▇▆▆▇█████████▇███-851.0-960.0-891.0-905.0-1028.0-282.0-269.0-276.0-301.0-273.0-299.0-310.0-382.0-401.0-398.0-417.0-482.0-430.0-336.0-391.0-396.0-352.0-357.0-275.0-234.0-221.0-233.0-260.0-285.0-225.0-278.0-291.0-176.0-75.889-64.413-13.59-68.902-69.605-67.386-68.887-75.819-55.791-192.261-81.281-65.59-67.473
us-gaap:OperatingIncomeLoss ▇▇▆█▃▅▄▅▅▅▄▅▅▅▄▅▅▄▄▄▃▄▃▂▃▁▂▁▄▁▁▂▂▁▁▂▂▁▂▂▂▁▂▂▂▁2106.02139.01712.02565.0820.01539.01234.01471.01541.01476.01137.01440.01450.01282.01112.01323.01416.01037.0942.0989.0768.01103.0838.0513.0597.0117.0433.049.0962.0-28.0139.0297.0181.0107.828121.516292.238311.94898.267215.115176.831210.255145.337207.321207.934198.412105.231
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▃▄▁█1.02.00.04.0NANANANANANANANANANANANANANANANANANANANANANA0.00.00.00.00.00.0-104.042.0-29.0-37.084.0NANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▇▇▇▇▇▁█▅▅▅▄▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▇▇▇▇▇▇▇▇35.036.040.037.02.0-792.0202.0-257.0-292.0-189.0-332.00.03.0-3.04.01.01.01.00.02.03.0-3.00.0-2.00.00.00.01.00.0-3.01.00.0-38.02.031-4.9773.9620.962-0.2543.652-5.365-9.639NANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▅▃▃▃▁▅▅▅▅▆▅▅▄▆▆▅▃▅▅▅▅▅▅▅▅▅▆▅▅▅▅▅█▅▅▅▅▅▅▅▅▅▅▅▅▅-1.0-125.0-101.0-99.0-195.0-10.04.03.0-22.07.0-3.03.0-64.010.016.01.0-92.02.00.0-1.0-3.0-2.0-3.0-1.01.0-8.021.0-14.0-12.0-6.0-16.0-7.0118.00.0844.4620.1050.210.1030.1650.0930.1860.255-0.411-0.462-0.479-0.455
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ████▇▅▅▅▅▅▅▅▄▄▅▄▄▄▄▄▄▄▄▃▄▃▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁19950.019759.020341.019272.017671.011113.011878.011061.010979.011080.011445.010839.010571.010455.010759.010019.010213.09613.010175.09246.09222.08599.08247.07849.08179.07778.08154.07350.07185.06875.06827.06688.06228.04677.04909.04893.04883.05034.01238.1641205.3881209.4531194.3771065.5251020.7891012.536970.503
us-gaap:Revenues ████▇▅▅▅▅▅▅▅▄▄▅▄▄▄▄▄▄▄▄▃▄▃▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁19950.019759.020341.019272.017671.011113.011878.011061.010979.011080.011445.010839.010571.010455.010759.010019.010213.09613.010175.09246.09222.08599.08247.07849.08179.07778.08154.07350.07185.06875.06827.06688.06228.04677.04909.04893.04883.05034.01238.1641205.3881209.4531194.3771065.5251020.7891012.536970.503
us-gaap:SellingGeneralAndAdministrativeExpense ▇▇▇▇█▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁4823.04805.04758.04876.05604.03688.03656.03498.03543.03442.03498.03314.03185.03164.03291.03098.02915.02955.02959.02898.02772.02749.02755.02624.02438.02372.02333.02283.02151.02096.02096.01933.01847.0194.611189.292163.409167.494176.593157.173162.459154.556169.771155.72147.431158.6159.909
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ████▇▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁204124.0203332.0200162.0192443.0187199.087226.086921.086109.084788.083073.072468.070182.069692.072004.070563.067923.067159.068048.065891.064272.063968.063063.062436.058473.057188.056558.056653.055115.051664.050169.049953.045767.044734.013662.54610189.41510071.9099729.6329509.2079482.9319279.6019101.0278648.3077918.58NANANA
us-gaap:LiabilitiesAndStockholdersEquity ████▇▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁204124.0203332.0200162.0192443.0187199.087226.086921.086109.084788.083073.072468.070182.069692.072004.070563.067923.067159.068048.065891.064272.063968.063063.062436.058473.057188.056558.056653.055115.051664.050169.049953.045767.044734.013662.54610189.41510071.9099729.6329509.2079482.9319279.6019101.0278648.3077918.58NANANA
us-gaap:StockholdersEquity █████▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁67470.066377.065344.064487.062996.028977.028789.027771.026967.026181.024718.024355.023390.022876.022559.020277.019614.018963.018236.017853.017395.017104.016557.016252.016053.015650.015663.014525.014563.014156.014245.012415.012359.03391.9413358.9073322.4473116.292957.7762927.62825.472749.7182632.5532541.576NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▇▆█▇█▃▃▃▃▃▃▃▃▃▃▃▃▅▅▅▅▅▅▄▄▄▅▅▄▄▄▃▃▃▁▁▁▁▁▁▁▁▁20570.018779.023885.019465.024321.09487.09305.08458.08114.08745.08281.07286.07091.09609.08915.07449.06780.015899.014217.013530.014280.013344.014890.012656.011657.011635.013984.013295.09896.012957.012228.07964.07313.06772.7043187.3033184.8222895.82767.352743.5932549.8182568.3022229.511593.885NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▆▅█▅█▂▂▂▂▂▂▁▁▃▂▁▁▆▄▄▄▃▄▃▃▃▄▅▃▄▅▂▂▃▂▂▂▂▂▂▂▂▁▁▁▁7793.06677.010385.06571.011076.01112.01528.01653.01105.01439.01203.0329.0215.02527.01219.0739.0181.07501.05500.05352.05538.03647.04582.02633.02642.03032.05315.05787.03080.05471.05891.02365.02362.02701.2812368.3022057.3391901.1681886.2381943.2821840.7611855.9941321.55796.531889.784776.54914.574
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▆▅█▅█▂▂▂▂▂▂▁▁▂▂7878.06759.010463.06657.011161.01112.01528.01653.01105.01439.01203.0329.0215.02527.01219.0NANANA5500.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▆▇▇▅▁▂▁▁▁▁▁▁▁▂▁▁▂▂▂▂▂▁▁▁▂▂█▇▆▆▅▄4528.03592.04254.04313.03355.01836.01888.01822.01817.01749.01769.01652.01630.01689.01915.01734.01719.01851.01896.01885.01866.01880.01788.01810.01827.01933.01865.04433.03939.03560.03619.03370.03000.0NA2678.0NANANANANANA56.6458.056NANANA
us-gaap:InventoryNet ▅▇█▆▄▃▂▂▂▃▃▂▂▄▅▂▃▃▃▃▄▄▄▃▃▃▃▁▂▁▁▂▂1707.02209.02527.01931.01549.01225.0964.0801.0998.01261.01084.0958.0998.01311.01566.0999.01208.01021.01111.01039.01388.01443.01295.01236.01135.01230.01085.0674.0791.0676.0586.0761.0819.0NA457.0NANANANANANANANANANANA
us-gaap:OtherAssetsCurrent ▅▅▇█▇█▇▅▅▅▅▆▆▅▆▅▅▄▅▄▄▄▅▆▃▄▅▄▄▃▄▃▂▁▁▁▁▁▁▁▁▁▁1642.01770.02496.02889.02586.02882.02305.01737.01730.01814.01676.01969.01929.01788.01903.01817.01580.01406.01537.01336.01415.01263.01813.01890.01019.01063.01593.01369.01179.0905.01252.0676.0598.070.23869.45852.34922.70935.43444.77242.79549.88758.84863.135NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType tmus:BuildingsandEquipmentNANA4006.03872.03554.0NA2587.0NANANA2423.0NANANA2066.0NANANA1657.0NANANA1900.0NANANA1948.0NANANA1862.0NANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType tmus:WirelessCommunicationsSystemsNANA49453.045666.043876.0NA34353.0NANANA35282.0NANANA32706.0NANANA29272.0NANANA27063.0NANANA25633.0NANANA24594.0NANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:AssetsLeasedToOthersNANA6989.07436.07605.01223.01139.0NANANA1164.0NANANA1209.0NANANA2624.0NANANA2236.0NANANA0.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerSoftwareIntangibleAssetNANA16412.015703.015020.0NA12705.0NANANA11712.0NANANA10563.0NANANA8488.0NANANA8524.0NANANA7593.0NANANA6424.06198.05753.0NA5078.0NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA4595.04180.03933.0NA2973.0NANANA2776.0NANANA1771.0NANANA2613.0NANANA2466.0NANANA1874.0NANANA1147.01603.01992.0NA464.195NANANA354.068NANANA425.906NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNANA236.0236.0236.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA1879.01750.01666.0NA1345.0NANANA1299.0NANANA1182.0NANANA1068.0NANANA1003.0NANANA988.0NANANA971.0NANANA60.994NANANA60.635NANANA57.853NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA42395.040276.037089.0NA33118.0NANANA31297.0NANANA27301.0NANANA24779.0NANANA23192.0NANANA21791.021410.021137.020282.019649.019320.018787.0NA2511.419NANANA1930.876NANANA1409.611NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType us-gaap:AssetsLeasedToOthersNANA2170.01648.0984.0404.0407.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AmortizationOfIntangibleAssets ▆▇███▁▁▁▁295.0366.0406.0383.0387.025.029.018.018.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet █████▄▄▄▄▄▅▅▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁▁39752.040549.041175.038567.038801.022149.021984.022098.021847.021464.023359.022502.022375.022308.022196.021570.021423.021235.020943.020574.020570.020625.020000.018101.016910.016483.016245.015798.015537.015427.015349.015370.015185.04177.54292.0614197.3994069.344007.1774017.9994009.2653856.8693738.7333659.445NANANA
us-gaap:Goodwill █████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁11152.011158.011117.010906.010910.01930.01930.01930.01901.01901.01901.01901.01901.01901.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.01683.0NA0.0NANANA8134.0NANANANANANANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass us-gaap:LicensingAgreements█▇▁▆▄82917.082901.082828.082891.082870.0NA36465.036442.036430.0NA35559.035553.035532.035504.035366.035007.035060.027150.027014.0NANANA23955.0NANANA21955.0NANANA27847.0NANANA24952.0NANANA23251.0NANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▆▇▇██▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▃4600.04892.05298.05660.06038.091.0115.0144.0157.0174.0198.0229.0260.0291.0217.0256.0296.0338.0376.0431.0486.0541.0594.0662.0735.0805.0870.0956.01040.01123.01204.01297.01390.0NA79.0NANANANANANANANANANANA
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us-gaap:OperatingLeaseRightOfUseAsset ████▅▄▄▄▄▃▁27511.027793.028021.027999.017246.010956.010933.010914.010439.09509.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
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  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
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us-gaap:OperatingLeaseLiabilityNoncurrent ████▅▄▄▄▄▃▁26515.026602.026719.026658.015487.010464.010539.010614.010145.09339.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▃▃▃▄█▃▁▂▂▂▁▂▂▁150.0154.0149.0177.0272.0152.0113.0140.0143.0121.0112.0127.0126.0108.0NANANANANANANANANANANANANANANANA46.048.0NANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ██▇▆▂▄▄▄▅▃▃▃▃▂▅▅▄▄▄▄▄▃▅▄▃▂▃▃▃▂▃▂▄▁▁▂▁▁▁▁▁▁▁▁▁▁3779.03661.03474.02772.0777.01617.01537.01748.02147.01392.0954.0914.01261.0770.02058.02362.01829.01713.01602.01740.01768.01025.02233.01531.01161.0489.01355.01062.0970.0759.01004.0826.01491.549223.451332.983391.898319.666136.904308.148271.56343.787138.313315.109341.94112.419225.032
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us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▄▄▁█▃▃▃▃▃▃▃▂▃▃▃▂▄▃▃▃▃▄▃▃▃▃▄▃▃▄▃▂▄▃▃▃▃▃▃▃▃▃▃▃▃-577.03874.03979.0-6144.015628.0-453.0-775.0-543.0-866.0-190.0-311.0-758.0-3267.01000.0-652.0-349.0-2016.01838.0-160.0-67.0790.0-100.04038.0-331.0-214.0-80.0-21.02810.0-51.0-214.03746.0307.0-3488.4653479.465-16.34-28.30622.703-11.058-18.7648.95426.186555.442-727.593638.482-33.012-54.809
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▁▅▁█▃▃▃▃▃▄▃▂▄1119.0-3704.03806.0-4504.010049.0-416.0-125.0548.0-334.0236.0874.0114.0-2312.01308.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ██▇█▇█████████▁██▇██▇█▇▇▇▇226.0211.079.0335.098.0310.0242.0294.0267.0288.0218.0284.0272.0206.0-1999.0347.0345.0-97.0291.0219.0140.0264.0174.0134.0-2.0-50.0NANANANANANANA11.50525.56584.00692.8814.35755.32737.89549.13832.2571.37348.40551.52314.177
us-gaap:DepreciationDepletionAndAmortization █████▄▄▄▃▃▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁4077.04289.04219.04150.04064.01718.01776.01655.01585.01600.01640.01637.01634.01575.01485.01416.01519.01564.01548.01568.01575.01552.01369.01157.01075.01087.01090.01138.01129.01055.0997.0987.0888.0173.167172.167163.089153.351152.819136.307139.309134.525128.695118.826113.804109.302107.801
us-gaap:IncreaseDecreaseInAccountsReceivable █▁▃▇▃▄▅▄▄▅▆▆▅▅▂▂▁▂▂▂▂▂▂▂▁▂1839.0-96.0489.01538.0498.0748.01016.0745.0805.01143.01370.01238.01136.0873.0278.0119.0-21.068.0141.0155.0105.0202.0103.048.0-62.0170.0NANANANANANANANANANANANANANANA-1.25NANANA1.274
us-gaap:IncreaseDecreaseInInventories ▁▂▅▅▅▅▅▃▂▄▄▃▃▃▆▃▄▃▄▂▃▆█▆▃▃-584.0-279.0609.0549.0553.0511.0478.036.0-162.0265.0244.0115.0-125.0-33.0816.0-113.0185.0-44.0305.0-301.0-3.0801.01522.0915.0-87.0145.0NANANANANANANA-4.285-53.47653.6216.85312.5192.6466.954-145.801124.834.847-69.16177.769-29.807
us-gaap:NetCashProvidedByUsedInOperatingActivities ██▇▆▂▄▄▄▅▃▃▃▃▂▅▅▄▄▄▄▄▃▅▄▃▂▃▃▃▂▃▂▄▁▁▂▁▁▁▁▁▁▁▁▁▁3779.03661.03474.02772.0777.01617.01537.01748.02147.01392.0954.0914.01261.0770.02058.02362.01829.01713.01602.01740.01768.01025.02233.01531.01161.0489.01355.01062.0970.0759.01004.0826.01491.549223.451332.983391.898319.666136.904308.148271.56343.787138.313315.109341.94112.419225.032
us-gaap:NetIncomeLoss ▄▄▃▄▂▄▃▄▄▄▃▃▃▃█▃▃▃▂▂▂▃▂▂▂▁▂▁▂▁▁▁▁▁▁▂▂▁▂▂▂▂▁▂▂▁978.0933.0750.01253.0110.0951.0751.0870.0939.0908.0640.0795.0782.0671.02707.0550.0581.0698.0390.0366.0225.0479.0297.0138.0361.0-63.0101.0-94.0391.0-151.0-20.0-36.0-16.019.39631.666192.667148.83521.00491.27169.32684.33556.37813.55277.28779.91522.661
us-gaap:ShareBasedCompensation ▄▄▄▅█▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁134.0138.0136.0161.0259.0138.0129.0126.0130.0110.0100.0115.0112.097.085.082.072.067.064.059.060.052.048.042.056.055.0NANANANANANANA9.5739.2189.2579.34310.1569.6499.89810.9611.28411.43411.7711.91711.416
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▁▅▆▃▆▆▆▆▆▆▆▆▆▆▆▃▆▆▅▆▅▄▆▆▅▅▆▅▆▆▆█▅▆▆▆▆▆▆▆▆▆▆▆▆-2083.0-11239.0-3647.0-1132.0-6356.0-1580.0-887.0-657.0-1615.0-966.0231.0-42.0-306.0-462.0-926.0-1455.0-7133.0-1550.0-1294.0-1859.0-667.0-1860.0-4322.0-1209.0-1337.0-2692.0-1806.0-1165.0-3310.0-965.0-1224.0-1130.03631.937-3369.937-5.68-207.421-327.439-182.89-186.863-295.743-235.529-168.736319.231-867.178-217.441-185.03
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▇▇█▇▅▄▃▄▄▄▃▃▄▃▂▃▃▄▂▃▃▃▃▃▃▃▃▃▃▃▂▃▄▁▁▁▁▁▁▁▁▁▁▁▁▁3270.03183.03807.03217.02257.01753.01157.01514.01789.01931.01184.01362.01629.01366.0921.01441.01347.01528.0859.01159.01349.01335.01431.01120.01191.0982.01299.01131.0940.0947.0882.01017.01971.392154.608257.518262.117182.199144.016190.144248.052264.541187.032242.442232.606176.042139.295
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▄▄▁█▃▃▃▃▃▃▃▂▃▃▃▂▄▃▃▃▃▄▃▃▃▃▄▃▃▄▃▂▄▃▃▃▃▃▃▃▃▃▃▃▃-577.03874.03979.0-6144.015628.0-453.0-775.0-543.0-866.0-190.0-311.0-758.0-3267.01000.0-652.0-349.0-2016.01838.0-160.0-67.0790.0-100.04038.0-331.0-214.0-80.0-21.02810.0-51.0-214.03746.0307.0-3488.4653479.465-16.34-28.30622.703-11.058-18.7648.95426.186555.442-727.593638.482-33.012-54.809
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▂▃▃▁█3006.06763.08643.00.026694.0NA0.00.00.00.00.00.00.02494.00.0500.04485.05495.00.00.0997.00.03979.00.00.0NA0.0NANANA1996.0NANANA0.0NANANANANANANANANANANA
us-gaap:RepaymentsOfLongTermDebt ▂▁▃▄█3150.02219.04209.05678.010529.0NA0.00.0600.00.00.00.02350.0999.00.00.06750.03480.05.05.05.05.00.00.00.00.0NANANANANANANA6.3476.3486.3476.3486.3476.3476.3476.3485.254.04.04.04.0
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.02546.016990.0NA0.00.00.00.00.00.0405.0666.0427.00.00.00.0NANANANANANANANANANANANANANANA2.2190.9570.8650.621.8880.5590.7681.1352.4560.3280.7340.2260.626
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value12531252125112491236865864862860858856853852862871871870869867832829859824822821808821807813802761726664366535365363364364365361356355354
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value12471243124112381236858856854854851849847847855837831830827824822822819816815811808807807803802761726664364535363363362362360356353353352
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:StockCompensationPlan


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value0.0508736e-060.054485101.8078120.0002410.0678560.2664520.537810.7979480.067580.00.0483970.0099930.2786750.3075730.9678390.5764081.1316432521
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.780.750.61.010.091.110.881.021.11.070.750.940.920.783.220.650.680.830.460.430.260.570.350.150.43-0.090.13-0.120.49-0.19-0.03-0.05-0.020.050.090.530.410.060.250.190.230.160.040.220.220.06
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.780.740.61.00.091.10.871.011.091.060.750.930.920.783.110.630.670.80.450.420.250.560.340.150.42-0.090.12-0.120.48-0.19-0.03-0.05-0.020.050.090.520.410.060.250.190.230.150.040.220.220.06
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.780.61.01-0.171.110.881.021.1
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.780.61.0-0.171.10.871.011.09
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value101396979012901121599536136477193087957856682711551582699390368228476297136361-63.0101-93.0391-154.0-19.0-36.0-54.02126196149209463745922768023
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.93.96.70.61.48.05.55.96.52.77.37.46.425.25.55.77.33.84.02.55.53.61.74.4-0.81.2-1.35.4-2.2-0.3-0.5-0.90.50.54.03.10.47.75.36.25.02.17.58.02.4

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

tmus:ProductEquipment


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value5453514258254367366725293518270426613016356828622772284534592617
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.326.028.622.720.822.829.624.424.227.231.226.426.227.232.126.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:ProductEquipment104.696.20.088.285.9119.50.0123.7117.6119.90.0119.7119.2120.90.0123.6

us-gaap:Service


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3491338438273314309816391694173316491546160215861530158915801594
Percentage of CostOfGoodsAndServicesSold64.065.865.775.984.564.848.264.162.051.344.955.455.255.945.760.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.517.118.817.217.514.714.315.715.014.014.014.614.515.214.715.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service24.123.80.023.423.418.80.020.219.618.70.019.719.320.40.020.9

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1784417620186291670716851957410644959094389604103089399912191739647869687978576923382578454749674097336758276617721730162236903668863916047117911629669691178102310289991049858812814865
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.489.291.686.795.486.289.686.786.086.790.186.786.387.789.786.886.189.290.789.391.787.289.893.592.798.594.799.386.6100.498.095.697.125.223.719.819.823.482.685.382.687.880.579.680.489.2

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value-28000000.0-101000000.0-100000000.0-108000000.0-163000000.000-19000000.0000-90000000.0-32000000.000-88000000.000000-9536000.0-128040000.0-15590000.00
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.0100.0100.0100.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.00.00.0100.0100.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.5-0.5-0.6-0.90.00.0-0.20.00.00.0-0.9-0.30.00.0-0.90.00.00.00.00.0-0.8-12.0-1.50.0

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value12558211660-208.0125796511951240120383811301068881714906934607606598372751481238363-104.0200-211.0677-253.0-139.06.05.0315727824328147107134891512613237
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.34.08.6-1.211.38.110.811.310.97.310.410.18.46.69.09.16.36.06.54.08.75.83.04.4-1.32.5-2.99.4-3.7-2.00.10.10.71.25.75.00.611.99.011.17.51.412.413.13.9

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9787501253-210.0951751870939908
Percentage of IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.93.76.5-1.28.66.37.98.68.2

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value277246714072.0306214325301295198335286210-1993.0356353-91.02162321472721841002.0-41.099-117.0286-102.0-119.04221122585947.658563850331.509495215
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.20.32.10.02.81.82.92.72.71.73.12.72.0-18.53.63.5-0.92.12.51.63.22.21.30.0-0.51.2-1.64.0-1.5-1.70.60.30.30.51.81.90.24.63.24.12.80.14.85.21.6

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value6322100633124115.04032112910.01.08.02.06.0152.04.0172.0138.0312.0130.0230.0-1.07.018-4.0189.0
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.10.50.30.20.20.10.00.40.30.10.30.10.00.10.00.10.20.00.00.20.00.20.10.40.00.20.00.30.0-0.00.10.3-0.10.40.2

Interest Expense Debt

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312013-06-30
Value820792757765776185182184182179109
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.03.74.04.41.71.51.71.71.61.8

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value913945844940608341216327245340222366559378463343727495389478399415329348294327359369353286
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.64.84.14.93.43.11.83.02.23.11.93.45.33.64.33.47.15.13.85.24.34.84.04.43.64.24.45.04.94.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value97893375012531109517518709399086407957826712707550581698390366225479297138361-63.0101-94.0391-151.0-20.0-36.0-16.01931192148219169845613777922
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.94.73.76.50.68.66.37.98.68.25.67.37.46.425.25.55.77.33.84.02.45.63.61.84.4-0.81.2-1.35.4-2.2-0.3-0.5-0.30.40.63.93.00.47.45.87.04.71.37.67.92.3

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-12-312013-09-30
Value9789337501253110951751870939908640795782671-20.0-36.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.94.73.76.50.68.66.37.98.68.25.67.37.46.4-0.3-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-851.0-960.0-891.0-905.0-1028.0-282.0-269.0-276.0-301.0-273.0-299.0-310.0-382.0-401.0-398.0-417.0-482.0-430.0-336.0-391.0-396.0-352.0-357.0-275.0-234.0-221.0-233.0-260.0-285.0-225.0-278.0-291.0-176.0-75.889-64.413-13.59-68.902-69.605-67.386-68.887-75.819-55.791-192.261-81.281-65.59-67.473
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.3-4.9-4.4-4.7-5.8-2.5-2.3-2.5-2.7-2.5-2.6-2.9-3.6-3.8-3.7-4.2-4.7-4.5-3.3-4.2-4.3-4.1-4.3-3.5-2.9-2.8-2.9-3.5-4.0-3.3-4.1-4.4-2.8-1.6-1.3-0.3-1.4-1.4-5.4-5.7-6.3-4.7-18.0-8.0-6.5-7.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value21062139171225658201539123414711541147611371440145012821112132314161037942989768110383851359711743349962-28.013929718110712129231198215176210145207207198105
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.610.88.413.34.613.810.413.314.013.39.913.313.712.310.313.213.910.89.310.78.312.810.26.57.31.55.30.713.4-0.42.04.42.92.32.56.06.42.017.414.717.412.219.520.419.610.8

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1.02.00.04.00.00.00.00.00.00.0-104.042-29.0-37.084
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.00.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.0-1.70.9-0.6-0.81.7

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value353640372.0-792.0202-257.0-292.0-189.0-332.00.03.0-3.04.01.01.01.00.02.03.0-3.00.0-2.00.00.00.01.00.0-3.01.00.0-38.02.031-4.9773.9620.962-0.2543.652-5.365-9.639
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.00.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.20.0-7.11.7-2.3-2.7-1.7-2.90.00.0-0.00.00.00.00.00.00.00.0-0.00.0-0.00.00.00.00.00.0-0.00.00.0-0.60.0-0.10.10.0-0.00.3-0.4-0.8

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-312013-12-312013-09-30
Value353640372.0-792.0202-257.0-292.0-189.03.0-3.01.00.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.20.0-7.11.7-2.3-2.7-1.70.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1.0-125.0-101.0-99.0-195.0-10.04.03.0-22.07.0-3.03.0-64.010.0161.0-92.02.00.0-1.0-3.0-2.0-3.0-1.01.0-8.021-14.0-12.0-6.0-16.0-7.01180.0844.4620.1050.210.1030.1650.0930.1860.255-0.411-0.462-0.479-0.455
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.6-0.5-0.5-1.1-0.10.00.0-0.20.1-0.00.0-0.60.10.10.0-0.90.00.0-0.0-0.0-0.0-0.0-0.00.0-0.10.3-0.2-0.2-0.1-0.2-0.11.90.00.10.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value199501975920341192721767111113118781106110979110801144510839105711045510759100191021396131017592469222859982477849817977788154735071856875682766886228467749094893488350341238120512091194106510201012970
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

tmus:BrandedPostpaidRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value10492103031025110209995958875821574656135493538452445164507049834920
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.652.150.453.056.453.049.051.951.149.647.048.448.948.546.349.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.652.150.453.056.453.049.051.951.149.647.048.448.948.546.349.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:BrandedPostpaidRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:BrandedPostpaidRevenueOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value825820762677618310362346326310297289272259303294255225
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.23.73.53.52.83.03.13.02.82.62.72.62.52.82.92.52.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.23.73.53.52.83.03.13.02.82.62.72.62.52.82.92.52.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:BrandedPostpaidRevenueOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:BrandedPostpaidRevenuePhone


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value966794839489953293415577545954005287518350874955489248004680462645654500
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.548.046.649.552.950.246.048.848.246.844.445.746.345.943.546.244.746.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.548.046.649.552.950.246.048.848.246.844.445.746.345.943.546.244.746.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:BrandedPostpaidRevenuePhone100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:BrandedPrepaidRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2427235123542383231123732393238523792386239923952402240223712376
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.211.911.612.413.121.420.121.621.721.521.022.122.723.022.023.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.211.911.612.413.121.420.121.621.721.521.022.122.723.022.023.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:BrandedPrepaidRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:LeaseOfMobileCommunicationDevicesandAccessories


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value9141041124513501421165153142143161168176177171160159234324
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.65.36.17.08.01.51.31.31.31.51.51.61.71.61.51.62.33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.65.36.17.08.01.51.31.31.31.51.51.61.71.61.51.62.33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:LeaseOfMobileCommunicationDevicesandAccessories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:OtherServiceRevenue


Revenue
Period End2021-06-302020-06-30
Value638552
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.23.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.23.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:OtherServiceRevenue100.0100.0

tmus:ProductEquipment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value5215534659734953426921172875218622632516294023912325235327082118
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.127.129.425.724.219.024.219.820.622.725.722.122.022.525.221.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.127.129.425.724.219.024.219.820.622.725.722.122.022.525.221.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:ProductEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:RoamingandOtherServiceRevenue


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value641648617552128153131121941028990687959
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.23.23.23.11.21.31.21.10.80.90.80.90.70.70.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.23.23.23.11.21.31.21.10.80.90.80.90.70.70.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:RoamingandOtherServiceRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:WholesaleServiceRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value935897927930408325341321313304304338275266324274
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.74.54.64.82.32.92.92.92.92.72.73.12.62.53.02.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.74.54.64.82.32.92.92.92.92.72.73.12.62.53.02.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:WholesaleServiceRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductAndServiceOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value243221188180172283295292290287316382315296294272
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.10.90.91.02.52.52.62.62.62.83.53.02.82.72.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.10.90.91.02.52.52.62.62.62.83.53.02.82.72.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductAndServiceOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value144921419214180141391323087138708858384268277818980667931780677577629
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.671.869.773.474.978.473.377.676.774.771.674.475.074.772.176.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.671.869.773.474.978.473.377.676.774.771.674.475.074.772.176.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:BusinessAcquisition

tmus:WirelineServiceRevenue, tmus:SprintCorporation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value187197202213211
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.01.11.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.01.11.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax tmus:WirelineServiceRevenue tmus:SprintCorporation100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value199501975920341192721767111113118781106110979110801144510839105711045510759100191021396131017592469222859982477849817977788154735071856875682766886228467749094893488350341238120512091194106510201012970
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value482348054758487656043688365634983543344234983314318531643291309829152955295928982772274927552624243823722333228321512096209619331847194189163167176157162154169155147158159
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.224.323.425.331.733.230.831.632.331.130.630.630.130.330.630.928.530.729.131.330.132.033.433.429.830.528.631.129.930.530.728.929.74.23.93.33.43.512.713.512.814.214.614.415.716.5

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2041242033322001621924431871998722686921861098478883073724687018269692720047056367923671596804865891642726396863063624365847357188565585665355115516645016949953457674473413662101891007197299509948292799101864879187386
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2041242033322001621924431871998722686921861098478883073724687018269692720047056367923671596804865891642726396863063624365847357188565585665355115516645016949953457674473413662101891007197299509948292799101864879187386
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value6747066377653446448762996289772878927771269672618124718243552339022876225592027719614189631823617853173951710416557162521605315650156631452514563141561424512415123593391335833223116295729272825274926322541228820341848
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.132.632.633.533.733.233.132.331.831.534.134.733.631.832.029.929.227.927.727.827.227.126.527.828.127.727.626.428.228.228.527.127.624.833.033.032.031.130.930.430.230.432.131.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-1510.0-1545.0-1581.0-1621.0-1658.0-1660.0-868.0-1070.0-813.0-521.0-332.00.00.05.08.01.0-1.01.03.02.02.0-9.602-9.295-1.415-11.34-32.533-14.469
Percentage of StockholdersEquity-2.2-2.3-2.4-2.5-2.6-5.7-3.0-3.9-3.0-2.0-1.30.00.00.00.00.0-0.00.00.00.00.0-0.3-0.3-0.1-0.5-1.6-0.8
Percentage of Assets-0.7-0.8-0.8-0.8-0.9-1.9-1.0-1.2-1.0-0.6-0.50.00.00.00.00.0-0.00.00.00.00.0-0.1-0.1-0.0-0.20.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value72919728397277272705725053859738498384333824238100380103795637786380573862938846386663850337330182617841686163415781524
Percentage of StockholdersEquity108.1109.7111.4112.7115.1133.2133.7138.4141.8145.5153.8155.8161.5166.4171.2213.0233.5245.8262.154.460.966.471.477.682.5
Percentage of Assets35.735.836.437.838.744.244.344.645.145.952.554.154.252.954.759.061.968.074.717.918.821.322.10.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-3925.0-4903.0-5836.0-6586.0-7839.0-7949.0-8833.0-9584.0-10454.0-11393.0-12954.0-13594.0-14389.0-15179.0-16074.0-20610.0-22108.0-22841.0-23088.0-23068.0-23032.015531159858664487338
Percentage of StockholdersEquity-5.8-7.4-8.9-10.2-12.4-27.4-30.7-34.5-38.8-43.5-52.4-55.8-61.5-66.4-71.3-113.0-133.5-145.8-162.1-185.8-186.446.339.633.829.024.018.3
Percentage of Assets-1.9-2.4-2.9-3.4-4.2-9.1-10.2-11.1-12.3-13.7-17.9-19.4-20.6-21.1-22.8-31.3-35.4-40.3-46.2-50.4-51.515.212.210.89.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-14.0-14.0-11.0-11.0-12.0-11.0-8.0-8.0-8.0-5.0-6.0-7.0-7.0-7.0-4.0-1.00.00.00.0-11.1626.832-1.9140.00.00.0
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.0-0.30.2-0.10.00.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.0-0.10.1-0.00.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value20570187792388519465243219487930584588114874582817286709196098915744967801589914217135301428013344148901265611657116351398413295989612957122287964731367723187318428952767274325492568222915931491
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.19.211.910.113.010.910.79.89.610.511.410.410.213.312.611.010.123.421.621.122.321.223.821.620.420.624.724.119.225.824.517.416.349.631.331.629.829.128.927.528.225.820.120.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value77936677103856571110761112152816531105143912033292152527121973918175015500535255383647458226332642303253155787308054715891236523622701236820571901188619431840185513217968897769149296971470
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.83.35.23.45.91.31.81.91.31.71.70.50.33.51.71.10.311.08.38.38.75.87.34.54.65.49.410.56.010.911.85.25.319.823.220.419.519.820.519.820.415.310.10.00.00.012.60.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value7878675910463665711161111215281653110514391203329215252712195500
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.93.35.23.56.01.31.81.91.31.71.70.50.33.51.78.3

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-03-312010-12-312009-12-31
Value4528359242544313335518361888182218171749176916521630168919151734171918511896188518661880178818101827193318654433393935603619337030002678565851
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.21.82.12.21.82.12.22.12.12.12.42.42.32.32.72.62.62.72.92.92.93.02.93.13.23.43.38.07.67.17.27.46.726.30.70.70.7

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value170722092527193115491225964801998126110849589981311156699912081021111110391388144312951236113512301085674791676586761819457
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.81.11.31.00.81.41.10.91.21.51.51.41.41.82.21.51.81.51.71.62.22.32.12.12.02.21.91.21.51.31.21.71.84.5

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1642177024962889258628822305173717301814167619691929178819031817158014061537133614151263181318901019106315931369117990512526765987069522235444249586328
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.91.21.51.43.32.72.02.02.22.32.82.82.52.72.72.42.12.32.12.22.02.93.21.81.92.82.52.31.82.51.51.30.50.70.50.20.40.50.50.50.70.80.4

us-gaap:OtherAssetsCurrent us-gaap:ConsolidatedEntities, us-gaap:TransactionType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Other
Period End2021-06-302021-03-312020-12-312019-12-31
Value202268378350
Percentage of OtherAssetsCurrent12.315.115.115.2
Percentage of Assets0.10.10.20.4
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary tmus:FactoringArrangement0.00.00.00.0

us-gaap:OtherAssetsCurrent us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Other
Period End2020-09-302019-12-31
Value386350
Percentage of OtherAssetsCurrent13.415.2
Percentage of Assets0.20.4
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary tmus:FactoringArrangement0.00.0

us-gaap:OtherAssetsCurrent us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value638658766739735688694660
Percentage of OtherAssetsCurrent38.937.230.725.628.423.930.139.4
Percentage of Assets0.30.30.40.40.40.80.80.9
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary tmus:FactoringandEIPSecuritizationArrangement0.00.00.00.00.00.00.00.0

us-gaap:OtherAssetsCurrent us-gaap:TransactionType

tmus:EIPSecuritizationArrangement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value4363903883533833353443473403273214053943704033573493483713503131541640.0
Percentage of OtherAssetsCurrent26.622.015.512.214.811.614.920.019.718.019.220.620.420.721.219.622.124.824.126.222.112.29.00.0
Percentage of Assets0.20.20.20.20.20.40.40.40.40.40.40.60.60.50.60.50.50.50.60.50.50.20.30.0
Percentage of Assets tmus:EIPSecuritizationArrangement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentGross

tmus:BuildingsandEquipment


Property
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4006387235542587242320661657190019481862
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.02.01.93.03.32.92.53.03.43.7
Percentage of Assets tmus:BuildingsandEquipment0.00.00.00.00.00.00.00.00.00.0

tmus:WirelessCommunicationsSystems


Property
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value49453456664387634353352823270629272270632563324594
Percentage of PropertyPlantAndEquipmentGross1234.51179.41234.61327.91456.11583.11766.61424.41315.91320.8
Percentage of Assets24.723.723.439.548.746.444.443.345.249.2
Percentage of Assets tmus:WirelessCommunicationsSystems0.00.00.00.00.00.00.00.00.00.0

us-gaap:AssetsLeasedToOthers


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6989743676051223113911641209262422360.0
Percentage of PropertyPlantAndEquipmentGross174.5192.0214.00.044.048.058.5158.4117.70.0
Percentage of Assets3.53.94.11.41.31.61.74.03.60.0
Percentage of Assets us-gaap:AssetsLeasedToOthers0.00.00.00.00.00.00.00.00.00.0

us-gaap:ComputerSoftwareIntangibleAsset


Property
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302012-12-31
Value1641215703150201270511712105638488852475936424619857535078
Percentage of PropertyPlantAndEquipmentGross409.7405.6422.6491.1483.4511.3512.3448.6389.8345.00.00.00.0
Percentage of Assets8.28.28.014.616.215.012.913.713.412.913.512.949.8
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-31
Value459541803933297327761771261324661874114716031992464354425
Percentage of PropertyPlantAndEquipmentGross114.7108.0110.7114.9114.685.7157.7129.896.261.60.00.00.00.00.0
Percentage of Assets2.32.22.13.43.82.54.03.93.32.33.54.54.63.75.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312020-09-302020-06-302019-12-31
Value2362362360.0
Percentage of PropertyPlantAndEquipmentGross5.96.16.60.0
Percentage of Assets0.10.10.10.0
Percentage of Assets us-gaap:Land0.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value18791750166613451299118210681003988971606057
Percentage of PropertyPlantAndEquipmentGross46.945.246.952.053.657.264.552.850.752.10.00.00.0
Percentage of Assets0.90.90.91.51.81.71.61.61.71.90.60.60.7
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-31
Value423954027637089331183129727301247792319221791214102113720282196491932018787251119301409
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.220.919.838.143.238.737.637.138.538.840.940.439.342.242.024.620.417.8

