XML 54 R40.htm IDEA: XBRL DOCUMENT
v3.20.4

Basis of Presentation and Significant Accounting Policies and Practices - Additional Information (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Advertising expense | $ 28 | $ 30 | $ 34
Antidilutive securities excluded from computation of earnings per share, Amount (in shares) | 4 | 6 | 4
Maximum length to maturity of a security, from the investment date, where it is classified as cash and cash equivalent | 90 days |  |
Length to maturity from the investment date of a security where the length of time is too short to be classified as a short-term investment | 90 days |  |

X
- Definition Length to maturity from the investment date of a security where the length of time is too short to be classified as a short-term investment. + References No definition available. + Details
Name: | txn_LengthToMaturityFromInvestmentDateOfSecurityWhereLengthOfTimeIsTooShortToBeClassifiedAsShortTermInvestment
Namespace Prefix: | txn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum length to maturity of a security, from the investment date, where it is classified as cash and cash equivalent. + References No definition available. + Details
Name: | txn_MaximumLengthToMaturityOfSecurityWhereItIsClassifiedAsCashAndCashEquivalent
Namespace Prefix: | txn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration