-- None. No documentation exists for this element. --

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- Definition

-- None. No documentation exists for this element. --

+ Details

Name:	txn_AmountsIncludedInAociFromAvailableForSaleSecuritiesAbstract
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- Definition

This item represents the fair value of debt securities which are expected to mature after one year and through three years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

+ Details

Name:	txn_AvailableforsaleSecuritiesDebtMaturitiesAfterOneThroughThreeYearsFairValue
Namespace Prefix:	txn
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This item represents the fair value of debt securities which are expected to mature after three years from the balance sheet date which are categorized neither as held-to-maturity nor trading securities.

+ Details

Name:	txn_AvailableforsaleSecuritiesDebtMaturitiesAfterThreeYearsFairValue
Namespace Prefix:	txn
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash inflow associated with the sales, redemptions and maturities of debt and equity securities classified as available-for-sale securities, excluding cash equivalents.

+ Details

Name:	txn_ProceedsFromSaleOfAvailableforsaleSecuritiesPriorToScheduledMaturity
Namespace Prefix:	txn
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This item represents the fair value of debt securities which are expected to mature within one year of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 20
-Subparagraph a

+ Details

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- Definition

This item represents the gross unrealized gains for securities which are categorized neither as held-to-maturity nor trading securities. Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 22

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13, 19

+ Details

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- Definition

This item represents the gross unrealized losses for securities which are categorized neither as held-to-maturity nor trading securities. Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 16

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 22

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13, 19

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7
-Footnote 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7, 8, 9, 10

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 8
-Footnote 2

+ Details

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- Definition

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.

+ Details

Name:	us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
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Data Type:	xbrli:stringItemType
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- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ Details

Name:	us-gaap_LongTermInvestments
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Subparagraph g
-Article 7

+ Details

Name:	us-gaap_ShortTermInvestments
Namespace Prefix:	us-gaap
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Valuation of debt and equity investments and certain liabilities Investments at fair value (Details) (USD $)	6 Months Ended																									3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Jun. 30, 2011 Measured at fair value [Member]	Dec. 31, 2010 Measured at fair value [Member]	Jun. 30, 2011 Measured at fair value [Member] Available-for-sale [Member] Money market funds [Member]	Dec. 31, 2010 Measured at fair value [Member] Available-for-sale [Member] Money market funds [Member]	Jun. 30, 2011 Measured at fair value [Member] Available-for-sale [Member] Corporate Obligations [Member]	Dec. 31, 2010 Measured at fair value [Member] Available-for-sale [Member] Corporate Obligations [Member]	Jun. 30, 2011 Measured at fair value [Member] Available-for-sale [Member] U.S. government agency and treasury securities [Member]	Dec. 31, 2010 Measured at fair value [Member] Available-for-sale [Member] U.S. government agency and treasury securities [Member]	Jun. 30, 2011 Measured at fair value [Member] Available-for-sale [Member] Auction Rate Securities [Member]	Dec. 31, 2010 Measured at fair value [Member] Available-for-sale [Member] Auction Rate Securities [Member]	Jun. 30, 2011 Measured at fair value [Member] Trading [Member] Auction Rate Securities [Member]	Dec. 31, 2010 Measured at fair value [Member] Trading [Member] Auction Rate Securities [Member]	Jun. 30, 2011 Measured at fair value [Member] Trading [Member] Mutual funds [Member]	Dec. 31, 2010 Measured at fair value [Member] Trading [Member] Mutual funds [Member]	Jun. 30, 2011 Other measurement basis [Member]	Dec. 31, 2010 Other measurement basis [Member]	Jun. 30, 2011 Other measurement basis [Member] Equity method investments [Member]	Dec. 31, 2010 Other measurement basis [Member] Equity method investments [Member]	Jun. 30, 2011 Other measurement basis [Member] Cost method investments [Member]	Dec. 31, 2010 Other measurement basis [Member] Cost method investments [Member]	Jun. 30, 2011 Other measurement basis [Member] Cash on hand [Member]	Dec. 31, 2010 Other measurement basis [Member] Cash on hand [Member]	Jun. 30, 2011 Cash and cash equivalents [Member]	Dec. 31, 2010 Cash and cash equivalents [Member]	Jun. 30, 2011 Short-term Investments [Member]	Dec. 31, 2010 Short-term Investments [Member]	Jun. 30, 2011 Long-term Investments [Member]	Dec. 31, 2010 Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents				$ 4,247,000,000	$ 1,066,000,000	$ 434,000,000	$ 167,000,000	$ 795,000,000	$ 44,000,000	$ 3,018,000,000	$ 855,000,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 4,501,000,000	$ 1,319,000,000	$ 0	$ 0	$ 0	$ 0	$ 254,000,000	$ 253,000,000
Short-term Investments	1,899,000,000		1,753,000,000	1,899,000,000	1,753,000,000	0	0	270,000,000	649,000,000	1,556,000,000	1,081,000,000	0	23,000,000	73,000,000	0	0	0	1,899,000,000	1,753,000,000	0	0	0	0	0	0
Long-term Investments	334,000,000		453,000,000	272,000,000	396,000,000	0	0	0	0	0	0	44,000,000	257,000,000	94,000,000	0	134,000,000	139,000,000	334,000,000	453,000,000	40,000,000	36,000,000	22,000,000	21,000,000	0	0
Amounts included in AOCI from available for sale securities: [Abstract]
Unrealized gains (pre-tax)																										0	0	1,000,000	1,000,000	0	0
Unrealized losses (pre-tax)																										0	0	0	1,000,000	2,000,000	22,000,000
Proceeds from sales, redemptions and maturities of short-term available-for-sale securities	1,620,000,000	1,800,000,000
Aggregate maturities of investments in money market funds and other debt securities classified as available for sale [Abstract]
One year or less	5,826,000,000
One to three years	247,000,000
Greater than three years	$ 44,000,000