Name:	txn_DefinedBenefitPensionPlanFormulaHighestConsecutivePeriodOfCompensation
Namespace Prefix:	txn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

This element represents the dividends paid on the corporate shares held by the defined contribution plans at year-end.

No definition available.

Name:	txn_DefinedContributionPlanDividendsPaidOnSharesHeldInPlan
Namespace Prefix:	txn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

This element represents the value of the corporate shares held by the non-US retirement plans at year-end.

No definition available.

Name:	txn_DefinedContributionPlanFairValueOfSharesHeldInNonUsPlan
Namespace Prefix:	txn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

This element represents the number of corporate shares held by the defined contributions plans at year end.

No definition available.

Name:	txn_DefinedContributionPlanNumberOfSharesHeldInPlan
Namespace Prefix:	txn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

This element represents the value of the corporate shares held by the defined contribution plans at year-end.

No definition available.

Name:	txn_DefinedContributionPlanValueOfSharesHeldInPlan
Namespace Prefix:	txn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The length of time certain gains and losses are considered when determining the market-related value of assets related to the U.S. Qualified pension and retiree health care plans.

No definition available.

Name:	txn_LengthOfTimeCertainGainsAndLossesAreConsideredWhenDeterminingMarketRelatedValueOfAssetsRelatedToUnitedStatesPensionAndRetireeHealthCarePlans
Namespace Prefix:	txn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Name:	us-gaap_DeferredCompensationPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

Name:	us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of employer security in which defined benefit plan asset is invested. Includes, but is not limited to, security issued or managed by related party of employer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Name:	us-gaap_DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Indicates line item in statement of income or comprehensive income that includes components of net periodic benefit cost (credit), excluding service cost component, for defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Name:	us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostStatementOfIncomeOrComprehensiveIncomeExtensibleList
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of cost for defined contribution plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Percentage employer matches of the employee's percentage contribution matched.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Amount of the liabilities, classified as other, for deferred compensation arrangements payable after one year or the operating cycle, if longer.

No definition available.

Name:	us-gaap_OtherDeferredCompensationArrangementsLiabilityClassifiedNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanEquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_DefinedBenefitPostretirementHealthCoverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RetirementPlanNameAxis=txn_BeforeNovemberNineteenNinetySevenElectedToContinueToAccrueABenefitInQualifiedDefinedBenefitPensionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: