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Income Taxes - Additional information (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Taxes |  |  |
Tax loss and credit carryforwards | $ 59,000,000 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards | $ 41,000,000 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards |
Total income tax expense (in percentage) | 25.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 25.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 27.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Material discrete tax items reflected in the effective tax rate | 0 tdc_MaterialDiscreteTaxItemsReflectedInEffectiveTaxRate |  |
Other tax expense/ benefit | 4,000,000 us-gaap_OtherTaxExpenseBenefit |  |
Net operating loss and tax credit carryforwards | 70,000,000 tdc_DeferredTaxAssetsTaxCreditCarryforwardsAndNetOperatingLossCarryforwards |  |
Research and development tax credit carryforwards | 31,000,000 us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch |  |
Tax credit carryforwards recognized as deferred tax assets on balance sheet | 11,000,000 tdc_TaxCreditCarryforwardsRecognizedAsDeferredTaxAssetsOnBalanceSheet |  |
Deferred tax asset valuation allowance | 20,000,000 us-gaap_DeferredTaxAssetsValuationAllowance | 13,000,000 us-gaap_DeferredTaxAssetsValuationAllowance |
Deferred tax liability from foreign subsidiaries | 1,000,000,000 us-gaap_UndistributedEarningsOfForeignSubsidiaries |  |
Tax liability related to uncertain tax positions | 36,000,000 us-gaap_UnrecognizedTaxBenefits | 34,000,000 us-gaap_UnrecognizedTaxBenefits | 31,000,000 us-gaap_UnrecognizedTaxBenefits
Uncertain tax positions recognized as noncurrent liability on balance sheet | 18,000,000 tdc_UncertainTaxPositionsRecognizedAsNoncurrentLiabilityOnBalanceSheet |  |
Uncertain tax positions related to business acquisitions not recognized on balance sheet | 15,000,000 tdc_UncertainTaxPositionsRelatedToBusinessAcquisitionsNotRecognizedOnBalanceSheet |  |
Interest accruals related to uncertain tax liabilities | 2,000,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued |  |
United States And Certain Foreign Jurisdictions |  |  |
Income Taxes |  |  |
Net operating loss carryforwards in the United States and certain foreign jurisdictions | 18,000,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = tdc_UnitedStatesAndCertainForeignJurisdictionsMember |  |
Operating Loss Carryforwards Expiration Year | 2015 |  |
Capital Loss Carryforward [Member] |  |  |
Income Taxes |  |  |
Tax Credit Carryforward, Amount | 10,000,000 us-gaap_TaxCreditCarryforwardAmount / us-gaap_TaxCreditCarryforwardAxis = us-gaap_CapitalLossCarryforwardMember |  |
Research Tax Credit Carryforward | State and Local Jurisdiction |  |  |
Income Taxes |  |  |
Tax Credit Carryforward, Percentage of Credits Indefinite | 0.90 tdc_TaxCreditCarryforwardPercentageofCreditsIndefinite / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / us-gaap_TaxCreditCarryforwardAxis = us-gaap_ResearchMember |  |
Tax Credit Carryforward, Valuation Allowance | 20,000,000 us-gaap_TaxCreditCarryforwardValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / us-gaap_TaxCreditCarryforwardAxis = us-gaap_ResearchMember |  |
Current Income Taxes Payable |  |  |
Income Taxes |  |  |
Tax liability related to uncertain tax positions | $ 3,000,000 us-gaap_UnrecognizedTaxBenefits / us-gaap_BalanceSheetLocationAxis = tdc_CurrentIncomeTaxesPayableMember |  |

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