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetsLeasedToOthers


Accumulated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value21701648984404407
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment5.14.12.70.01.2
Percentage of Assets1.10.90.50.50.5
Percentage of Assets us-gaap:AssetsLeasedToOthers0.00.00.00.00.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value29536640638338725291818
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value39752405494117538567388012214921984220982184721464233592250222375223082219621570214232123520943205742057020625200001810116910164831624515798155371542715349153701518541774292419740694007401740093856373836593252
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.519.920.620.020.725.425.325.725.825.832.232.132.131.031.531.831.931.231.832.032.232.732.031.029.629.128.728.730.130.830.733.633.930.642.141.741.842.142.443.242.443.246.244.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetsLeasedToOthers


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value481957886621819732543
Percentage of PropertyPlantAndEquipmentNet11.715.017.13.73.32.5
Percentage of Assets2.43.03.50.90.80.6
Percentage of Assets us-gaap:AssetsLeasedToOthers0.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-31
Value111521115811117109061091019301930193019011901190119011901190116831683168316831683168316831683168316831683168316831683168316831683168316830.08134
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0
Percentage of Assets5.55.55.65.75.82.22.22.22.22.32.62.72.72.62.42.52.52.52.62.62.62.72.72.92.93.03.03.13.33.43.43.73.80.085.8

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:LicensingAgreements


Indefinite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value82917829018282882891828703646536442364303555935553355323550435366350073506027150270142395521955278472495223251
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.640.841.443.144.342.042.343.049.150.751.049.350.151.552.239.941.038.438.855.7244.9245.2
Percentage of Assets us-gaap:LicensingAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value46004892529856606038911151441571741982292602912172562963383764314865415946627358058709561040112312041297139079
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.42.62.93.20.10.10.20.20.20.30.30.40.40.30.40.40.50.60.70.80.91.01.11.31.41.51.72.02.22.42.83.10.8

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

tmus:FavorableSpectrumLeases


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value6876977557677780.0
Percentage of FiniteLivedIntangibleAssetsNet14.914.214.313.612.90.0
Percentage of Assets0.30.30.40.40.40.0
Percentage of Assets tmus:FavorableSpectrumLeases0.00.00.00.00.00.0

tmus:TrademarksandPatents


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1201421862312756587115147185217254
Percentage of FiniteLivedIntangibleAssetsNet2.62.93.54.14.656.543.953.039.131.124.921.1
Percentage of Assets0.10.10.10.10.10.10.10.20.20.30.40.5
Percentage of Assets tmus:TrademarksandPatents0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerLists


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value350537504035432346120.018882103856138942.0
Percentage of FiniteLivedIntangibleAssetsNet76.276.776.276.476.40.09.140.655.964.870.574.32.5
Percentage of Assets1.71.82.02.22.50.00.00.10.30.61.11.80.0
Percentage of Assets us-gaap:CustomerLists0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2883033223393735093141924405630
Percentage of FiniteLivedIntangibleAssetsNet6.36.26.16.06.243.547.06.55.14.04.64.738.0
Percentage of Assets0.10.10.20.20.20.10.10.00.00.00.10.10.3
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet us-gaap:BusinessAcquisition

us-gaap:DeferredTaxAssetsLiabilitiesNet

tmus:SprintCorporation


Deferred
Period End2021-03-312020-04-01
Value8511100
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0
Percentage of Assets0.40.0
Percentage of Assets tmus:SprintCorporation0.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value27511277932802127999172461095610933109141043995090.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets13.513.714.014.59.212.612.612.712.311.40.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:CounterpartyName

tmus:AmericanTowerCorporation


Operating
Period End2020-09-14
Value11000
Percentage of OperatingLeaseRightOfUseAsset0.0
Percentage of Assets0.0
Percentage of Assets tmus:AmericanTowerCorporation0.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value12266121402779251923262026189117991707166116231488131111579128588157686746255824714673513203072881694168015961367948661141141123194184173173126120123150
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.01.41.31.22.32.22.12.02.02.22.11.91.61.31.31.21.11.01.00.90.70.70.60.60.50.53.13.33.22.72.11.51.01.41.22.01.91.81.91.41.41.62.0

us-gaap:OtherAssetsNoncurrent us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value133113120109107928988
Percentage of OtherAssetsNoncurrent1.10.94.34.34.64.54.75.4
Percentage of Assets0.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary tmus:FactoringandEIPSecuritizationArrangement0.00.00.00.00.00.00.00.0

us-gaap:OtherAssetsNoncurrent us-gaap:TransactionType

tmus:EIPSecuritizationArrangement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1331131201091079289857471889899931099010610483739842440.0
Percentage of OtherAssetsNoncurrent1.10.94.34.34.64.54.74.74.34.35.46.67.68.012.010.513.013.512.311.716.88.99.40.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.10.20.20.10.10.20.10.10.0
Percentage of Assets tmus:EIPSecuritizationArrangement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-03-312010-12-312009-12-31
Value84118712101968389934860036746640672607330774165006686715785286071622561607152614669857431808474746645679373646057555547924567432443053475609521558
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.14.35.14.45.06.97.87.48.68.810.79.39.69.912.18.99.39.110.99.610.911.812.912.811.612.013.011.010.89.69.19.49.634.17.06.67.6

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Accounts
Period End2020-09-302019-12-31
Value6525
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent0.80.4
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary tmus:FactoringArrangement0.00.0

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Accounts
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value650.0542559
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent0.80.00.90.40.8
Percentage of Assets0.00.00.10.00.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary tmus:FactoringandEIPSecuritizationArrangement0.00.00.00.00.0

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-01-012017-12-31
Value939972103010781185619631608620665698696722783779
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.60.60.70.70.70.70.81.01.01.00.01.1

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value218371949521703198402319114756125061286913173133271026785729281123571151581038828152859022811987529369952888438264864987768605713161105808551453983189847784741778816779725903802797
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.79.610.810.312.416.914.414.915.516.014.212.213.317.216.311.913.122.513.712.613.714.915.315.114.515.315.515.613.812.211.612.012.123.38.37.87.68.28.68.48.010.410.110.8

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2020-12-312019-12-312018-12-312017-06-302017-03-312016-12-31
Value4579258415227542354
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets2.30.01.20.811.10.5

us-gaap:LongTermDebtCurrent us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:ShortTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-09-302017-12-31
Value46484423457937133818257831612
Percentage of LongTermDebtCurrent0.00.0100.00.00.0100.00.00.0
Percentage of Assets2.32.22.31.92.00.01.12.3
Percentage of Assets tmus:ThirdParty us-gaap:ShortTermDebt0.00.00.00.00.00.00.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value35773498386836584164218722872232226822020.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.81.71.91.92.22.52.62.62.72.70.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302013-12-312013-03-312012-12-312012-09-302011-12-31
Value3963824076234821791352889310914221610711171213
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.30.30.20.20.40.10.20.30.40.20.10.20.10.1

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value87776981018171669280116731883156411297873673593534143963953934053553704254104105585896356136213993532431982371663029252629253432
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.90.93.21.92.21.81.41.10.50.50.50.60.60.60.60.60.60.60.70.70.71.01.01.11.11.20.80.70.50.40.20.70.70.30.30.30.30.30.30.40.4

us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities, us-gaap:TransactionType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Other
Period End2021-06-302021-03-312020-12-312019-12-31
Value313248357342
Percentage of OtherLiabilitiesCurrent35.732.244.120.4
Percentage of Assets0.20.10.20.4
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary tmus:FactoringArrangement0.00.00.00.0

us-gaap:OtherLiabilitiesCurrent us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Other
Period End2020-09-302019-12-31
Value371342
Percentage of OtherLiabilitiesCurrent20.420.4
Percentage of Assets0.20.4
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary tmus:FactoringArrangement0.00.0

us-gaap:OtherLiabilitiesCurrent us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value313248357371360355342149
Percentage of OtherLiabilitiesCurrent35.732.244.120.421.612.720.418.9
Percentage of Assets0.20.10.20.20.20.40.40.2
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary tmus:FactoringandEIPSecuritizationArrangement0.00.00.00.00.00.00.00.0

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value1148171174601131151081161010124349345626454694464843565374833725537021367713648939543387173380038633383003782136590363513337832871322593221431985299702990329900278382697721915
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.257.856.556.254.049.952.552.852.752.451.753.153.151.151.758.257.649.758.659.659.158.058.257.157.557.056.958.058.059.659.960.860.3215.1

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-312019-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312013-09-302013-06-302011-09-302011-06-302010-12-31
Value7112524969273572797030478283192830728494302472778667786293474347463779
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.528.739.040.142.340.141.742.444.442.214.814.151.152.247.7

us-gaap:LongTermDebt us-gaap:BusinessAcquisition

tmus:SprintCorporation


Long
Period End2020-12-312020-09-302020-06-30
Value267402715529035
Percentage of LongTermDebt37.60.00.0
Percentage of Assets13.414.115.5
Percentage of Assets tmus:SprintCorporation0.00.00.0

us-gaap:LongTermDebt us-gaap:BusinessAcquisition, us-gaap:DebtInstrument

tmus:SprintCorporation, tmus:DebtOther


Long
Period End2020-12-312020-09-302020-06-30
Value240312353
Percentage of LongTermDebt0.30.00.0
Percentage of Assets0.10.20.2
Percentage of Assets tmus:SprintCorporation tmus:DebtOther0.00.00.0

us-gaap:LongTermDebt us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:SprintCorporation, tmus:SeniorNotesDue202111500, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value105710741090
Percentage of LongTermDebt1.50.00.0
Percentage of Assets0.50.60.6
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue202111500 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20217250, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value228723002312
Percentage of LongTermDebt3.20.00.0
Percentage of Assets1.11.21.2
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20217250 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20226000, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value234623552363
Percentage of LongTermDebt3.30.00.0
Percentage of Assets1.21.21.3
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20226000 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20237875, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value459446244653
Percentage of LongTermDebt6.50.00.0
Percentage of Assets2.32.42.5
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20237875 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20247125, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value270627202733
Percentage of LongTermDebt3.80.00.0
Percentage of Assets1.41.41.5
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20247125 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20257625, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value165216611669
Percentage of LongTermDebt2.30.00.0
Percentage of Assets0.80.90.9
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20257625 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20267625, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value167916871694
Percentage of LongTermDebt2.40.00.0
Percentage of Assets0.80.90.9
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20267625 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20286875, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value280828172826
Percentage of LongTermDebt3.90.00.0
Percentage of Assets1.41.51.5
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20286875 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorNotesDue20328750, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value262026302640
Percentage of LongTermDebt3.70.00.0
Percentage of Assets1.31.41.4
Percentage of Assets tmus:SprintCorporation tmus:SeniorNotesDue20328750 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorSecuredSeries20161A1NotesDue20213360, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value6568741092
Percentage of LongTermDebt0.90.00.0
Percentage of Assets0.30.50.6
Percentage of Assets tmus:SprintCorporation tmus:SeniorSecuredSeries20161A1NotesDue20213360 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorSecuredSeries20181A1NotesDue20254738, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value214521482150
Percentage of LongTermDebt3.00.00.0
Percentage of Assets1.11.11.1
Percentage of Assets tmus:SprintCorporation tmus:SeniorSecuredSeries20181A1NotesDue20254738 us-gaap:SeniorNotes0.00.00.0

tmus:SprintCorporation, tmus:SeniorSecuredSeries20181A2NotesDue20285152, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-30
Value195019531957
Percentage of LongTermDebt2.70.00.0
Percentage of Assets1.01.01.0
Percentage of Assets tmus:SprintCorporation tmus:SeniorSecuredSeries20181A2NotesDue20285152 us-gaap:SeniorNotes0.00.00.0

us-gaap:LongTermDebt us-gaap:DebtInstrument

tmus:TotalDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value752707553971125667697254224969
Percentage of LongTermDebt0.00.0100.00.00.0100.0
Percentage of Assets36.937.235.534.738.828.7
Percentage of Assets tmus:TotalDebt0.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

tmus:A6.375SeniorNotesdue2025, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Long
Period End2020-08-31
Value1700
Percentage of LongTermDebt0.0
Percentage of Assets0.0
Percentage of Assets tmus:A6.375SeniorNotesdue2025 us-gaap:SeniorNotes us-gaap:SubsequentEvent0.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value65897663956183058345627831095910958109561095410952121241199312065121271212113163132061310521832218252157420505204841644216386162611627316284143691433114345676162760.0
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets32.332.730.930.333.512.612.612.712.913.216.717.117.316.817.219.419.719.333.134.033.732.532.828.128.728.828.729.527.828.628.714.814.00.0

us-gaap:LongTermDebtNoncurrent us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-09-302017-12-31
Value6589766395618305834562783109581199312121
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.332.730.930.333.512.617.117.2
Percentage of Assets tmus:ThirdParty us-gaap:LongTermDebt0.00.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-01-012017-12-31
Value103911015499661037399965618560752965090492544724370408736103537
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.15.05.05.45.36.46.56.26.05.96.26.25.90.05.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value522952985412357734949599549369138969679859689339359679711004102610071038104710677956426546165585056717016326369090919190909280737281
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.62.71.91.91.11.11.11.11.11.31.41.41.31.31.41.41.51.61.61.61.71.71.41.11.21.11.01.01.31.41.41.40.70.90.90.91.01.01.00.90.90.91.1

us-gaap:OtherLiabilitiesNoncurrent us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4.04.04.08.03.08.01822
Percentage of OtherLiabilitiesNoncurrent0.10.10.10.20.10.81.92.3
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary tmus:FactoringandEIPSecuritizationArrangement0.00.00.00.00.00.00.00.0

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value26515266022671926658154871046410539106141014593390.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets13.013.113.313.98.312.012.112.312.011.20.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value305873031619651128261284612413115410.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets15.315.810.514.814.914.613.90.0

us-gaap:OperatingLeaseLiability us-gaap:CounterpartyName

tmus:AmericanTowerCorporation


Operating
Period End2020-09-14
Value11000
Percentage of OperatingLeaseLiability0.0
Percentage of Assets0.0
Percentage of Assets tmus:AmericanTowerCorporation0.0

tmus:CrownCastleInternationalCorp.


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value282282282285292
Percentage of OperatingLeaseLiability0.00.00.90.91.5
Percentage of Assets0.10.10.10.10.2
Percentage of Assets tmus:CrownCastleInternationalCorp.0.00.00.00.00.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-312020-09-30
Value75157786
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0
Percentage of Assets3.84.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value6747066377653446448762996289772878927771269672618124718243552339022876225592027719614189631823617853173951710416557162521605315650156631452514563141561424512415123593391335833223116295729272825274926322541228820341848
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.132.632.633.533.733.233.132.331.831.534.134.733.631.832.029.929.227.927.727.827.227.126.527.828.127.727.626.428.228.228.527.127.624.833.033.032.031.130.930.430.230.432.131.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-1510.0-1545.0-1581.0-1621.0-1658.0-1660.0-868.0-1070.0-813.0-521.0-332.00.00.05.08.01.0-1.01.03.02.02.0-9.602-9.295-1.415-11.34-32.533-14.469
Percentage of StockholdersEquity-2.2-2.3-2.4-2.5-2.6-5.7-3.0-3.9-3.0-2.0-1.30.00.00.00.00.0-0.00.00.00.00.0-0.3-0.3-0.1-0.5-1.6-0.8
Percentage of Assets-0.7-0.8-0.8-0.8-0.9-1.9-1.0-1.2-1.0-0.6-0.50.00.00.00.00.0-0.00.00.00.00.0-0.1-0.1-0.0-0.20.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value72919728397277272705725053859738498384333824238100380103795637786380573862938846386663850337330182617841686163415781524
Percentage of StockholdersEquity108.1109.7111.4112.7115.1133.2133.7138.4141.8145.5153.8155.8161.5166.4171.2213.0233.5245.8262.154.460.966.471.477.682.5
Percentage of Assets35.735.836.437.838.744.244.344.645.145.952.554.154.252.954.759.061.968.074.717.918.821.322.10.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-3925.0-4903.0-5836.0-6586.0-7839.0-7949.0-8833.0-9584.0-10454.0-11393.0-12954.0-13594.0-14389.0-15179.0-16074.0-20610.0-22108.0-22841.0-23088.0-23068.0-23032.015531159858664487338
Percentage of StockholdersEquity-5.8-7.4-8.9-10.2-12.4-27.4-30.7-34.5-38.8-43.5-52.4-55.8-61.5-66.4-71.3-113.0-133.5-145.8-162.1-185.8-186.446.339.633.829.024.018.3
Percentage of Assets-1.9-2.4-2.9-3.4-4.2-9.1-10.2-11.1-12.3-13.7-17.9-19.4-20.6-21.1-22.8-31.3-35.4-40.3-46.2-50.4-51.515.212.210.89.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-14.0-14.0-11.0-11.0-12.0-11.0-8.0-8.0-8.0-5.0-6.0-7.0-7.0-7.0-4.0-1.00.00.00.0-11.1626.832-1.9140.00.00.0
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.0-0.30.2-0.10.00.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.0-0.10.1-0.00.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value72919728397277272705725053859738498384333824238100380103795637786380573862939058389463887738846388533876338700386663865838595385533850337466374113739537330354813538929197
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.735.836.437.838.744.244.344.645.145.952.554.154.252.954.757.558.057.159.060.560.661.461.966.167.568.268.068.072.474.574.777.579.1286.5

