Pension And Postretirement Benefits | Period [Axis] |
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2016-01-01 - 2016-12-31 |
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Pension And Postretirement Benefits | |
Schedule Of Plan Obligations In Excess Of Plan Assets [Table Text Block] | | Pension Benefits | | Postretirement Benefits | | 2016 | | 2015 | | 2016 | | 2015 | Benefit obligation at beginning of year | $ | 55,464 | | $ | 59,543 | | $ | 27,898 | | $ | 30,709 | Service cost - benefits earned during the period | | 1,112 | | | 1,212 | | | 192 | | | 222 | Interest cost on projected benefit obligation | | 1,980 | | | 1,902 | | | 972 | | | 967 | Amendments | | (206) | | | (8) | | | (600) | | | (74) | Actuarial (gain) loss | | 1,485 | | | (3,079) | | | (529) | | | (1,988) | Special termination benefits | | - | | | 149 | | | - | | | - | Benefits paid | | (3,614) | | | (4,681) | | | (1,941) | | | (1,958) | DIRECTV acquisition | | - | | | 470 | | | - | | | 20 | Transfer for sale of Connecticut wireline operations | | - | | | (42) | | | - | | | - | Plan transfers | | (38) | | | (2) | | | 35 | | | - | Benefit obligation at end of year | $ | 56,183 | | $ | 55,464 | | $ | 26,027 | | $ | 27,898 |
| | Pension Benefits | | Postretirement Benefits | | | 2016 | | 2015 | | 2016 | | 2015 | Fair value of plan assets at beginning of year | $ | 42,195 | | $ | 45,163 | | $ | 6,671 | | $ | 7,846 | Actual return on plan assets | | 3,123 | | | 604 | | | 407 | | | 64 | Benefits paid1 | | (3,614) | | | (4,681) | | | (1,156) | | | (1,239) | Contributions | | 910 | | | 735 | | | - | | | - | DIRECTV acquisition | | - | | | 418 | | | - | | | - | Transfer for sale of Connecticut wireline operations | | - | | | (42) | | | - | | | - | Plan transfers and other | | (4) | | | (2) | | | (1) | | | - | Fair value of plan assets at end of year3 | | 42,610 | | | 42,195 | | | 5,921 | | | 6,671 | Unfunded status at end of year2 | $ | (13,573) | | $ | (13,269) | | $ | (20,106) | | $ | (21,227) | 1 | At our discretion, certain postretirement benefits may be paid from AT&T cash accounts, which does not reduce | | Voluntary Employee Benefit Association (VEBA) assets. Future benefit payments may be made from VEBA trusts and thus reduce | | those asset balances. | 2 | Funded status is not indicative of our ability to pay ongoing pension benefits or of our obligation to fund retirement trusts. | | Required pension funding is determined in accordance with the Employee Retirement Income Security Act of 1974, as amended | | (ERISA) regulations. | | | | | | | | | | | | 3 | Net assets available for benefits were $51,087 at December 31, 2016 and $50,909 at December 31, 2015 and include the preferred equity | | interest in AT&T Mobility II LLC discussed below, which was valued at $8,477 and $8,714, respectively. |
| | Pension Benefits | | Postretirement Benefits | | | 2016 | | 2015 | | 2016 | | 2015 | Current portion of employee benefit obligation1 | $ | - | | $ | - | | $ | (1,644) | | $ | (1,766) | Employee benefit obligation2 | | (13,573) | | | (13,269) | | | (18,462) | | | (19,461) | Net amount recognized | $ | (13,573) | | $ | (13,269) | | $ | (20,106) | | $ | (21,227) | 1 | Included in "Accounts payable and accrued liabilities." | | | | | | | | | | | | 2 | Included in "Postemployment benefit obligation." | | | | | | | | | | | |
