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Postretirement Benefit Plans - Additional Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Description of defined contribution plans | Both defined contribution plans offer an employer-matching savings option that allows employees to make pre-tax contributions to various investment choices. Employees who elected to continue accruing a benefit in the qualified defined benefit pension plans may also participate in the defined contribution plan, where employer-matching contributions are provided for up to 2 percent of the employee’s annual eligible earnings. Employees who elected not to continue accruing a benefit in the defined benefit pension plans, and employees hired after November 1997 and through December 31, 2003, may participate in the enhanced defined contribution plan. This plan provides for a fixed employer contribution of 2 percent of the employee’s annual eligible earnings, plus an employer-matching contribution of up to 4 percent of the employee’s annual eligible earnings. Employees hired after December 31, 2003, do not receive the fixed employer contribution of 2 percent of the employee’s annual eligible earnings. |  |
Defined benefit pension plan formula, highest consecutive years of compensation (in years) | 5 years |  |
Value of the company shares held by the non-U.S. retirement plans at year-end | $ 20,000,000 | $ 17,000,000 |
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 (in years) | 3 years |  |
Expected contribution to retirement benefit plans in next fiscal year | $ 100,000,000 |  |
Defined benefit plan assets directly invested in TI common stock | 0 |  |
Effect of a one-percentage point change in assumed health care cost trend rates [Abstract] |  |  |
Liability to participants of the deferred compensation plan | $ 218,000,000 |  |
Deferred compensation plan assets | 201,000,000 |  |
U.S. defined benefit plan |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Accumulated benefit obligation | 926,000,000 | 948,000,000 |
Future amortization of net actuarial loss | 15,000,000 |  |
Future amortization of unrecognized prior service credit | 0 |  |
Non-U.S. defined benefit plan |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Accumulated benefit obligation | 2,220,000,000 | $ 2,090,000,000 |
Future amortization of net actuarial loss | 27,000,000 |  |
Future amortization of unrecognized prior service credit | (2,000,000) |  |
U.S. retiree health care plan |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Future amortization of net actuarial loss | 4,000,000 |  |
Future amortization of unrecognized prior service credit | (4,000,000) |  |
Effect of a one-percentage point change in assumed health care cost trend rates [Abstract] |  |  |
Effect of a one percentage point increase on accumulated postretirement benefit obligation (in hundredths) | 2,000,000 |  |
Effect of a one percentage point decrease on accumulated postretirement benefit obligation (in hundredths) | 2,000,000 |  |
U.S. retiree health care plan | Maximum |  |  |
Effect of a one-percentage point change in assumed health care cost trend rates [Abstract] |  |  |
Effect of a one percentage point increase on service and interest cost components (in hundredths) | 1,000,000 |  |
Effect of a one percentage point decrease on service and interest cost components (in hundredths) | $ 1,000,000 |  |
United States |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Number of company shares held by the U.S. defined contribution plans at year-end (in shares) | 11,000,000 | 13,000,000 |
Value of the company shares held by the U.S. defined contribution plans at year-end | $ 796,000,000 | $ 704,000,000 |
Dividends paid on the company shares held by the U.S. defined contribution plans at year-end | 20,000,000 | 19,000,000 |
Aggregate expense for the U.S. defined contribution plans | $ 60,000,000 | $ 60,000,000 | $ 60,000,000
Defined contribution plan, also still accruing defined benefits |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Defined contribution plan, employer matching contribution (percent) | 2.00% |  |
Enhanced defined contribution plan |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Defined contribution plan, employer matching contribution (percent) | 4.00% |  |
Defined contribution plan, employer fixed contribution (percent) | 2.00% |  |
Defined contribution plan |  |  |
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Defined contribution plan, employer matching contribution (percent) | 4.00% |  |

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- Definition The formula for determining pension benefits is based upon the highest compensation during a period of consecutive years. + References No definition available. + Details
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- Definition This element represents the dividends paid on the corporate shares held by the defined contribution plans at year-end. + References No definition available. + Details
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- Definition This element represents the value of the corporate shares held by the non-US retirement plans at year-end. + References No definition available. + Details
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- Definition This element represents the number of corporate shares held by the defined contributions plans at year end. + References No definition available. + Details
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- Definition This element represents the value of the corporate shares held by the defined contribution plans at year-end. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
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- Definition The number of employer shares or related party shares included in plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (n) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + 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. + References No definition available. + Details
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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition Description of the terms and benefits provided by the employer's defined contribution plans. A defined contribution plan provides benefits in return for services rendered, provides an individual account for each participant, and has terms that specify how contributions to the individual's account are to be determined rather than the amount of benefits the individual is to receive. Under a defined contribution pension plan, the benefits a participant will receive depend solely on the amount contributed to the participant's account, the returns earned on investments of those contributions, and forfeitures of other participants' benefits that may be allocated to such participant's account. A description of the plan(s) including employee groups covered, the basis for determining contributions, and the nature and effects of significant matters affecting comparability of information for all periods presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Defined Contribution Plan -URI http://asc.fasb.org/extlink&oid=49180617 + Details
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