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-3925.0-4903.0-5836.0-6586.0-7839.0-7949.0-8833.0-9584.0-10454.0-11393.0-12954.0-13594.0-14389.0-15179.0-16074.0-18781.0-19331.0-19912.0-20610.0-21000.0-21366.0-21591.0-22108.0-22405.0-22543.0-22904.0-22841.0-22942.0-22848.0-23239.0-23088.0-23068.0-23032.01572155315211329118011591068998914858664
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-1.9-2.4-2.9-3.4-4.2-9.1-10.2-11.1-12.3-13.7-17.9-19.4-20.6-21.1-22.8-27.7-28.8-29.3-31.3-32.7-33.4-34.2-35.4-38.3-39.4-40.5-40.3-41.6-44.2-46.3-46.2-50.4-51.511.515.215.113.712.412.211.511.010.610.89.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-1510.0-1545.0-1581.0-1621.0-1658.0-1660.0-868.0-1070.0-813.0-521.0-332.00.00.05.08.04.03.02.01.01.0-1.0-4.0-1.0-1.01.01.01.01.00.00.03.02.02.0-7.571-9.602-4.625-8.586-9.549-9.295-12.947-7.5822.058-1.415-11.34
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.7-0.8-0.8-0.8-0.9-1.9-1.0-1.2-1.0-0.6-0.50.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.00.00.00.00.00.00.00.00.00.0-0.1-0.1-0.0-0.1-0.1-0.1-0.1-0.10.0-0.0-0.2

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk

us-gaap:InterestRateContract


Accumulated
Period End2021-06-302021-03-312020-12-31
Value-1500.0-1600.0-1600.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax99.3103.6101.2
Percentage of Assets-0.7-0.8-0.8
Percentage of Assets us-gaap:InterestRateContract0.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1414111112118.08.08.05.06.07.07.07.04.04.04.04.01.01.01.01.00.00.00.00.00.00.00.00.00.00.00.01311109.348.7196.8326.2735.5044.371.9140.0
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.00.0

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2020-12-312020-09-302020-06-30
Value0.0255017216
Percentage of StockIssuedDuringPeriodValueNewIssues0.0100.0100.0
Percentage of Assets0.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-12-312020-09-302020-06-30
Value0.0255017216
Percentage of StockIssuedDuringPeriodValueNewIssues0.0100.0100.0
Percentage of Assets0.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-12-312013-09-30
Value1501541491772721521131401431211121271261084648
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value150154149177272152113140143121112127126108
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3779366134742772777161715371748214713929549141261770205823621829171316021740176810252233153111614891355106297075910048261491223332391319136308271343138315341112225
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.918.517.114.44.414.612.915.819.612.68.38.411.97.419.123.617.917.815.718.819.211.927.119.514.26.316.614.413.511.014.712.423.94.86.88.06.52.724.922.528.411.629.633.511.123.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2083.0-11239.0-3647.0-1132.0-6356.0-1580.0-887.0-657.0-1615.0-966.0231-42.0-306.0-462.0-926.0-1455.0-7133.0-1550.0-1294.0-1859.0-667.0-1860.0-4322.0-1209.0-1337.0-2692.0-1806.0-1165.0-3310.0-965.0-1224.0-1130.03631-3369.937-5.68-207.421-327.439-182.89-186.863-295.743-235.529-168.736319-867.178-217.441-185.03
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.4-56.9-17.9-5.9-36.0-14.2-7.5-5.9-14.7-8.72.0-0.4-2.9-4.4-8.6-14.5-69.8-16.1-12.7-20.1-7.2-21.6-52.4-15.4-16.3-34.6-22.1-15.9-46.1-14.0-17.9-16.958.3-72.1-0.1-4.2-6.7-3.6-15.1-24.5-19.5-14.130.0-85.0-21.5-19.1

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-577.038743979-6144.015628-453.0-775.0-543.0-866.0-190.0-311.0-758.0-3267.01000-652.0-349.0-2016.01838-160.0-67.0790-100.04038-331.0-214.0-80.0-21.02810-51.0-214.03746307-3488.4653479-16.34-28.30622-11.058-18.7648.95426555-727.593638-33.012-54.809
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.919.619.6-31.988.4-4.1-6.5-4.9-7.9-1.7-2.7-7.0-30.99.6-6.1-3.5-19.719.1-1.6-0.78.6-1.249.0-4.2-2.6-1.0-0.338.2-0.7-3.154.94.6-56.074.4-0.3-0.60.5-0.2-1.50.735.246.5-68.362.5-3.3-5.6

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1119-3704.03806-4504.010049-416.0-125.0548-334.0236874114-2312.01308
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.6-18.718.7-23.456.9-3.7-1.15.0-3.02.17.61.1-21.912.5

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2262117933598310242294267288218284272206-1999.0347345-97.0291219140264174134-2.0-50.01125849214553749321.373485114
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value407742894219415040641718177616551585160016401637163415751485141615191564154815681575155213691157107510871090113811291055997987888173172163153152136139134128118113109107
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312011-03-312010-03-31
Value1839-96.0489153849874810167458051143137012381136873278119-21.06814115510520210348-62.0170-1.251.274
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-584.0-279.060954955351147836-162.0265244115-125.0-33.0816-113.0185-44.0305-301.0-3.08011522915-87.0145-4.285-53.476536.85312926.954-145.80112434-69.16177-29.807
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3779366134742772777161715371748214713929549141261770205823621829171316021740176810252233153111614891355106297075910048261491223332391319136308271343138315341112225
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.918.517.114.44.414.612.915.819.612.68.38.411.97.419.123.617.917.815.718.819.211.927.119.514.26.316.614.413.511.014.712.423.94.86.88.06.52.724.922.528.411.629.633.511.123.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value97893375012531109517518709399086407957826712707550581698390366225479297138361-63.0101-94.0391-151.0-20.0-36.0-16.01931192148219169845613777922
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.94.73.76.50.68.66.37.98.68.25.67.37.46.425.25.55.77.33.84.02.45.63.61.84.4-0.81.2-1.35.4-2.2-0.3-0.5-0.30.40.63.93.00.47.45.87.04.71.37.67.92.3

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-12-312013-09-30
Value9789337501253110951751870939908640795782671-20.0-36.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.94.73.76.50.68.66.37.98.68.25.67.37.46.4-0.3-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value134138136161259138129126130110100115112978582726764596052484256559.5739.2189.2579.343109.6499.898101111111111
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2083.0-11239.0-3647.0-1132.0-6356.0-1580.0-887.0-657.0-1615.0-966.0231-42.0-306.0-462.0-926.0-1455.0-7133.0-1550.0-1294.0-1859.0-667.0-1860.0-4322.0-1209.0-1337.0-2692.0-1806.0-1165.0-3310.0-965.0-1224.0-1130.03631-3369.937-5.68-207.421-327.439-182.89-186.863-295.743-235.529-168.736319-867.178-217.441-185.03
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.4-56.9-17.9-5.9-36.0-14.2-7.5-5.9-14.7-8.72.0-0.4-2.9-4.4-8.6-14.5-69.8-16.1-12.7-20.1-7.2-21.6-52.4-15.4-16.3-34.6-22.1-15.9-46.1-14.0-17.9-16.958.3-72.1-0.1-4.2-6.7-3.6-15.1-24.5-19.5-14.130.0-85.0-21.5-19.1

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value327031833807321722571753115715141789193111841362162913669211441134715288591159134913351431112011919821299113194094788210171971154257262182144190248264187242232176139
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-577.038743979-6144.015628-453.0-775.0-543.0-866.0-190.0-311.0-758.0-3267.01000-652.0-349.0-2016.01838-160.0-67.0790-100.04038-331.0-214.0-80.0-21.02810-51.0-214.03746307-3488.4653479-16.34-28.30622-11.058-18.7648.95426555-727.593638-33.012-54.809
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.919.619.6-31.988.4-4.1-6.5-4.9-7.9-1.7-2.7-7.0-30.99.6-6.1-3.5-19.719.1-1.6-0.78.6-1.249.0-4.2-2.6-1.0-0.338.2-0.7-3.154.94.6-56.074.4-0.3-0.60.5-0.2-1.50.735.246.5-68.362.5-3.3-5.6

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value3006676386430.0266940.00.00.00.00.00.00.024940.0500448554950.00.09970.039790.00.00.019960.0
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.00.0100.00.00.00.00.00.00.00.0100.00.0100.0100.0100.00.00.0100.00.0100.00.00.00.0100.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3150221942095678105290.00.06000.00.00.023509990.00.0675034805.05.05.05.00.00.00.00.06.3476.3486.3476.3486.3476.3476.3476.3485.254.04.04.04.0
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.00.00.0100.00.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLongTermDebt us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:LongTermDebt


Repayments
Period End2020-09-30
Value0.0
Percentage of RepaymentsOfLongTermDebt0.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.02546169900.00.00.00.00.00.04056664270.00.00.02.2190.9570.8650.621.8880.5590.7681.1352.4560.3280.7340.2260.626
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.0100.00.00.00.00.00.00.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

tmus:PredecessorPlans


Share
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value51.7752.5153.5213.814.5816.3631.7530.524.9624.64
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value99665607447235374938406138853806167715761149
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value162075990372834303877424139294176649766512
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value11595144624124104113881783.3116.0846.0846.08419
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefits us-gaap:BusinessAcquisition

tmus:SprintCorporation


Unrecognized
Period End2021-03-312020-04-01
Value660540
Percentage of UnrecognizedTaxBenefits0.00.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value878129210273573583614537274747
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:AdjustmentToAdditionalPaidInCapitalPurchasePriceConsideration

tmus:AdjustmentToAdditionalPaidInCapitalPurchasePriceConsideration


Adjustment
Period End2020-12-312020-09-302020-06-30
Value0.00.033533
Percentage of AdjustmentToAdditionalPaidInCapitalPurchasePriceConsideration0.00.0100.0

tmus:AdjustmentToAdditionalPaidInCapitalPurchasePriceConsideration us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustment
Period End2020-12-312020-09-302020-06-30
Value0.00.033533
Percentage of AdjustmentToAdditionalPaidInCapitalPurchasePriceConsideration0.00.0100.0

tmus:AdjustmentsToAdditionalPaidInCapitalExecutivePutOption

tmus:AdjustmentsToAdditionalPaidInCapitalExecutivePutOption


Adjustments
Period End2020-12-312020-09-302020-06-302020-03-31
Value0001000000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalExecutivePutOption0.00.00.0100.0

tmus:AdjustmentsToAdditionalPaidInCapitalExecutivePutOption us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2020-12-312020-09-302020-06-302020-03-31
Value0001000000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalExecutivePutOption0.00.00.0100.0

tmus:AssetRetirementObligationLiabilitiesAssumedInBusinessCombination

tmus:AssetRetirementObligationLiabilitiesAssumedInBusinessCombination


Asset
Period End2020-12-312020-09-30
Value480.0
Percentage of AssetRetirementObligationLiabilitiesAssumedInBusinessCombination100.00.0

tmus:BusinessAcquisitionProFormaIncomeLossFromDiscontinuedOperationsNetOfTax us-gaap:BusinessAcquisition

tmus:BusinessAcquisitionProFormaIncomeLossFromDiscontinuedOperationsNetOfTax

tmus:SprintCorporation


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.00.0320357355393423
Percentage of BusinessAcquisitionProFormaIncomeLossFromDiscontinuedOperationsNetOfTax0.00.0100.0100.0100.0100.0100.0

tmus:BusinessCombinationPurchaseAgreementPrice us-gaap:BusinessAcquisition

tmus:BusinessCombinationPurchaseAgreementPrice

tmus:ShenandoahPersonalCommunicationsCompany


Business
Period End2021-05-28
Value1900
Percentage of BusinessCombinationPurchaseAgreementPrice100.0

tmus:CashFlowsBetweenTransferorandTransfereenetcashproceedsduringtheperiod us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

tmus:CashFlowsBetweenTransferorandTransfereenetcashproceedsduringtheperiod

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-62.022-130.06.0-100.0-5.0
Percentage of CashFlowsBetweenTransferorandTransfereenetcashproceedsduringtheperiod100.0100.0100.0100.0100.0100.0

tmus:ChangeInCapitalExpendituresIncurredButNotYetPaid

tmus:ChangeInCapitalExpendituresIncurredButNotYetPaid


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value367173-1144.02163830129460113333-737.0-78.0386364-771.0141-8.0325-592.079101
Percentage of ChangeInCapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:DebtInstrumentRedemptionPremium us-gaap:DebtInstrument

tmus:DebtInstrumentRedemptionPremium

tmus:A6.500SeniorNotesdue2026


Debt
Period End2021-03-27
Value65
Percentage of DebtInstrumentRedemptionPremium100.0

tmus:DebtInstrumentRedemptionPremium us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:A6.375SeniorNotesdue2025, us-gaap:SeniorNotes


Debt
Period End2020-09-01
Value36
Percentage of DebtInstrumentRedemptionPremium0.0

tmus:A6.500SeniorNotesdue2024, us-gaap:SeniorNotes


Debt
Period End2020-07-04
Value22
Percentage of DebtInstrumentRedemptionPremium0.0

tmus:DepreciationExpenseforLeasedWirelessDevices

tmus:DepreciationExpenseforLeasedWirelessDevices


Depreciation
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value10001000947126108125
Percentage of DepreciationExpenseforLeasedWirelessDevices100.0100.0100.0100.0100.0100.0

tmus:DiscountRelatedtoRoamingExpenses us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:DiscountRelatedtoRoamingExpenses

srt:AffiliatedEntity


Discount
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.00.02.06.01.00.0
Percentage of DiscountRelatedtoRoamingExpenses0.00.0100.0100.0100.00.0

tmus:FinanceLeaseExpense

tmus:FinanceLeaseExpense


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value194203200165168167137133
Percentage of FinanceLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0

tmus:IncreaseDecreaseinOperatingLeaseLiability

tmus:IncreaseDecreaseinOperatingLeaseLiability


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-31
Value-1369000000.0-752000000.0-1145000000.0-1077000000.0-725000000.0-539000000.0-549000000.0-521000000.0-522000000.00
Percentage of IncreaseDecreaseinOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

tmus:IncreaseDecreaseinOperatingLeaseRightofUseAsset

tmus:IncreaseDecreaseinOperatingLeaseRightofUseAsset


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-31
Value-1272000000.0-1124000000.0-939000000.0-1062000000.0-937000000.0-527000000.0-501000000.0-491000000.0-469000000.0-435000000.00
Percentage of IncreaseDecreaseinOperatingLeaseRightofUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

tmus:IndefinitelivedIntangibleAssetsCoststoClearAssets us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

tmus:IndefinitelivedIntangibleAssetsCoststoClearAssets

us-gaap:LicensingAgreements


Indefinitelived
Period End2021-06-302021-03-312020-12-31
Value1.01.03.0
Percentage of IndefinitelivedIntangibleAssetsCoststoClearAssets100.0100.0100.0

tmus:IntangibleAssetAggregatePurchasePrice tmus:LicenseAuctionType, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

tmus:IntangibleAssetAggregatePurchasePrice

tmus:Auction107, us-gaap:LicensingAgreements


Intangible
Period End2021-03-31
Value9300
Percentage of IntangibleAssetAggregatePurchasePrice100.0

tmus:IntangibleAssetExpectedRemainingCost tmus:LicenseAuctionType, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

tmus:IntangibleAssetExpectedRemainingCost

tmus:Auction107, us-gaap:LicensingAgreements


Intangible
Period End2021-06-302021-03-31
Value0.01200
Percentage of IntangibleAssetExpectedRemainingCost0.0100.0

tmus:InternationalLongDistanceAgreement us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:InternationalLongDistanceAgreement

srt:AffiliatedEntity


International
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value12131110.09.011
Percentage of InternationalLongDistanceAgreement100.0100.0100.0100.0100.0100.0

tmus:MasterFrameworkAgreementProceedsReceivedToFacilitateStockTransaction us-gaap:StatementEquityComponents

tmus:MasterFrameworkAgreementProceedsReceivedToFacilitateStockTransaction

us-gaap:AdditionalPaidInCapital


Master
Period End2020-12-312020-09-30
Value0.04.0
Percentage of MasterFrameworkAgreementProceedsReceivedToFacilitateStockTransaction0.0100.0

tmus:NoncashOrPartNoncashAcquisitionConsideration

tmus:NoncashOrPartNoncashAcquisitionConsideration


Noncash
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.00.0335330.0
Percentage of NoncashOrPartNoncashAcquisitionConsideration0.00.0100.00.0

tmus:PaymentsforAssetAcquisitions dei:LegalEntity, us-gaap:CounterpartyName, tmus:AssetAcquisition

tmus:PaymentsforAssetAcquisitions

tmus:DISHNetworkCorporation, tmus:TMobileandSprintCorporation, tmus:PrepaidBusinessDivestedNetAssets


Paymentsfor
Period End2020-07-01
Value1200
Percentage of PaymentsforAssetAcquisitions100.0

tmus:PaymentsforAssetAcquisitions dei:LegalEntity, us-gaap:CounterpartyName, tmus:AssetAcquisition, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

tmus:DISHNetworkCorporation, tmus:TMobileandSprintCorporation, tmus:PrepaidBusiness, tmus:EIPReceivables


Paymentsfor
Period End2020-07-01
Value162
Percentage of PaymentsforAssetAcquisitions13.5

tmus:PriorYearRetainedEarnings

tmus:PriorYearRetainedEarnings


Prior
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1340.0-134.067-1306.00.0
Percentage of PriorYearRetainedEarnings100.00.0100.0100.0100.00.0

tmus:PriorYearRetainedEarnings us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Prior
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1340.0-134.067-1306.00.0
Percentage of PriorYearRetainedEarnings100.00.0100.0100.0100.00.0

tmus:ProceedsFromIssuanceAndOtherChangesInShortTermDebt us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ProceedsFromIssuanceAndOtherChangesInShortTermDebt

tmus:ThirdParty, us-gaap:ShortTermDebt


Proceeds
Period End2021-03-31
Value-26.0
Percentage of ProceedsFromIssuanceAndOtherChangesInShortTermDebt100.0

tmus:ProceedsFromSalesOfTowerSites

tmus:ProceedsFromSalesOfTowerSites


Proceeds
Period End2021-06-302019-12-31
Value3138
Percentage of ProceedsFromSalesOfTowerSites100.0100.0

tmus:ReceivableWithImputedInterestDiscountIncreaseDecrease

tmus:ReceivableWithImputedInterestDiscountIncreaseDecrease


Receivable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2566111505.05.0452.036539553495389427348
Percentage of ReceivableWithImputedInterestDiscountIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:ReceivableWithImputedInterestDiscountIncreaseDecrease us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

tmus:EquipmentInstallmentPlanReceivable


Receivable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2566111505.05.0452.03653955349538942734883205528-37.0-44.02.0-5.0
Percentage of ReceivableWithImputedInterestDiscountIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0

tmus:ReimbursementOfCommitmentLetterFees us-gaap:DebtInstrument, us-gaap:ShortTermDebtType

tmus:ReimbursementOfCommitmentLetterFees

tmus:SecuredBridgeLoanFacility, us-gaap:BridgeLoan


Reimbursement
Period End2020-12-312020-09-30
Value0.0-94.0
Percentage of ReimbursementOfCommitmentLetterFees0.0100.0

tmus:ReimbursementOfCommitmentLetterFees us-gaap:RelatedPartyTransactionsByRelatedParty

srt:AffiliatedEntity


Reimbursement
Period End2020-09-30
Value-36.0
Percentage of ReimbursementOfCommitmentLetterFees38.3

tmus:ReimbursementOfCommitmentLetterFees us-gaap:ShortTermDebtType

us-gaap:BridgeLoan


Reimbursement
Period End2020-12-312020-09-30
Value0.0-94.0
Percentage of ReimbursementOfCommitmentLetterFees0.0100.0

tmus:RelatedPartyTransactionReimbursementofExpensesfromTransactionswithRelatedParty us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:RelatedPartyTransactionReimbursementofExpensesfromTransactionswithRelatedParty

srt:AffiliatedEntity


Related
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value1.02.01.03.03.03.0
Percentage of RelatedPartyTransactionReimbursementofExpensesfromTransactionswithRelatedParty100.0100.0100.0100.0100.0100.0

tmus:RepaymentsOfDebtToThirdParties us-gaap:CounterpartyName, us-gaap:DebtInstrument

tmus:RepaymentsOfDebtToThirdParties

tmus:ThirdParty, tmus:TotalDebt


Repayments
Period End2021-06-302021-03-31
Value386274
Percentage of RepaymentsOfDebtToThirdParties100.0100.0

tmus:RepaymentsOfShortTermDebtForPurchasesOfInventoryPropertyAndEquipmentNet

tmus:RepaymentsOfShortTermDebtForPurchasesOfInventoryPropertyAndEquipmentNet


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value365574231151254753000.0
Percentage of RepaymentsOfShortTermDebtForPurchasesOfInventoryPropertyAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.00.0

tmus:SaleLeasebackInterestRate us-gaap:SaleLeasebackTransactionDescription

tmus:SaleLeasebackInterestRate

tmus:TowerTransaction


Sale
Period End2021-06-302021-03-312020-09-302020-06-30
Value06.06.00.06
Percentage of SaleLeasebackInterestRate0.0100.0100.0100.0

tmus:ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationGrantDateFairValue

tmus:ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationGrantDateFairValue


Share
Period End2020-12-31
Value0.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationGrantDateFairValue0.0

tmus:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice us-gaap:PlanName

tmus:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice

tmus:PredecessorPlans


Share
Period End2020-12-31
Value0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInAcquisitionWeightedAverageExercisePrice0.0

tmus:StockIssuedDuringPeriodValueDistributionFromNDQCPlan us-gaap:StatementEquityComponents

tmus:StockIssuedDuringPeriodValueDistributionFromNDQCPlan

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value-1000000.01000000.03000000.03000000.0-1000000.0
Percentage of StockIssuedDuringPeriodValueDistributionFromNDQCPlan100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Stock
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value1000000.0-1000000.0-3000000.0-3000000.01000000.0
Percentage of StockIssuedDuringPeriodValueDistributionFromNDQCPlan-100.0-100.0-100.0-100.0-100.0

tmus:StockIssuedDuringPeriodValueTransferOfRSUsFromNQDCPlan us-gaap:StatementEquityComponents

tmus:StockIssuedDuringPeriodValueTransferOfRSUsFromNQDCPlan

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-31
Value3000000.0
Percentage of StockIssuedDuringPeriodValueTransferOfRSUsFromNQDCPlan100.0

us-gaap:TreasuryStock


Stock
Period End2021-03-31
Value-3000000.0
Percentage of StockIssuedDuringPeriodValueTransferOfRSUsFromNQDCPlan-100.0

tmus:TransferRSUtoNQDCPlan us-gaap:StatementEquityComponents

tmus:TransferRSUtoNQDCPlan

us-gaap:AdditionalPaidInCapital


Transfer
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-1000000.01000000.03000000.0003000000.0-1000000.0-1000000.0003000000.0
Percentage of TransferRSUtoNQDCPlan0.0100.0100.0100.00.00.0100.0100.0100.00.00.0100.0

us-gaap:TreasuryStock


Transfer
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value01000000.0-1000000.0-3000000.000-3000000.01000000.01000000.000-3000000.0
Percentage of TransferRSUtoNQDCPlan0.0-100.0-100.0-100.00.00.0-100.0-100.0-100.00.00.0-100.0

tmus:UnrecognizedCompensationExpense us-gaap:AwardType

tmus:UnrecognizedCompensationExpense

tmus:RestrictedStockUnitsandPerformanceStockUnits


Unrecognized
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value-78.0670824-116.0631744-66.061371243402478
Percentage of UnrecognizedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:WriteoffofPremiumsDiscountsandIssuanceCosts us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:WriteoffofPremiumsDiscountsandIssuanceCosts

tmus:SeniorNotesDue20246000Instrument1, us-gaap:SeniorNotes, srt:AffiliatedEntity


Writeoffof
Period End2020-09-30
Value0.0
Percentage of WriteoffofPremiumsDiscountsandIssuanceCosts0.0

tmus:SeniorNotesDue20246000Instrument2, us-gaap:SeniorNotes, srt:AffiliatedEntity


Writeoffof
Period End2020-09-30
Value0.0
Percentage of WriteoffofPremiumsDiscountsandIssuanceCosts0.0

tmus:WriteoffofPremiumsDiscountsandIssuanceCosts us-gaap:DebtInstrument, us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:TotalSeniorNotesAndIncrementalTermLoanFacilities, srt:AffiliatedEntity


Writeoffof
Period End2020-09-30
Value15
Percentage of WriteoffofPremiumsDiscountsandIssuanceCosts0.0

tmus:WriteoffofPremiumsDiscountsandIssuanceCosts us-gaap:RelatedPartyTransactionsByRelatedParty

srt:AffiliatedEntity


Writeoffof
Period End2020-09-30
Value51
Percentage of WriteoffofPremiumsDiscountsandIssuanceCosts0.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value762188872138141484.04.0100575.010.074
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value762188872138141484.04.0100575.010.074
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2020-12-312020-09-302020-06-302019-06-302012-12-312012-09-302012-06-302012-03-31
Value0.00.04180.00.081340.00.0
Percentage of AssetImpairmentCharges0.00.0100.00.00.0100.00.00.0

us-gaap:AssetRetirementObligationAccretionExpense

us-gaap:AssetRetirementObligationAccretionExpense


Asset
Period End2020-12-312020-09-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value18151.7781.7261.6811.6311.5881.0261.4361.4491.3130.2911.4871.398-0.113
Percentage of AssetRetirementObligationAccretionExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationLiabilitiesIncurred

us-gaap:AssetRetirementObligationLiabilitiesIncurred


Asset
Period End2020-12-312020-09-30
Value7.03.0
Percentage of AssetRetirementObligationLiabilitiesIncurred100.0100.0

us-gaap:AssetRetirementObligationLiabilitiesSettled

us-gaap:AssetRetirementObligationLiabilitiesSettled


Asset
Period End2020-12-312020-09-30
Value2416
Percentage of AssetRetirementObligationLiabilitiesSettled100.0100.0

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax

tmus:SprintCorporation


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value8471359-35.01111813451728
Percentage of BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss

tmus:SprintCorporation


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value8471359285146811698491154
Percentage of BusinessAcquisitionsProFormaNetIncomeLoss100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaRevenue

tmus:SprintCorporation


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value20339192691766517408182851724317460
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationAcquisitionRelatedCosts

tmus:SprintCorporation


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.0139.08.01451431261592221131025341
Percentage of BusinessCombinationAcquisitionRelatedCosts0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:BusinessCombinationConsiderationTransferred1

tmus:ShenandoahPersonalCommunicationsCompany, us-gaap:SubsequentEvent


Business
Period End2021-08-03
Value1900
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual

tmus:SprintCorporation


Business
Period End2020-12-312020-09-30
Value388897
Percentage of BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual100.0100.0

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

tmus:SprintCorporation


Business
Period End2020-12-312020-09-30
Value70007200
Percentage of BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual100.0100.0

us-gaap:CapitalizedComputerSoftwareImpairments1

us-gaap:CapitalizedComputerSoftwareImpairments1


Capitalized
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.00.02000.0
Percentage of CapitalizedComputerSoftwareImpairments10.00.0100.00.0

us-gaap:CapitalizedContractCostAmortization

us-gaap:CapitalizedContractCostAmortization


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value26424823422120520518916213711696795735
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths us-gaap:IncomeStatementLocation

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:InterestExpense


Cash
Period End2021-06-302021-03-31
Value-388.0192
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0

us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.017150.00.00.01944
Percentage of CashFlowsBetweenTransfereeAndTransferorProceedsFromCollectionsReinvestedInRevolvingPeriodTransfers0.0100.00.00.00.0100.0

us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value181737-130.06.0-100.01939
Percentage of CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers100.0100.0100.0100.0100.0100.0

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations


Cash
Period End2020-12-312020-09-302020-06-30
Value0.00.0611
Percentage of CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations0.00.0100.0

us-gaap:ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset

us-gaap:ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset


Consideration
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1089138115601535148616131647173416161512137612631205112810839729921016
Percentage of ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value416832.05.010.05281.039435601282331528
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentIncreaseDecreaseOtherNet us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DebtInstrumentIncreaseDecreaseOtherNet

us-gaap:LongTermDebt, srt:AffiliatedEntity


Debt
Period End2020-09-30
Value0.0
Percentage of DebtInstrumentIncreaseDecreaseOtherNet0.0

us-gaap:ShortTermDebt, srt:AffiliatedEntity


Debt
Period End2020-09-30
Value0.0
Percentage of DebtInstrumentIncreaseDecreaseOtherNet0.0

us-gaap:DebtInstrumentIncreaseDecreaseOtherNet us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:LongTermDebt


Debt
Period End2021-06-302021-03-312020-09-30
Value-29.0-144.0-4301.0
Percentage of DebtInstrumentIncreaseDecreaseOtherNet0.00.00.0

tmus:ThirdParty, us-gaap:ShortTermDebt


Debt
Period End2021-06-302021-03-312020-09-30
Value-201.01444301
Percentage of DebtInstrumentIncreaseDecreaseOtherNet0.00.00.0

us-gaap:DebtInstrumentInterestRateDuringPeriod

us-gaap:DebtInstrumentInterestRateDuringPeriod


Debt
Period End2021-06-302020-06-30
Value4.14.9
Percentage of DebtInstrumentInterestRateDuringPeriod100.0100.0

us-gaap:DebtInstrumentPeriodicPaymentPrincipal us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentPeriodicPaymentPrincipal

tmus:SprintCorporation, tmus:SeniorSecuredSeries20161A1NotesDue20213360, us-gaap:SeniorNotes


Debt
Period End2020-12-312020-09-30
Value656438
Percentage of DebtInstrumentPeriodicPaymentPrincipal100.0100.0

us-gaap:DebtInstrumentRedemptionPricePercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentRedemptionPricePercentage

tmus:SeniorNotesDue20255.125, us-gaap:SeniorNotes, srt:AffiliatedEntity, us-gaap:SubsequentEvent


Debt
Period End2020-07-04
Value1.0
Percentage of DebtInstrumentRedemptionPricePercentage100.0

us-gaap:DebtInstrumentRedemptionPricePercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

tmus:A6.500SeniorNotesdue2024, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Debt
Period End2020-07-04
Value1.0217
Percentage of DebtInstrumentRedemptionPricePercentage102.2

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:DefinedBenefitPlanContributionsByEmployer


Defined
Period End2020-12-312020-09-302020-06-30
Value162616
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


Defined
Period End2020-12-312020-09-302020-06-30
Value171817
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2020-12-312020-09-302020-06-30
Value2000000.03000000.02000000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount


Defined
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value514942312429
Percentage of DefinedContributionPlanEmployerDiscretionaryContributionAmount100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value390038003700120017001600
Percentage of Depreciation100.0100.0100.0100.0100.0100.0

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax

us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Discontinued
Period End2020-12-31
Value0.0
Percentage of DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax0.0

us-gaap:DiscontinuedOperationTaxEffectOfDiscontinuedOperation us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DiscontinuedOperationTaxEffectOfDiscontinuedOperation

us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Discontinued
Period End2020-12-31
Value0.0
Percentage of DiscontinuedOperationTaxEffectOfDiscontinuedOperation0.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold us-gaap:ProductOrService, us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold

tmus:ProductEquipment, us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-312020-06-30
Value0.0499
Percentage of DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold0.0100.0

us-gaap:Service, us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-312020-06-30
Value0.025
Percentage of DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold0.05.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense

us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-31
Value0.0
Percentage of DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense0.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationOperatingExpense us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationOperatingExpense

us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-31
Value0.0
Percentage of DisposalGroupIncludingDiscontinuedOperationOperatingExpense0.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationRevenue us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationRevenue

us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-312020-06-30
Value0.01270
Percentage of DisposalGroupIncludingDiscontinuedOperationRevenue0.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationRevenue us-gaap:ProductOrService, us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

tmus:PrepaidRevenues, us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-312020-06-30
Value0.0973
Percentage of DisposalGroupIncludingDiscontinuedOperationRevenue0.076.6

tmus:ProductEquipment, us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-312020-06-30
Value0.0270
Percentage of DisposalGroupIncludingDiscontinuedOperationRevenue0.021.3

tmus:RoamingAndOtherServicesRevenue, us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-312020-06-30
Value0.027
Percentage of DisposalGroupIncludingDiscontinuedOperationRevenue0.02.1

us-gaap:Service, us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Disposal
Period End2020-12-312020-06-30
Value0.01000
Percentage of DisposalGroupIncludingDiscontinuedOperationRevenue0.078.7

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


Effective
Period End2020-09-302020-06-302019-12-312019-09-302019-06-302013-06-302012-06-30
Value24.50.007-25.0927.10.2440.350.35
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value273449222525192022202116
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2120202021212020
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2019202021202120
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value269287257246236282248235
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value173183180145147146117113
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1181331369257959078719387817981899298114
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

tmus:AccountsReceivablesGross


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value687991582234262018192621271421243639
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs57.659.466.963.038.635.828.925.625.420.429.925.934.217.323.626.136.734.2

tmus:EquipmentInstallmentPlanReceivable


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5054453435616458537461605267686862757664568185897287
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs42.440.633.137.061.464.271.174.474.679.670.174.165.882.776.473.963.365.80.00.00.00.00.00.00.00.0

us-gaap:FinancingReceivableSignificantSales

us-gaap:FinancingReceivableSignificantSales


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value383534304536404342423948475157414441
Percentage of FinancingReceivableSignificantSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableSignificantSales us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

tmus:EquipmentInstallmentPlanReceivable


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value38353430453640434242394847515741444143427219630.00.00.0
Percentage of FinancingReceivableSignificantSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0

us-gaap:GoodwillAcquiredDuringPeriod us-gaap:BusinessAcquisition

us-gaap:GoodwillAcquiredDuringPeriod

tmus:Swiftel


Goodwill
Period End2021-03-31
Value19
Percentage of GoodwillAcquiredDuringPeriod100.0

us-gaap:GoodwillImpairmentLoss

us-gaap:GoodwillImpairmentLoss


Goodwill
Period End2020-12-312020-09-302020-06-302013-12-312013-09-302012-12-312012-09-30
Value0.00.02180.00.00.08134
Percentage of GoodwillImpairmentLoss0.00.0100.00.00.00.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:BusinessAcquisition

us-gaap:GoodwillPurchaseAccountingAdjustments

tmus:SprintCorporation


Goodwill
Period End2021-06-302021-03-31
Value0.022
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0

us-gaap:IncomeLossAttributableToParent

us-gaap:IncomeLossAttributableToParent


Income
Period End2021-03-312020-03-31
Value11791257
Percentage of IncomeLossAttributableToParent100.0100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax


Income
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.00.03200.0
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTax0.00.0100.00.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTax us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DiscontinuedOperationsDisposedOfBySale, tmus:PrepaidTransaction


Income
Period End2020-12-312020-06-30
Value0.0320
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTax0.0100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare


Income
Period End2020-12-312020-09-302020-06-302019-06-30
Value-0.01-0.010.260
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare100.0100.0100.00.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare


Income
Period End2020-12-312020-09-302020-06-302019-06-30
Value0-0.020.260
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare0.0100.0100.00.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value28-1384.0507-964.0-1261.0-405.0356-395.04313505-265.0-79.0-1028.01686-12.056-651.0367-731.0-345.0-492.0657582-153.0-393.0153040-82.882-39.80392-4.741-113.42928811.015-95.6643
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerAsset


Increase
Period End2021-06-302021-03-312020-12-31
Value-8.0-3.035
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-31
Value14-49.041
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0

us-gaap:IncreaseDecreaseInFinanceReceivables

us-gaap:IncreaseDecreaseInFinanceReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5687271343306-127.0-69.05377815025075533528622237415435313459-104.0-343.0-109.0-1439.0-229.0350229
Percentage of IncreaseDecreaseInFinanceReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOperatingLeaseLiability

us-gaap:IncreaseDecreaseInOperatingLeaseLiability


Increase
Period End2021-06-302020-06-30
Value-996000000.0-1077000000.0
Percentage of IncreaseDecreaseInOperatingLeaseLiability100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value154-54.02968.0104-6.0-144.01188387-128.0193248-132.0245184135111649856-185.0159184-35.0-91.0-11.171113.856-9.902-10.4230.375-4.674-11.436-8.645-2.166-4.648-11.5570.475
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-47.0-217.0-16.0-51.0-2190.0798.042-27.0121-48.039-105.045-149.060-189.045-168.0112-74.02882092-182.092-6.6186.0783.5520.3922.4542.1880.1555.6510.6150.953-0.9623.561.519
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.1547919.2635380.014538110.07.850248-0.1735248.112515.767157.4199830.2577446.7656444.3801827.02142-0.3224927.9922867.2476539.434950.9699189.2591227.3184667.71380.8927826.9479489.5175060.0-0.0412550.09.6322240.01.3663560.00.01.5572320.1815611.4352840.2511781.564547-0.5269442.8460215.1637934.4179240.1731752.4686842.407023
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IndefinitelivedIntangibleAssetsAcquired us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefinitelivedIntangibleAssetsAcquired

us-gaap:LicensingAgreements


Indefinitelived
Period End2021-06-302021-03-312020-12-312020-09-302017-12-312017-09-302017-06-302017-03-312016-03-31
Value1572171935211779961341200
Percentage of IndefinitelivedIntangibleAssetsAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestCostsCapitalized

us-gaap:InterestCostsCapitalized


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5784101108119112112118125118
Percentage of InterestCostsCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseRelatedParty

us-gaap:InterestExpenseRelatedParty


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value324641446399981001011091041241281661621671311006476937913412192649283851892183225178174165151
Percentage of InterestExpenseRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeOther

us-gaap:InterestIncomeOther


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2.03.08.03.06.0127.05.04.08.02.05.06.06.02.02.06.07.0636268688510911411210497837564504035242018
Percentage of InterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value163915681410911891886829800
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LitigationSettlementAmountAwardedToOtherParty dei:LegalEntity, us-gaap:BusinessAcquisition

us-gaap:LitigationSettlementAmountAwardedToOtherParty

tmus:SoftBankGroupCorp., tmus:SprintCorporation


Litigation
Period End2020-11-30
Value200
Percentage of LitigationSettlementAmountAwardedToOtherParty100.0

us-gaap:LitigationSettlementAmountAwardedToOtherParty us-gaap:LitigationStatus, us-gaap:SubsequentEventType

us-gaap:SettledLitigation, us-gaap:SubsequentEvent


Litigation
Period End2020-11-05
Value200
Percentage of LitigationSettlementAmountAwardedToOtherParty0.0

us-gaap:NoncashOrPartNoncashAcquisitionDebtAssumed1

us-gaap:NoncashOrPartNoncashAcquisitionDebtAssumed1


Noncash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.00.0380.025475502500.00.0542371.01.02.02880.00.00.01500.00.0574430.0
Percentage of NoncashOrPartNoncashAcquisitionDebtAssumed10.00.0100.00.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.0100.0100.00.0

us-gaap:NoncashOrPartNoncashAcquisitionDebtAssumed1 us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:LongTermDebt


Noncash
Period End2020-09-30
Value0.0
Percentage of NoncashOrPartNoncashAcquisitionDebtAssumed10.0

tmus:ThirdParty, us-gaap:ShortTermDebt


Noncash
Period End2020-09-30
Value0.0
Percentage of NoncashOrPartNoncashAcquisitionDebtAssumed10.0

us-gaap:NoncashOrPartNoncashAcquisitionDebtAssumed1 us-gaap:CounterpartyName, us-gaap:DebtInstrument

tmus:ThirdParty, tmus:TotalDebt


Noncash
Period End2020-09-30
Value0.0
Percentage of NoncashOrPartNoncashAcquisitionDebtAssumed10.0

us-gaap:NoncashOrPartNoncashAcquisitionDebtAssumed1 us-gaap:DebtInstrument

tmus:TotalDebt


Noncash
Period End2020-09-30
Value0.0
Percentage of NoncashOrPartNoncashAcquisitionDebtAssumed10.0

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1


Noncash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value33348544359914443093942981671471982292803043562622702434132345265314638540.04430.06.011713348-15.01930.00.00.0
Percentage of NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:NoncashOrPartNoncashAcquisitionInventoryAcquired1

us-gaap:NoncashOrPartNoncashAcquisitionInventoryAcquired1


Noncash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value4164454304335385978656757807490821071652731971024-186.0105131198-32.0
Percentage of NoncashOrPartNoncashAcquisitionInventoryAcquired1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeaseExpense


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value135612591139684665657634602
Percentage of OperatingLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value126316511126134912698756897037036880.00.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:OperatingLeaseRightOfUseAssetAmortizationExpense

us-gaap:OperatingLeaseRightOfUseAssetAmortizationExpense


Operating
Period End2021-06-302021-03-312020-12-312020-09-30
Value2611237380
Percentage of OperatingLeaseRightOfUseAssetAmortizationExpense100.0100.0100.0100.0

us-gaap:OptionIndexedToIssuersEquityShares dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:OptionIndexedToIssuersEquityEquity

us-gaap:OptionIndexedToIssuersEquityShares

tmus:SoftBankGroupCorp., tmus:DeutscheTelekomAG, tmus:DirectAndIndirectCallOption


Option
Period End2020-12-312020-06-22
Value0.0101
Percentage of OptionIndexedToIssuersEquityShares0.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value343434332.0-792.0202-257.0-292.0-189.0-332.00.00.00.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value121211123.0-276.0-443.088-102.0-66.0-115.00.00.00.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax


Other
Period End2020-09-302020-06-30
Value4439
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax us-gaap:IncomeStatementLocation

us-gaap:InterestExpense


Other
Period End2021-03-31
Value46
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax0.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:InterestExpense


Other
Period End2021-06-302020-06-30
Value-47000000.0-39000000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0100.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax


Other
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.00.01.00.00.00.00.00.00.00.00.00.0-62.025-18.0-22.050
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax0.00.0100.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-4.0691371392170728920761752-9.0248875-85.0-17.0611.08.01.0-121.0989.0-1.0
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-28.0-4.0129251681612-1.00.07.09.0-4.0-33.07.0-3.0-1.0-5.08.011-5.0-4.06.0-103.0-5.0-2.014271.0-6.07.0135-10.020-15.08811-107.058278.959-3.257478.541976-77.976
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2021-06-302021-03-312020-12-312013-12-312013-09-30
Value371104702.02.0
Percentage of PaymentsForRestructuring100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

tmus:NetworkingDecommissioning


Payments
Period End2021-06-302021-03-312020-12-31
Value1.028383
Percentage of PaymentsForRestructuring2.725.581.5

us-gaap:ContractTermination


Payments
Period End2021-06-302021-03-312020-12-31
Value214422
Percentage of PaymentsForRestructuring56.840.04.7

us-gaap:EmployeeSeverance


Payments
Period End2021-06-302021-03-312020-12-31
Value153865
Percentage of PaymentsForRestructuring40.534.513.8

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDebtExtinguishmentCosts


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value6.0650.058240.00.0280.00.00.0181310.00.0159
Percentage of PaymentsOfDebtExtinguishmentCosts100.0100.00.0100.0100.00.00.0100.00.00.00.0100.0100.00.00.0100.0

us-gaap:PaymentsOfFinancingCosts

us-gaap:PaymentsOfFinancingCosts


Payments
Period End2020-12-312020-09-302020-06-302019-09-302019-06-302018-09-302018-06-302017-09-302017-06-30
Value0.00.01090.00.00.0380.00.0
Percentage of PaymentsOfFinancingCosts0.00.0100.00.00.00.0100.00.00.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-30
Value762188872138141484.04.0100575.010.074656.03.092693.03.046562.070281.00.00.00.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireBusinessesGross

tmus:ShenandoahPersonalCommunicationsCompany, us-gaap:SubsequentEvent


Payments
Period End2021-08-03
Value2000
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.0290.00.050000.0310.00.00.00.05.03330.00.00.00.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.00.00.0100.00.0100.00.00.00.00.0100.0100.00.00.00.00.0

us-gaap:PaymentsToAcquireIntangibleAssets

us-gaap:PaymentsToAcquireIntangibleAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8.08922506-17.07459910413665185262228518.0155791144247052245594-3.09414816965102323670.03291.0482.0660.1160.167202.5840.4420.721.7551.5285.1871.711.780.196
Percentage of PaymentsToAcquireIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireIntangibleAssets tmus:LicenseAuctionType, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

tmus:Auction107, us-gaap:LicensingAgreements


Payments
Period End2021-03-312020-10-31
Value8900438
Percentage of PaymentsToAcquireIntangibleAssets99.80.0

us-gaap:ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables

us-gaap:ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value113789180985560286898090083911571450133813231295119311108821134
Percentage of ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested


Proceeds
Period End2020-12-312020-09-30
Value-14.01238
Percentage of ProceedsFromDivestitureOfBusinessesNetOfCashDivested100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.02550172900.0
Percentage of ProceedsFromIssuanceOfCommonStock0.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfDebt us-gaap:DebtInstrument

us-gaap:ProceedsFromIssuanceOfDebt

tmus:TotalDebt


Proceeds
Period End2021-06-302021-03-312020-09-30
Value30106758162
Percentage of ProceedsFromIssuanceOfDebt100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfOtherLongTermDebt us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:ProceedsFromIssuanceOfOtherLongTermDebt

us-gaap:LongTermDebt, srt:AffiliatedEntity


Proceeds
Period End2021-03-31
Value5000000.0
Percentage of ProceedsFromIssuanceOfOtherLongTermDebt100.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt


Proceeds
Period End2020-10-282020-10-062020-12-312020-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-162013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4600400086470.00.00.00.024940.00.0149535000.00.00.00.00.00.0100049710009920.00.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt100.0100.0100.00.00.00.00.0100.00.00.0100.0100.00.00.00.00.00.00.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:LongTermDebt


Proceeds
Period End2021-06-302021-03-312020-09-30
Value301067581.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.00.00.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt us-gaap:CounterpartyName, us-gaap:DebtInstrument

tmus:ThirdParty, tmus:TotalDebt


Proceeds
Period End2021-06-302021-03-312020-09-30
Value30106758162
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.00.00.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt us-gaap:DebtInstrument

tmus:A2250SeniorNotesDue2026


Proceeds
Period End2021-01-14
Value993
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2250SeniorNotesDue2026IssuedJanuary142021


Proceeds
Period End2021-01-14
Value993
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2250SeniorNotesDue2026IssuedMay132021


Proceeds
Period End2021-05-13
Value798
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2625SeniorNotesDue2026


Proceeds
Period End2021-03-23
Value1193
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2625SeniorNotesDue2026IssuedMarch232021


Proceeds
Period End2021-03-23
Value1193
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2625SeniorNotesDue2029


Proceeds
Period End2021-01-14
Value993
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2625SeniorNotesDue2029IssuedJanuary142021


Proceeds
Period End2021-01-14
Value993
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2875SeniorNotesDue2031


Proceeds
Period End2021-01-14
Value993
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A2875SeniorNotesDue2031IssuedJanuary142021


Proceeds
Period End2021-01-14
Value994
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A3.375Notesdue2029


Proceeds
Period End2021-03-23
Value1243
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A3375SeniorNotesDue2029IssuedMarch232021


Proceeds
Period End2021-03-23
Value1243
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A3375SeniorNotesDue2029IssuedMay132021


Proceeds
Period End2021-05-13
Value1106
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A3500SeniorNotesDue2031


Proceeds
Period End2021-03-23
Value1343
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A3500SeniorNotesDue2031IssuedMarch232021


Proceeds
Period End2021-03-23
Value1342
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:A3500SeniorNotesDue2031IssuedMay132021


Proceeds
Period End2021-05-13
Value1106
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorSecuredNotesIssuedTotal


Proceeds
Period End2021-06-302021-03-31
Value30106758
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.00.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:SeniorNotesDue20261500, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorNotesDue20282050, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorNotesDue20312550, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorSecuredNotesDue20253500, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorSecuredNotesDue20273750, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorSecuredNotesDue20303875, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorSecuredNotesDue20404375, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorSecuredNotesDue20504500, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

tmus:SeniorSecuredNotesIssuedTotal, us-gaap:SeniorNotes


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Proceeds
Period End2020-10-282020-10-09
Value46004000
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt100.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-46.0-45.0-36.01377.0-5.0-4.0-4.0-5.0-4.0-46.0-6.0-3.0-28.0-27.0-5.0-3.019-29.08.08.01.01411261-17.019-3.0-16.0-2.0-4.0-2.03.374-6.374-16.889-6.378-9.621-9.7931649-17.538-17.476-6.989-21.739
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfOtherDebt us-gaap:CounterpartyName, us-gaap:DebtInstrument

us-gaap:ProceedsFromRepaymentsOfOtherDebt

tmus:ThirdParty, tmus:TotalDebt


Proceeds
Period End2021-03-312020-09-30
Value-111.0-80.0
Percentage of ProceedsFromRepaymentsOfOtherDebt100.0100.0

us-gaap:ProceedsFromRepaymentsOfOtherDebt us-gaap:DebtInstrument

tmus:TotalDebt


Proceeds
Period End2021-03-312020-09-30
Value-106.0-75.0
Percentage of ProceedsFromRepaymentsOfOtherDebt95.593.8

us-gaap:ProceedsFromSaleOfIntangibleAssets

us-gaap:ProceedsFromSaleOfIntangibleAssets


Proceeds
Period End2020-09-30
Value17
Percentage of ProceedsFromSaleOfIntangibleAssets100.0

us-gaap:ProceedsFromShortTermDebt

us-gaap:ProceedsFromShortTermDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.00.0187430.00.05758808852151810207021700.0105518550.00.00.00.0
Percentage of ProceedsFromShortTermDebt0.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.0

us-gaap:ProceedsFromShortTermDebt us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:ShortTermDebt


Proceeds
Period End2020-09-30
Value161
Percentage of ProceedsFromShortTermDebt0.0

us-gaap:ProceedsFromStockOptionsExercised us-gaap:PlanName

us-gaap:ProceedsFromStockOptionsExercised

tmus:PredecessorPlans


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-30
Value6.0270.00.0
Percentage of ProceedsFromStockOptionsExercised100.0100.00.00.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value728211314323311389747173888075549012382931191181191211631721081040.1360.1210.0950.166-0.036-0.020.086-0.028
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value72821131432331138974707488817454901238293
Percentage of ProvisionForLoanLeaseAndOtherLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

tmus:AccountsReceivablesGross


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4828778313642262016152321214.021271937
Percentage of ProvisionForLoanLeaseAndOtherLosses66.734.168.158.058.437.229.227.022.920.326.125.928.47.423.322.023.239.8

tmus:EquipmentInstallmentPlanReceivable


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value24543660977163545459656053506996635665596462961147877
Percentage of ProvisionForLoanLeaseAndOtherLosses33.365.931.942.041.662.870.873.077.179.773.974.171.692.676.778.076.860.20.00.00.00.00.00.00.00.0

us-gaap:ReceivableWithImputedInterestEffectiveYieldInterestRate us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ReceivableWithImputedInterestEffectiveYieldInterestRate

tmus:EquipmentInstallmentPlanReceivable


Receivable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-31
Value-0.46.7-0.97.523-0.0110.088-0.004-0.004-0.0020.098-0.0020.0010.0020.099-0.00100.0030.094-0.002-0.0010.0010.0920.095
Percentage of ReceivableWithImputedInterestEffectiveYieldInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument

us-gaap:RepaymentsOfDebt

tmus:TotalDebt


Repayments
Period End2021-03-31
Value274
Percentage of RepaymentsOfDebt100.0

us-gaap:RepaymentsOfOtherLongTermDebt us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

us-gaap:RepaymentsOfOtherLongTermDebt

tmus:ThirdParty, us-gaap:LongTermDebt


Repayments
Period End2021-03-31
Value85
Percentage of RepaymentsOfOtherLongTermDebt100.0

us-gaap:RepaymentsOfShortTermDebt

us-gaap:RepaymentsOfShortTermDebt


Repayments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value0.018929254753000.00.0542460.04.04.02920.00.01500.01.031518563-96.02835.0226501940.00.00.0
Percentage of RepaymentsOfShortTermDebt0.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:RepaymentsOfShortTermDebt us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:ShortTermDebt


Repayments
Period End2021-06-302021-03-312020-09-30
Value3862741961
Percentage of RepaymentsOfShortTermDebt0.00.00.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302015-09-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value48344809819334970.00.00.00.02331-5.036486.0
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges us-gaap:RestructuringCostAndReserve

tmus:NetworkingDecommissioning


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-30
Value421245621
Percentage of RestructuringCharges87.535.395.021.4

us-gaap:ContractTermination


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-30
Value3.06.09.056
Percentage of RestructuringCharges6.217.61.957.1

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-30
Value3.0161521
Percentage of RestructuringCharges6.247.13.121.4

us-gaap:RestructuringReserveAccrualAdjustment1

us-gaap:RestructuringReserveAccrualAdjustment1


Restructuring
Period End2021-06-302021-03-312020-12-31
Value-13000000.0-7000000.0-43000000.0
Percentage of RestructuringReserveAccrualAdjustment1100.0100.0100.0

us-gaap:RestructuringReserveAccrualAdjustment1 us-gaap:RestructuringCostAndReserve

tmus:NetworkingDecommissioning


Restructuring
Period End2021-06-302021-03-312020-12-31
Value-14000000.0-2000000.0-43000000.0
Percentage of RestructuringReserveAccrualAdjustment1107.728.6100.0

us-gaap:ContractTermination


Restructuring
Period End2020-12-31
Value0
Percentage of RestructuringReserveAccrualAdjustment1-0.0

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-312020-12-31
Value1000000.0-5000000.00
Percentage of RestructuringReserveAccrualAdjustment1-7.771.4-0.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value37710936121951517898395368180434133176142
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-31
Value104391110831183365855553898914006940.0
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RoyaltyExpense us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RoyaltyExpense

srt:AffiliatedEntity


Royalty
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value202020232123
Percentage of RoyaltyExpense100.0100.0100.0100.0100.0100.0

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction us-gaap:CounterpartyName

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction

tmus:MarceloClaure


Sale
Period End2020-12-31
Value0.0
Percentage of SaleOfStockNumberOfSharesIssuedInTransaction0.0

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction us-gaap:CounterpartyName, us-gaap:SubsequentEventType

tmus:MarceloClaure, us-gaap:SubsequentEvent


Sale
Period End2020-07-16
Value5.0
Percentage of SaleOfStockNumberOfSharesIssuedInTransaction0.0

us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction dei:LegalEntity

us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction

tmus:DeutscheTelekomAG


Sale
Period End2020-12-312020-08-03
Value043.4
Percentage of SaleOfStockPercentageOfOwnershipAfterTransaction0.0100.0

tmus:OtherStockholders


Sale
Period End2020-12-312020-08-03
Value048.0
Percentage of SaleOfStockPercentageOfOwnershipAfterTransaction0.0110.6

tmus:SoftBankGroupCorp.


