Name:	txn_DefinedBenefitPensionPlanFormulaHighestConsecutivePeriodOfCompensation
Namespace Prefix:	txn_
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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
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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
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Data Type:	xbrli:durationItemType
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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

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Amount of decrease in accumulated postretirement benefit obligation from one-percentage-point decrease in assumed health care cost trend rate.

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Amount of decrease in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point decrease in assumed health care cost trend rate.

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Amount of increase in accumulated postretirement benefit obligation from one-percentage-point increase in assumed health care cost trend rate.

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Amount of increase in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point increase in assumed health care cost trend rate.

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Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

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

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Name:	us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
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Number of shares of employer stock in which defined benefit plan asset is invested. Includes, but is not limited to, stock issued or managed by related party of employer.

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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
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Amount of cost for defined contribution plan.

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Name:	us-gaap_DefinedContributionPlanCostRecognized
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Data Type:	xbrli:monetaryItemType
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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:	num:percentItemType
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Period Type:	duration

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

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Description of defined contribution pension and other postretirement plans. Includes, but is not limited to, plan utilized, employee group covered, and employer matching contributions.

No definition available.

Name:	us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans
Namespace Prefix:	us-gaap_
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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_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
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Balance Type:
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Data Type:	na
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