This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period for potential significant acquisitions. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Additionally these costs include amortization of the fair-value write-up of inventory and the depreciation of the fair-value write-up of property, plant and equipment.

No definition available.

+ Details

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

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

+ Details

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- Details

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

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of positions eliminated during the period as a result of restructuring activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=txn_NationalSemiconductorMember
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Acquisition charges (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended			48 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges	$ 82	$ 83	$ 82	$ 83	$ 84	$ 86	$ 86	$ 86	$ 330	$ 341	$ 450
National Semiconductor
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition-related charges									330	341	471
Number of jobs eliminated (in jobs)											350
National Semiconductor \| Amortization of intangible assets
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges									319	323	325
National Semiconductor \| Stock-based compensation
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges									11	11	17
National Semiconductor \| Retention bonuses
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges									0	7	57
National Semiconductor \| Severance and other benefits
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges									0	0	16
National Semiconductor \| Transaction and other costs
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges									0	0	35
National Semiconductor \| As recorded in Acquisition charges
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges									330	341	450
National Semiconductor \| As recorded in COR
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition-related charges									0	0	21
National Semiconductor \| Acquisition Costs, Severance and other benefits
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition charges												86
Payments against cumulative charges related to National												84
National Semiconductor \| Acquisition Costs, Severance and other benefits, Change of control
Business Combination, Separately Recognized Transactions [Line Items]
Payments against cumulative charges related to National												$ 41