Sale
Period End2020-12-312020-08-03
Value08.6
Percentage of SaleOfStockPercentageOfOwnershipAfterTransaction0.019.8

us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction dei:LegalEntity, us-gaap:SubsequentEventType

tmus:DeutscheTelekomAG, us-gaap:SubsequentEvent


Sale
Period End2020-08-03
Value0.434
Percentage of SaleOfStockPercentageOfOwnershipAfterTransaction1.0

tmus:OtherStockholders, us-gaap:SubsequentEvent


Sale
Period End2020-08-03
Value0.48
Percentage of SaleOfStockPercentageOfOwnershipAfterTransaction1.1

tmus:SoftBankGroupCorp., us-gaap:SubsequentEvent


Sale
Period End2020-08-03
Value0.086
Percentage of SaleOfStockPercentageOfOwnershipAfterTransaction0.2

us-gaap:SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale

us-gaap:SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale


Securitization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value12181.018-30.0-25.0-39.0-28.0-28.0-35.0-30.0-48.0-27.0-52.0-57.0-67.0-80.0-95.0-71.0-59.0-46.0-52.0-65.0-26.0-48.0-65.0
Percentage of SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale us-gaap:QualitativeAndQuantitativeInformationTransferorsContinuingInvolvementTransferredFinancialAssetsByTransferOrTransferee, us-gaap:TransactionType

us-gaap:VariableInterestEntityPrimaryBeneficiary, tmus:FactoringandEIPSecuritizationArrangement


Securitization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12181.018-30.0-25.0-39.0-28.0-28.0-35.0
Percentage of SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleGainLossOnSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares


Share
Period End2020-12-312020-09-302018-12-312018-09-30
Value00-2.180
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.00.0100.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312020-09-302018-12-312018-09-30
Value0.385.570.270.24
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.00.0-12.40.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

tmus:RestrictedStockUnitsandPerformanceStockUnits


Share
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value-1.01114.5299.80.0777.4174.35-0.3965.4172.32-3.0563.8863.94
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312020-09-302018-12-312018-09-30
Value4.890.12-2.41-0.02
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue-484.20.1617.9-0.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312020-09-302018-12-312018-09-30
Value1.620.40.410.12
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue-160.40.3-105.10.2

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue

tmus:RestrictedStockUnitsandPerformanceStockUnits


Share
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value236264367156142418717301911712
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares


Share
Period End2020-12-312020-09-302018-12-312018-09-30
Value0.793.56-0.380.38
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312020-09-302018-12-312018-09-30
Value-0.421.162.630.23
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue-53.232.6-692.160.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

tmus:PredecessorPlans


Share
Period End2020-12-31
Value7.93
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

tmus:PredecessorPlans


Share
Period End2020-12-31
Value0.75
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.01250.0650.0830.0550.0690.0480.055
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.01250.0650.0830.0550.0690.0480.055
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.03.06.027141.00.00.00.01.00.00.01.02.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.03.06.027141.00.00.00.01.00.00.01.02.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2020-12-312020-09-302020-06-30
Value0.0254616990
Percentage of StockRepurchasedDuringPeriodValue0.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-12-312020-09-302020-06-30
Value0.0254616990
Percentage of StockRepurchasedDuringPeriodValue0.0100.0100.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value89106716258625865
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WriteOffOfDeferredDebtIssuanceCost us-gaap:DebtInstrument

us-gaap:WriteOffOfDeferredDebtIssuanceCost

tmus:A6.500SeniorNotesdue2026


Write
Period End2021-03-27
Value36
Percentage of WriteOffOfDeferredDebtIssuanceCost100.0

us-gaap:WriteOffOfDeferredDebtIssuanceCost us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:A6.375SeniorNotesdue2025, us-gaap:SeniorNotes


Write
Period End2020-09-01
Value24
Percentage of WriteOffOfDeferredDebtIssuanceCost0.0

tmus:A6.500SeniorNotesdue2024, us-gaap:SeniorNotes


Write
Period End2020-07-04
Value12
Percentage of WriteOffOfDeferredDebtIssuanceCost0.0

us-gaap:WriteOffOfDeferredDebtIssuanceCost us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:SeniorNotesDue20215125, us-gaap:SeniorNotes, srt:AffiliatedEntity


Write
Period End2020-07-04
Value15
Percentage of WriteOffOfDeferredDebtIssuanceCost0.0

tmus:AccruedLiabilitiesTollAndInterconnect

tmus:AccruedLiabilitiesTollAndInterconnect


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value331233217179156
Percentage of AccruedLiabilitiesTollAndInterconnect100.0100.0100.0100.0100.0

tmus:CarryforwardNetOperatingLossTaxEffected us-gaap:IncomeTaxAuthority

tmus:CarryforwardNetOperatingLossTaxEffected

us-gaap:DomesticCountry


Carryforward
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value176138119123204
Percentage of CarryforwardNetOperatingLossTaxEffected100.0100.0100.0100.0100.0

us-gaap:ForeignCountry


Carryforward
Period End2020-12-31
Value26
Percentage of CarryforwardNetOperatingLossTaxEffected14.8

us-gaap:StateAndLocalJurisdiction


Carryforward
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value455282261242167
Percentage of CarryforwardNetOperatingLossTaxEffected258.5204.3219.3196.781.9

tmus:DebtInstrumentAverageAmountOutstandingDuringPeriod

tmus:DebtInstrumentAverageAmountOutstandingDuringPeriod


Debt
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value755007370058400660992500025500
Percentage of DebtInstrumentAverageAmountOutstandingDuringPeriod100.0100.0100.0100.0100.0100.0

tmus:DebtInstrumentPrincipalAmountOutstanding us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:DebtInstrumentPrincipalAmountOutstanding

tmus:SprintCorporation, tmus:SeniorSecuredSeries20161A1NotesDue20213360, us-gaap:SeniorNotes


Debt
Period End2020-12-312020-09-302020-06-30
Value6568751100
Percentage of DebtInstrumentPrincipalAmountOutstanding100.0100.0100.0

tmus:DebtInstrumentRedeemedFaceAmount

tmus:DebtInstrumentRedeemedFaceAmount


Debt
Period End2020-12-31
Value9450
Percentage of DebtInstrumentRedeemedFaceAmount100.0

tmus:DebtInstrumentRedeemedFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:A6.375SeniorNotesdue2025, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value1700
Percentage of DebtInstrumentRedeemedFaceAmount18.0

tmus:A6.500SeniorNotesdue2024, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value1000
Percentage of DebtInstrumentRedeemedFaceAmount10.6

tmus:SeniorNotesDue20207000, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value1500
Percentage of DebtInstrumentRedeemedFaceAmount15.9

tmus:TotalOfSecuredBridgeLoanFacilityAndSeniorNotesToThirdPartiesRedeemed, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value4200
Percentage of DebtInstrumentRedeemedFaceAmount44.4

tmus:DebtInstrumentRedeemedFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty

tmus:A5.300SeniorNotesdue2021, us-gaap:SeniorNotes, srt:AffiliatedEntity


Debt
Period End2020-12-31
Value2000
Percentage of DebtInstrumentRedeemedFaceAmount21.2

tmus:SeniorNotesDue20246000Instrument1, us-gaap:SeniorNotes, srt:AffiliatedEntity


Debt
Period End2020-12-31
Value1350
Percentage of DebtInstrumentRedeemedFaceAmount14.3

tmus:SeniorNotesDue20246000Instrument2, us-gaap:SeniorNotes, srt:AffiliatedEntity


Debt
Period End2020-12-31
Value650
Percentage of DebtInstrumentRedeemedFaceAmount6.9

tmus:SeniorNotesDue20255.125, us-gaap:SeniorNotes, srt:AffiliatedEntity


Debt
Period End2020-12-31
Value1250
Percentage of DebtInstrumentRedeemedFaceAmount13.2

tmus:TotalSeniorNotesAndIncrementalTermLoanFacilities, us-gaap:SeniorNotes, srt:AffiliatedEntity


Debt
Period End2020-12-31
Value5250
Percentage of DebtInstrumentRedeemedFaceAmount55.6

tmus:DeferredTaxAssetsOperatingLeaseLiability

tmus:DeferredTaxAssetsOperatingLeaseLiability


Deferred
Period End2020-12-312019-12-31
Value80313403
Percentage of DeferredTaxAssetsOperatingLeaseLiability100.0100.0

tmus:DeferredTaxLiabilitiesGoodwillandIntangibleAssetsIndefiniteLivedIntangibleAssets

tmus:DeferredTaxLiabilitiesGoodwillandIntangibleAssetsIndefiniteLivedIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value175185902549450386952617456295007
Percentage of DeferredTaxLiabilitiesGoodwillandIntangibleAssetsIndefiniteLivedIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0

tmus:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset

tmus:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset


Deferred
Period End2020-12-312019-12-31
Value72392881
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset100.0100.0

tmus:DefinedBenefitPlanExpectedFutureBenefitPaymentYearsFourAndFive

tmus:DefinedBenefitPlanExpectedFutureBenefitPaymentYearsFourAndFive


Defined
Period End2020-12-31
Value-206000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentYearsFourAndFive100.0

tmus:DefinedBenefitPlanExpectedFutureBenefitPaymentYearsTwoAndThree

tmus:DefinedBenefitPlanExpectedFutureBenefitPaymentYearsTwoAndThree


Defined
Period End2020-12-31
Value198
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentYearsTwoAndThree100.0

tmus:FinancingReceivableAllowanceForCreditLossAndImputedDiscountCurrent

tmus:FinancingReceivableAllowanceForCreditLossAndImputedDiscountCurrent


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value482512478450415386333
Percentage of FinancingReceivableAllowanceForCreditLossAndImputedDiscountCurrent100.0100.0100.0100.0100.0100.0100.0

tmus:FinancingReceivableAllowanceForCreditLossAndImputedDiscountNoncurrent

tmus:FinancingReceivableAllowanceForCreditLossAndImputedDiscountNoncurrent


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value11512412787768366
Percentage of FinancingReceivableAllowanceForCreditLossAndImputedDiscountNoncurrent100.0100.0100.0100.0100.0100.0100.0

tmus:FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment

tmus:FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear

tmus:FinancingReceivables1to30DaysPastDue, us-gaap:Prime


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value221383124193291375
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear100.0100.0100.0100.0100.0100.0

tmus:FinancingReceivables1to30DaysPastDue, us-gaap:Subprime


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1002252666146234
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear45.258.721.034.250.262.4

tmus:FinancingReceivables31to60DaysPastDue, us-gaap:Prime


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2.03.01.01.03.04.0
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear0.90.80.80.51.01.1

tmus:FinancingReceivables31to60DaysPastDue, us-gaap:Subprime


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value3.05.01.05.06.0
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear1.41.30.51.71.6

tmus:FinancingReceivables61to90DaysPastDue, us-gaap:Prime


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1.02.01.01.01.0
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear0.50.50.50.30.3

tmus:FinancingReceivables61to90DaysPastDue, us-gaap:Subprime


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1.02.01.02.03.0
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear0.50.50.50.70.8

us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDue, us-gaap:Prime


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2.02.01.01.02.02.0
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear0.90.50.80.50.70.5

us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDue, us-gaap:Subprime


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4.06.02.03.06.07.0
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear1.81.61.61.62.11.9

tmus:FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear us-gaap:InternalCreditAssessment

us-gaap:Prime


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value226390126196297382
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear102.3101.8101.6101.6102.1101.9

us-gaap:Subprime


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1082382871159250
Percentage of FinancingReceivableOriginatedMoreThanTwoYearsBeforeCurrentFiscalYear48.962.122.636.854.666.7

tmus:LeaseAgreementNumberOfTowers us-gaap:CounterpartyName

tmus:LeaseAgreementNumberOfTowers

tmus:AmericanTowerCorporation


Lease
Period End2020-09-14
Value20729.0
Percentage of LeaseAgreementNumberOfTowers100.0

tmus:LeaseAndServiceCreditCommitmentDueInNextRollingTwelveMonths

tmus:LeaseAndServiceCreditCommitmentDueInNextRollingTwelveMonths


Lease
Period End2021-06-302021-03-312020-12-312020-09-30
Value339340338328
Percentage of LeaseAndServiceCreditCommitmentDueInNextRollingTwelveMonths100.0100.0100.0100.0

tmus:LeaseAndServiceCreditCommitmentDueInRollingAfterYearFive

tmus:LeaseAndServiceCreditCommitmentDueInRollingAfterYearFive


Lease
Period End2021-06-302021-03-312020-12-312020-09-30
Value4900500051005100
Percentage of LeaseAndServiceCreditCommitmentDueInRollingAfterYearFive100.0100.0100.0100.0

tmus:LeaseAndServiceCreditCommitmentDueInRollingYearFourAndFive

tmus:LeaseAndServiceCreditCommitmentDueInRollingYearFourAndFive


Lease
Period End2021-06-302021-03-312020-12-312020-09-30
Value582579594609
Percentage of LeaseAndServiceCreditCommitmentDueInRollingYearFourAndFive100.0100.0100.0100.0

tmus:LeaseAndServiceCreditCommitmentDueInRollingYearTwoAndThree

tmus:LeaseAndServiceCreditCommitmentDueInRollingYearTwoAndThree


Lease
Period End2021-06-302021-03-312020-12-312020-09-30
Value624662675698
Percentage of LeaseAndServiceCreditCommitmentDueInRollingYearTwoAndThree100.0100.0100.0100.0

tmus:LeaseAndServiceCreditCommitmentMaximumRemainingCommitment

tmus:LeaseAndServiceCreditCommitmentMaximumRemainingCommitment


Lease
Period End2021-06-302021-03-312020-12-312020-09-30
Value89919292
Percentage of LeaseAndServiceCreditCommitmentMaximumRemainingCommitment100.0100.0100.0100.0

tmus:LesseeOperatingLeaseLeaseNotyetCommencedPaymentsDue

tmus:LesseeOperatingLeaseLeaseNotyetCommencedPaymentsDue


Lessee
Period End2020-12-312020-09-30
Value227283
Percentage of LesseeOperatingLeaseLeaseNotyetCommencedPaymentsDue100.0100.0

tmus:LicencePurchaseAgreementPurchasePriceLiability dei:LegalEntity, us-gaap:CounterpartyName, tmus:AssetAcquisition

tmus:LicencePurchaseAgreementPurchasePriceLiability

tmus:DISHNetworkCorporation, tmus:TMobileandSprintCorporation, tmus:SpectrumLicenses


Licence
Period End2020-07-01
Value72
Percentage of LicencePurchaseAgreementPurchasePriceLiability100.0

tmus:LongTermDebtCurrentAndNoncurrent us-gaap:CounterpartyName, us-gaap:DebtInstrument

tmus:LongTermDebtCurrentAndNoncurrent

tmus:ThirdParty, tmus:TotalDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value705457081866409620586660110983
Percentage of LongTermDebtCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0

tmus:LongtermDebtandLongtermDebttoAffiliates

tmus:LongtermDebtandLongtermDebttoAffiliates


Longterm
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value6654624944267062670727432260842187319945
Percentage of LongtermDebtandLongtermDebttoAffiliates100.0100.0100.0100.0100.0100.0100.0100.0

tmus:MergerCommitmentSettlementDueInNextRollingTwelveMonths

tmus:MergerCommitmentSettlementDueInNextRollingTwelveMonths


Merger
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.0242324
Percentage of MergerCommitmentSettlementDueInNextRollingTwelveMonths100.0100.0100.0100.0

tmus:MergerCommitmentSettlementDueInRollingYearFourAndFive

tmus:MergerCommitmentSettlementDueInRollingYearFourAndFive


Merger
Period End2021-06-302021-03-312020-12-312020-09-30
Value3.0111313
Percentage of MergerCommitmentSettlementDueInRollingYearFourAndFive100.0100.0100.0100.0

tmus:MergerCommitmentSettlementDueInRollingYearTwoAndThree

tmus:MergerCommitmentSettlementDueInRollingYearTwoAndThree


Merger
Period End2021-06-302021-03-312020-12-312020-09-30
Value13373736
Percentage of MergerCommitmentSettlementDueInRollingYearTwoAndThree100.0100.0100.0100.0

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionNextTwelveMonths

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionNextTwelveMonths


Minimum
Period End2021-06-302021-03-312020-12-312020-09-30
Value401399397393
Percentage of MinimumLeasePaymentsFailedSaleLeasebackTransactionNextTwelveMonths100.0100.0100.0100.0

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsThereafter

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsThereafter


Minimum
Period End2021-06-302021-03-312020-12-312020-09-30
Value473549624694
Percentage of MinimumLeasePaymentsFailedSaleLeasebackTransactionsThereafter100.0100.0100.0100.0

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFourAndFiveYears

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFourAndFiveYears


Minimum
Period End2021-06-302021-03-312020-12-312020-09-30
Value603601598591
Percentage of MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinFourAndFiveYears100.0100.0100.0100.0

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinTwoAndThreeYears

tmus:MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinTwoAndThreeYears


Minimum
Period End2021-06-302021-03-312020-12-312020-09-30
Value664690716738
Percentage of MinimumLeasePaymentsFailedSaleLeasebackTransactionsWithinTwoAndThreeYears100.0100.0100.0100.0

tmus:OperatingLossCarryforwardsTaxEffected us-gaap:IncomeTaxAuthority

tmus:OperatingLossCarryforwardsTaxEffected

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value350047011001000110016002100
Percentage of OperatingLossCarryforwardsTaxEffected100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCountry


Operating
Period End2020-12-31
Value67
Percentage of OperatingLossCarryforwardsTaxEffected1.9

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1500710797832689700600
Percentage of OperatingLossCarryforwardsTaxEffected42.9151.172.583.262.643.828.6

tmus:OutstandingChecks us-gaap:BalanceSheetLocation

tmus:OutstandingChecks

us-gaap:AccountsPayableAndAccruedLiabilities


Outstanding
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-31
Value281285628240380463630455356
Percentage of OutstandingChecks100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:ProxyAgreementPercentageOfVotingInterests dei:LegalEntity

tmus:ProxyAgreementPercentageOfVotingInterests

tmus:DeutscheTelekomAG


Proxy
Period End2020-12-312020-09-302020-08-03
Value52.352.452.4
Percentage of ProxyAgreementPercentageOfVotingInterests100.0100.0100.0

tmus:ProxyAgreementPercentageOfVotingInterests dei:LegalEntity, us-gaap:SubsequentEventType

tmus:DeutscheTelekomAG, us-gaap:SubsequentEvent


Proxy
Period End2020-08-03
Value0.524
Percentage of ProxyAgreementPercentageOfVotingInterests1.0

tmus:PurchaseObligationDueInNextRollingTwelveMonths

tmus:PurchaseObligationDueInNextRollingTwelveMonths


Purchase
Period End2021-06-302021-03-312020-12-312020-09-30
Value3900390050004200
Percentage of PurchaseObligationDueInNextRollingTwelveMonths100.0100.0100.0100.0

tmus:PurchaseObligationDueInRollingAfterYearFive

tmus:PurchaseObligationDueInRollingAfterYearFive


Purchase
Period End2021-06-302021-03-312020-12-312020-09-30
Value1600160017001500
Percentage of PurchaseObligationDueInRollingAfterYearFive100.0100.0100.0100.0

tmus:PurchaseObligationDueInRollingYearFourAndFive

tmus:PurchaseObligationDueInRollingYearFourAndFive


Purchase
Period End2021-06-302021-03-312020-12-312020-09-30
Value2300220024001600
Percentage of PurchaseObligationDueInRollingYearFourAndFive100.0100.0100.0100.0

tmus:PurchaseObligationDueInRollingYearTwoAndThree

tmus:PurchaseObligationDueInRollingYearTwoAndThree


Purchase
Period End2021-06-302021-03-312020-12-312020-09-30
Value4500430045003400
Percentage of PurchaseObligationDueInRollingYearTwoAndThree100.0100.0100.0100.0

tmus:ReceivableWithImputedInterestDiscountAndAllowancesPercentageOfGrossAccountsReceivable

tmus:ReceivableWithImputedInterestDiscountAndAllowancesPercentageOfGrossAccountsReceivable


Receivable
Period End2020-09-302020-06-302020-03-312019-12-31
Value7.80.0780.0870.07
Percentage of ReceivableWithImputedInterestDiscountAndAllowancesPercentageOfGrossAccountsReceivable100.0100.0100.0100.0

tmus:RevolvingReceivablesFacilityMaximumBorrowingCapacity us-gaap:ConsolidatedEntities, us-gaap:TransactionType

tmus:RevolvingReceivablesFacilityMaximumBorrowingCapacity

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Revolving
Period End2021-06-30
Value950
Percentage of RevolvingReceivablesFacilityMaximumBorrowingCapacity100.0

tmus:RevolvingReceivablesFacilityMaximumBorrowingCapacity us-gaap:TransactionType

tmus:EIPSecuritizationArrangement


Revolving
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312017-08-312016-09-302016-06-302015-12-31
Value130013001300130013001300130013001300120013001300800
Percentage of RevolvingReceivablesFacilityMaximumBorrowingCapacity136.80.00.00.00.00.00.00.00.00.00.00.00.0

tmus:RevolvingReceivablesFacilityOutstandingBorrowings us-gaap:ConsolidatedEntities, us-gaap:TransactionType

tmus:RevolvingReceivablesFacilityOutstandingBorrowings

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Revolving
Period End2021-06-302021-03-312020-12-312019-12-31
Value775775772924
Percentage of RevolvingReceivablesFacilityOutstandingBorrowings100.0100.0100.0100.0

tmus:RevolvingReceivablesFacilityOutstandingBorrowings us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities, us-gaap:TransactionType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, tmus:FactoringArrangement


Revolving
Period End2020-09-302019-12-31
Value828924
Percentage of RevolvingReceivablesFacilityOutstandingBorrowings0.0100.0

tmus:SaleLeasebackTransactionTowerObligation

tmus:SaleLeasebackTransactionTowerObligation


Sale
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value291929743028307931302236
Percentage of SaleLeasebackTransactionTowerObligation100.0100.0100.0100.0100.0100.0

tmus:UnamortizedImputedDiscountandAllowanceforCreditLosses

tmus:UnamortizedImputedDiscountandAllowanceforCreditLosses


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-09-302015-06-302014-12-31
Value720779799745674538460456501508516459454457482449417404418449422441448
Percentage of UnamortizedImputedDiscountandAllowanceforCreditLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

tmus:UnamortizedImputedDiscountandAllowanceforCreditLosses us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

tmus:AccountsReceivablesGross


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value12314319420818369616161636770707686868310010211683
Percentage of UnamortizedImputedDiscountandAllowanceforCreditLosses17.118.424.327.927.212.813.313.412.212.413.015.315.416.617.819.219.924.824.425.818.5

tmus:EquipmentInstallmentPlanReceivable


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value597636605537491469399395440445449389384381396363334304316287314323333422441433448336125
Percentage of UnamortizedImputedDiscountandAllowanceforCreditLosses82.981.675.772.172.887.286.786.687.887.687.084.784.683.482.280.880.175.275.60.00.00.074.2100.0100.00.0100.00.00.0

tmus:UnrecognizedTaxBenefitsIndirectTaxEffectsExcluded

tmus:UnrecognizedTaxBenefitsIndirectTaxEffectsExcluded


Unrecognized
Period End2020-12-31
Value144
Percentage of UnrecognizedTaxBenefitsIndirectTaxEffectsExcluded100.0

us-gaap:AccountsPayableRelatedPartiesCurrent

us-gaap:AccountsPayableRelatedPartiesCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value105108157135126228187252198242200226190291182288155125
Percentage of AccountsPayableRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccountsPayableTradeCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302013-12-312012-12-312011-12-312010-12-31
Value3855455955643862496043225487618251636137532241873026196211174
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302013-12-312012-12-312011-12-312010-12-31
Value1149785116311511182802709614559494605624534415765
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedAdvertisingCurrent

us-gaap:AccruedAdvertisingCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302013-12-312012-12-31
Value6510913510714012776464477535942130
Percentage of AccruedAdvertisingCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedSalesCommissionCurrent

us-gaap:AccruedSalesCommissionCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302013-12-312012-12-31
Value257327399321338251243324159190179144118138
Percentage of AccruedSalesCommissionCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value1231431942081836961616163677070768686831001021111251161161019188834654734203813303220.3310.4760.490.6390.5590.6010.6110.4942.9062.4942.0454.106
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value18171751174965960956253948339038873655963
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation us-gaap:BalanceSheetLocation

us-gaap:OtherCurrentLiabilities


Asset
Period End2020-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value140.03.016411790.0
Percentage of AssetRetirementObligation0.80.00.53.08.545.90.0

us-gaap:OtherLiabilities


Asset
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value180317511749659609559523442211388
Percentage of AssetRetirementObligation99.2100.0100.0100.0100.099.597.091.554.1100.0

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired dei:LegalEntity, us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

tmus:DeutscheTelekomAG, tmus:SprintCorporation


Business
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-04-29
Value43.643.643.60.4360.4360.4150.4170.417
Percentage of BusinessAcquisitionPercentageOfVotingInterestsAcquired100.0100.0100.0100.0100.0100.0100.0100.0

tmus:SoftBankGroupCorp., tmus:SprintCorporation


Business
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-04-29
Value24.724.724.70.2470.2470.2720.2740.274
Percentage of BusinessAcquisitionPercentageOfVotingInterestsAcquired56.756.756.756.756.765.565.765.7

us-gaap:CapitalizedContractCostNet

us-gaap:CapitalizedContractCostNet


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1200120011001000939887906831765719644
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedCostsAssetRetirementCosts

us-gaap:CapitalizedCostsAssetRetirementCosts


Capitalized
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value91296511001591942202582419524064
Percentage of CapitalizedCostsAssetRetirementCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNet


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2672752782431975963554244515269104140
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value20620520418716845504451
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value789775824783845534560550571615645649677718718
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

us-gaap:DebtInstrumentCarryingAmount

tmus:A1500SeniorSecuredNotesDue2026


Debt
Period End2020-12-31
Value1000
Percentage of DebtInstrumentCarryingAmount100.0

tmus:A2050SeniorSecuredNotesDue2028


Debt
Period End2020-12-31
Value1750
Percentage of DebtInstrumentCarryingAmount175.0

tmus:A2250SeniorSecuredNotesDue2031


Debt
Period End2020-12-31
Value1000
Percentage of DebtInstrumentCarryingAmount100.0

tmus:A2550SeniorSecuredNotesDue2031


Debt
Period End2020-12-31
Value2500
Percentage of DebtInstrumentCarryingAmount250.0

tmus:A3000SeniorSecuredNotesDue2041


Debt
Period End2020-12-31
Value2500
Percentage of DebtInstrumentCarryingAmount250.0

tmus:A3300SeniorSecuredNotesDue2051


Debt
Period End2020-12-31
Value3000
Percentage of DebtInstrumentCarryingAmount300.0

tmus:A3500SeniorSecuredNotesDue2025


Debt
Period End2020-12-31
Value3000
Percentage of DebtInstrumentCarryingAmount300.0

tmus:A3600SeniorSecuredNotesDue2060


Debt
Period End2020-12-31
Value1000
Percentage of DebtInstrumentCarryingAmount100.0

tmus:A3750SeniorSecuredNotesDue2027


Debt
Period End2020-12-31
Value4000
Percentage of DebtInstrumentCarryingAmount400.0

tmus:A3875SeniorSecuredNotesDue2030


Debt
Period End2020-12-31
Value7000
Percentage of DebtInstrumentCarryingAmount700.0

tmus:A4375SeniorSecuredNotesDue2040


Debt
Period End2020-12-31
Value2000
Percentage of DebtInstrumentCarryingAmount200.0

tmus:A4500SeniorSecuredNotesDue2050


Debt
Period End2020-12-31
Value3000
Percentage of DebtInstrumentCarryingAmount300.0

tmus:SeniorNotesDue202111500


Debt
Period End2020-12-31
Value1000
Percentage of DebtInstrumentCarryingAmount100.0

tmus:SeniorNotesDue20217250


Debt
Period End2020-12-31
Value2250
Percentage of DebtInstrumentCarryingAmount225.0

tmus:SeniorNotesDue20226000


Debt
Period End2020-12-31
Value2280
Percentage of DebtInstrumentCarryingAmount228.0

tmus:SeniorNotesDue20237875


Debt
Period End2020-12-31
Value4250
Percentage of DebtInstrumentCarryingAmount425.0

tmus:SeniorNotesDue20247125


Debt
Period End2020-12-31
Value2500
Percentage of DebtInstrumentCarryingAmount250.0

tmus:SeniorNotesDue20257625


Debt
Period End2020-12-31
Value1500
Percentage of DebtInstrumentCarryingAmount150.0

tmus:SeniorNotesDue20267625


Debt
Period End2020-12-31
Value1500
Percentage of DebtInstrumentCarryingAmount150.0

tmus:SeniorNotesDue20286875


Debt
Period End2020-12-31
Value2475
Percentage of DebtInstrumentCarryingAmount247.5

tmus:SeniorNotesDue20328750


Debt
Period End2020-12-31
Value2000
Percentage of DebtInstrumentCarryingAmount200.0

tmus:SeniorSecuredSeries20161A1NotesDue20213360


Debt
Period End2020-12-31
Value656
Percentage of DebtInstrumentCarryingAmount65.6

tmus:SeniorSecuredSeries20181A1NotesDue20254738


Debt
Period End2020-12-31
Value2100
Percentage of DebtInstrumentCarryingAmount210.0

tmus:SeniorSecuredSeries20181A2NotesDue20285152


Debt
Period End2020-12-31
Value1838
Percentage of DebtInstrumentCarryingAmount183.8

us-gaap:OtherDebtSecurities


Debt
Period End2020-12-312019-12-31
Value24025
Percentage of DebtInstrumentCarryingAmount24.00.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage

us-gaap:DebtInstrumentInterestRateEffectivePercentage


Debt
Period End2021-03-312020-12-312020-03-312019-12-31
Value4.34.65.25.2
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0100.0100.0100.0

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DebtInstrumentRepurchasedFaceAmount

us-gaap:LongTermDebt, srt:AffiliatedEntity


Debt
Period End2020-09-302020-06-302018-09-30
Value604160410.0
Percentage of DebtInstrumentRepurchasedFaceAmount100.0100.00.0

us-gaap:ShortTermDebt, srt:AffiliatedEntity


Debt
Period End2020-09-302020-06-302018-09-30
Value323520000.0
Percentage of DebtInstrumentRepurchasedFaceAmount53.633.10.0

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation

tmus:ThirdParty, us-gaap:LongTermDebt


Debt
Period End2021-06-302021-03-312020-06-302018-09-30
Value474219640.00.0
Percentage of DebtInstrumentRepurchasedFaceAmount0.00.00.00.0

tmus:ThirdParty, us-gaap:ShortTermDebt


Debt
Period End2020-09-302020-06-302018-09-30
Value21413187493424
Percentage of DebtInstrumentRepurchasedFaceAmount354.5310.40.0

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:CounterpartyName, us-gaap:DebtInstrument

tmus:ThirdParty, tmus:TotalDebt


Debt
Period End2021-06-302021-03-312020-09-302020-06-30
Value474219642141318749
Percentage of DebtInstrumentRepurchasedFaceAmount0.00.0354.5310.4

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:DebtInstrument

tmus:A6.500SeniorNotesdue2026


Debt
Period End2021-03-27
Value2000
Percentage of DebtInstrumentRepurchasedFaceAmount0.0

tmus:TotalDebt


Debt
Period End2021-06-302021-03-312020-09-302020-06-30
Value474219643068926790
Percentage of DebtInstrumentRepurchasedFaceAmount0.00.0508.0443.5

tmus:TotalOfSecuredBridgeLoanFacilityAndSeniorNotesToThirdPartiesRedeemed


Debt
Period End2020-09-30
Value21700
Percentage of DebtInstrumentRepurchasedFaceAmount359.2

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

tmus:A6.375SeniorNotesdue2025, us-gaap:SeniorNotes


Debt
Period End2020-09-30
Value1700
Percentage of DebtInstrumentRepurchasedFaceAmount28.1

tmus:A6.500SeniorNotesdue2024, us-gaap:SeniorNotes


Debt
Period End2020-09-30
Value1000
Percentage of DebtInstrumentRepurchasedFaceAmount16.6

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType

tmus:SeniorNotesDue20215125, us-gaap:SeniorNotes, srt:AffiliatedEntity, us-gaap:SubsequentEvent


Debt
Period End2020-07-04
Value1250
Percentage of DebtInstrumentRepurchasedFaceAmount0.0

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

tmus:A6.500SeniorNotesdue2024, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Debt
Period End2020-07-04
Value1000
Percentage of DebtInstrumentRepurchasedFaceAmount0.0

tmus:SeniorSecuredSeries20161A1NotesDue20213360, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Debt
Period End2021-08-20
Value220
Percentage of DebtInstrumentRepurchasedFaceAmount0.0

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DebtInstrumentUnamortizedDiscount


Debt
Period End2020-12-312017-12-312016-12-312015-12-312014-12-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1970.08.0-10.00.07.2327.5147.7918.0698.3358.6028.8629.1247.053
Percentage of DebtInstrumentUnamortizedDiscount100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscount us-gaap:RelatedPartyTransactionsByRelatedParty

srt:AffiliatedEntity


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value20536473
Percentage of DebtInstrumentUnamortizedDiscount10.20.00.00.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet


Debt
Period End2020-12-31
Value670
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet us-gaap:DebtInstrument

tmus:A2250SeniorNotesDue2026


Debt
Period End2021-01-14
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2250SeniorNotesDue2026IssuedJanuary142021


Debt
Period End2021-01-14
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2250SeniorNotesDue2026IssuedMay132021


Debt
Period End2021-05-13
Value-2.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2250SeniorSecuredNotesDue2031


Debt
Period End2020-12-31
Value5.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.7

tmus:A2625SeniorNotesDue2026


Debt
Period End2021-03-23
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2625SeniorNotesDue2026IssuedMarch232021


Debt
Period End2021-03-23
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2625SeniorNotesDue2029


Debt
Period End2021-01-14
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2625SeniorNotesDue2029IssuedJanuary142021


Debt
Period End2021-01-14
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2875SeniorNotesDue2031


Debt
Period End2021-01-14
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A2875SeniorNotesDue2031IssuedJanuary142021


Debt
Period End2021-01-14
Value-6.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A3.375Notesdue2029


Debt
Period End2021-03-23
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A3375SeniorNotesDue2029IssuedMarch232021


Debt
Period End2021-03-23
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A3375SeniorNotesDue2029IssuedMay132021


Debt
Period End2021-05-13
Value6.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A3500SeniorNotesDue2031


Debt
Period End2021-03-23
Value-7.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A3500SeniorNotesDue2031IssuedMarch232021


Debt
Period End2021-03-23
Value-8.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:A3500SeniorNotesDue2031IssuedMay132021


Debt
Period End2021-05-13
Value6.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.0

tmus:SecuredLoanFacilitiesIssuedTotal


Debt
Period End2020-12-31
Value364
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet54.3

tmus:SecuredTermLoanFacilityDue2027


Debt
Period End2020-12-31
Value107
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet16.0

tmus:SeniorNotesDue20261500


Debt
Period End2020-12-31
Value5.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.7

tmus:SeniorNotesDue20282050IssuedJune242020


Debt
Period End2020-12-31
Value8.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet1.2

tmus:SeniorNotesDue20282050IssuedOctober62020


Debt
Period End2020-12-31
Value-11.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet-1.6

tmus:SeniorNotesDue20312550IssuedJune242020


Debt
Period End2020-12-31
Value12
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet1.8

tmus:SeniorNotesDue20312550IssuedOctober62020


Debt
Period End2020-12-31
Value-29.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet-4.3

tmus:SeniorNotesDue20413000IssuedOctober282020


Debt
Period End2020-12-31
Value38
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet5.7

tmus:SeniorNotesDue20413000IssuedOctober62020


Debt
Period End2020-12-31
Value15
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet2.2

tmus:SeniorNotesDue20513300IssuedOctober282020


Debt
Period End2020-12-31
Value58
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet8.7

tmus:SeniorNotesDue20513300IssuedOctober62020


Debt
Period End2020-12-31
Value16
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet2.4

tmus:SeniorNotesDue20603600


Debt
Period End2020-12-31
Value11
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet1.6

tmus:SeniorSecuredNotesDue20253500


Debt
Period End2020-12-31
Value12
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet1.8

tmus:SeniorSecuredNotesDue20273750


Debt
Period End2020-12-31
Value17
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet2.5

tmus:SeniorSecuredNotesDue20303875


Debt
Period End2020-12-31
Value78
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet11.6

tmus:SeniorSecuredNotesDue20404375


Debt
Period End2020-12-31
Value47
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet7.0

tmus:SeniorSecuredNotesDue20504500


Debt
Period End2020-12-31
Value24
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet3.6

tmus:SeniorSecuredNotesIssuedTotal


Debt
Period End2021-06-302021-03-312020-12-31
Value-32.0-42.0306
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet0.00.045.7

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet us-gaap:DebtInstrument, us-gaap:ShortTermDebtType

tmus:SecuredBridgeLoanFacility, us-gaap:BridgeLoan


Debt
Period End2020-12-31
Value257
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet38.4

us-gaap:DebtInstrumentUnamortizedPremium

us-gaap:DebtInstrumentUnamortizedPremium


Debt
Period End2020-12-312018-12-312017-12-312017-05-092016-12-312015-12-312014-12-312013-12-31
Value21970.07864212250286410
Percentage of DebtInstrumentUnamortizedPremium100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2444656192323
Percentage of DebtIssuanceCostsLineOfCreditArrangementsNet100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsGross

us-gaap:DeferredFinanceCostsGross


Deferred
Period End2020-09-302020-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-16
Value5675676.06.06.06.05.05.05.05.0
Percentage of DeferredFinanceCostsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value26173115978200696788158302781479826053
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value170856119393837034450482445434713676814559
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4540823152615761442199723542809463604361
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2665903620403430317295274121314
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2020-12-31
Value90
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value411331340298284349295224201812
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:DomesticCountry, us-gaap:Research


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value56934731219817418672
Percentage of DeferredTaxAssetsTaxCreditCarryforwards138.4104.891.866.461.353.324.4

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value13486596686671058928454362256
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value912194041119178297418424370326
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
<
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value504289