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Schedule Of Defined Benefit Plan And Postretirement Benefits Disclosure [Table Text Block] | | 2016 | | 2015 | Plan assets recognized in the consolidated financial statements | $ | 42,610 | | $ | 42,195 | Preferred equity interest in Mobility | | 8,477 | | | 8,714 | Net assets available for benefits | $ | 51,087 | | $ | 50,909 |
| | Pension Benefits | | Postretirement Benefits | | | 2016 | | 2015 | | 2014 | | 2016 | | 2015 | | 2014 | Service cost – benefits earned during the period | $ | 1,112 | | $ | 1,212 | | $ | 1,134 | | $ | 192 | | $ | 222 | | $ | 233 | Interest cost on projected benefit obligation | | 1,980 | | | 1,902 | | | 2,470 | | | 972 | | | 967 | | | 1,458 | Expected return on assets | | (3,115) | | | (3,317) | | | (3,380) | | | (355) | | | (421) | | | (653) | Amortization of prior service credit | | (103) | | | (103) | | | (94) | | | (1,277) | | | (1,278) | | | (1,448) | Actuarial (gain) loss | | 1,478 | | | (373) | | | 5,419 | | | (581) | | | (1,632) | | | 2,093 | Net pension and postretirement cost (credit) | $ | 1,352 | | $ | (679) | | $ | 5,549 | | $ | (1,049) | | $ | (2,142) | | $ | 1,683 | | |
| Pension Benefits | | Postretirement Benefits | | | 2016 | | | 2015 | | | 2014 | | | 2016 | | | 2015 | | | 2014 | Balance at beginning of year | $ | 512 | | $ | 575 | | $ | 583 | | $ | 5,510 | | $ | 6,257 | | $ | 6,812 | Prior service (cost) credit | | 128 | | | 1 | | | 45 | | | 372 | | | 45 | | | 383 | Amortization of prior service credit | | (65) | | | (64) | | | (58) | | | (793) | | | (792) | | | (898) | Reclassification to income of prior service credit | | - | | | - | | | 5 | | | - | | | - | | | (40) | Total recognized in other comprehensive (income) loss | | 63 | | | (63) | | | (8) | | | (421) | | | (747) | | | (555) | Balance at end of year | $ | 575 | | $ | 512 | | $ | 575 | | $ | 5,089 | | $ | 5,510 | | $ | 6,257 |
Net Periodic Benefit Cost | 2016 | | 2015 | | 2014 | Service cost – benefits earned during the period | $ | 12 | | $ | 9 | | $ | 7 | Interest cost on projected benefit obligation | | 83 | | | 77 | | | 109 | Amortization of prior service cost (credit) | | (1) | | | 1 | | | (1) | Actuarial (gain) loss | | 72 | | | (36) | | | 243 | Net supplemental retirement pension cost | $ | 166 | | $ | 51 | | $ | 358 | | | | | | | | | | Other Changes Recognized in Other Comprehensive Income | 2016 | | 2015 | | 2014 | Prior service (cost) credit | $ | 1 | | $ | (1) | | $ | (11) | Amortization of prior service cost (credit) | | (1) | | | 1 | | | (1) | Total recognized in other comprehensive (income) loss (net of tax) | $ | - | | $ | - | | $ | (12) |
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Schedule Of Assumptions In Determining The Projected Benefit Obligation And Net Pension And Postretirement Benefit Cost [Table Text Block] | | | Pension Benefits | | | Postretirement Benefits | | | | 2016 | | | 2015 | | | 2014 | | | 2016 | | | 2015 | | | 2014 | | Weighted-average discount rate for determining projected benefit obligation at December 31 | 4.40 | % | | 4.60 | % | | 4.30 | % | | 4.30 | % | | 4.50 | % | | 4.20 | % | Discount rate in effect for determining service cost | 4.90 | % | | 4.60 | % | | 5.00 | % | | 5.00 | % | | 4.60 | % | | 5.00 | % | Discount rate in effect for determining interest cost1 | 3.70 | % | | 3.30 | % | | 4.60 | % | | 3.60 | % | | 3.30 | % | | 5.00 | % | Long-term rate of return on plan assets | 7.75 | % | | 7.75 | % | | 7.75 | % | | 5.75 | % | | 5.75 | % | | 7.75 | % | Composite rate of compensation increase for determining projected benefit obligation | 3.00 | % | | 3.10 | % | | 3.00 | % | | 3.00 | % | | 3.10 | % | | 3.00 | % | Composite rate of compensation increase for determining net pension cost (benefit) | 3.10 | % | | 3.00 | % | | 3.00 | % | | 3.10 | % | | 3.00 | % | | 3.00 | % | 1 | Weighted-average discount rate of 5.00% in effect for pension costs from January 1, 2014 through September 30, 2014. | | | | | Discount rates in effect of 4.90% for service cost and 3.50% for interest cost from October 1, 2014 through December | | | | | 31, 2014. A discount rate of 5.00% was used for postretirement costs for the year ended December 31, 2014. | | | |
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The Effect Of A One Percentage-Point Change In The Assumed Combined Medical And Dental Cost Trend Rate [Table Text Block] | | | | One Percentage- | | | One Percentage- | | | | Point Increase | | | Point Decrease | Increase (decrease) in total of service and interest cost components | | $ | 50 | | $ | (44) | Increase (decrease) in accumulated postretirement benefit obligation | | | 511 | | | (458) |
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Schedule Of Defined Benefit Plan Targeted And Actual Plan Asset Allocations [Table Text Block] | | Pension Assets | | Postretirement (VEBA) Assets | | Target | | 2016 | | | 2015 | | | Target | | 2016 | | | 2015 | | Equity securities: | | | | | | | | | | | | | | | | | | | | | | | | Domestic | 20 | % | - | 30 | % | | 24 | % | | 22 | % | | 17 | % | - | 27 | % | | 22 | % | | 26 | % | International | 10 | % | - | 20 | % | | 15 | | | 15 | | | 14 | % | - | 24 | % | | 19 | | | 14 | | Fixed income securities | 35 | % | - | 45 | % | | 39 | | | 40 | | | 33 | % | - | 43 | % | | 38 | | | 34 | | Real assets | 6 | % | - | 16 | % | | 11 | | | 10 | | | 0 | % | - | 6 | % | | 1 | | | 1 | | Private equity | 4 | % | - | 14 | % | | 11 | | | 12 | | | 0 | % | - | 7 | % | | 2 | | | 2 | | Other | 0 | % | - | 5 | % | | - | | | 1 | | | 13 | % | - | 23 | % | | 18 | | | 23 | | Total | | | | | | | 100 | % | | 100 | % | | | | | | | | 100 | % | | 100 | % |
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Schedule Of Fair Value Of Pension And Postretirement Assets And Liabilities By Level [Table Text Block] | Pension Assets and Liabilities at Fair Value as of December 31, 2016 | | Level 1 | | Level 2 | | Level 3 | | Total | Non-interest bearing cash | $ | 94 | | $ | - | | $ | - | | $ | 94 | Interest bearing cash | | - | | | 77 | | | - | | | 77 | Foreign currency contracts | | - | | | 7 | | | - | | | 7 | Equity securities: | | | | | | | | | | | | Domestic equities | | 8,299 | | | - | | | - | | | 8,299 | International equities | | 4,389 | | | - | | | 5 | | | 4,394 | Fixed income securities: | | | | | | | | | | | | Asset-backed securities | | - | | | 399 | | | - | | | 399 | Mortgage-backed securities | | - | | | 838 | | | - | | | 838 | Collateralized mortgage-backed securities | | - | | | 208 | | | - | | | 208 | Collateralized mortgage obligations/REMICS | | - | | | 269 | | | - | | | 269 | Corporate and other fixed income instruments and funds | | 75 | | | 8,442 | | | 40 | | | 8,557 | Government and municipal bonds | | 80 | | | 4,889 | | | - | | | 4,969 | Real estate and real assets | | - | | | - | | | 2,273 | | | 2,273 | Securities lending collateral | | 207 | | | 1,977 | | | - | | | 2,184 | Receivable for variation margin | | 8 | | | - | | | - | | | 8 | Purchased options | | - | | | 1 | | | - | | | 1 | Assets at fair value | | 13,152 | | | 17,107 | | | 2,318 | | | 32,577 | Investments sold short and other liabilities at fair value | | (643) | | | (7) | | | (4) | | | (654) | Total plan net assets at fair value | $ | 12,509 | | $ | 17,100 | | $ | 2,314 | | $ | 31,923 | Assets held at net asset value practical expedient | | | | | | | | | | | | Private equity funds | | | | | | | | | | | 4,648 | Real estate funds | | | | | | | | | | | 2,392 | Commingled funds | | | | | | | | | | | 5,721 | Total assets held at net asset value practical expedient | | | | | | | | | | | 12,761 | Other assets (liabilities)1 | | | | | | | | | | | (2,074) | Total Plan Net Assets | | | | | | | | | | $ | 42,610 | 1 | Other assets (liabilities) include amounts receivable, accounts payable and net adjustment for securities lending payable. |
Postretirement Assets and Liabilities at Fair Value as of December 31, 2016 | | Level 1 | | Level 2 | | Level 3 | | Total | Interest bearing cash | $ | 175 | | $ | 593 | | $ | - | | $ | 768 | Foreign currencies | | 6 | | | - | | | - | | | 6 | Equity securities: | | | | | | | | | | | | Domestic equities | | 1,178 | | | 7 | | | - | | | 1,185 | International equities | | 896 | | | 2 | | | - | | | 898 | Fixed income securities: | | | | | | | | | | | | Asset-backed securities | | - | | | 33 | | | 4 | | | 37 | Collateralized mortgage-backed securities | | - | | | 108 | | | 13 | | | 121 | Collateralized mortgage obligations | | - | | | 32 | | | 2 | | | 34 | Corporate and other fixed income instruments and funds | | - | | | 422 | | | 7 | | | 429 | Government and municipal bonds | | 20 | | | 659 | | | - | | | 679 | Securities lending collateral | | - | | | 128 | | | - | | | 128 | Total plan net assets at fair value | $ | 2,275 | | $ | 1,984 | | $ | 26 | | $ | 4,285 | Assets held at net asset value practical expedient | | | | | | | | | | | | Private equity funds | | | | | | | | | | | 118 | Real estate funds | | | | | | | | | | | 61 | Commingled funds | | | | | | | | | | | 1,667 | Total assets held at net asset value practical expedient | | | | | | | | | | | 1,846 | Other assets (liabilities)1 | | | | | | | | | | | (210) | Total Plan Net Assets | | | | | | | | | | $ | 5,921 | 1 | Other assets (liabilities) include amounts receivable, accounts payable and net adjustment for securities lending payable. |
Pension Assets and Liabilities at Fair Value as of December 31, 2015 | | | Level 1 | | Level 2 | | Level 3 | | Total | Non-interest bearing cash | $ | 160 | | $ | - | | $ | - | | $ | 160 | Interest bearing cash | | - | | | 25 | | | - | | | 25 | Foreign currency contracts | | - | | | 25 | | | - | | | 25 | Equity securities: | | | | | | | | | | | | Domestic equities | | 8,315 | | | 4 | | | - | | | 8,319 | International equities | | 4,287 | | | - | | | - | | | 4,287 | Fixed income securities: | | | | | | | | | | | | Asset-backed securities | | - | | | 403 | | | 1 | | | 404 | Mortgage-backed securities | | - | | | 792 | | | - | | | 792 | Collateralized mortgage-backed securities | | - | | | 278 | | | - | | | 278 | Collateralized mortgage obligations/REMICS | | - | | | 345 | | | - | | | 345 | Corporate and other fixed income instruments and funds | | 65 | | | 8,274 | | | 43 | | | 8,382 | Government and municipal bonds | | 75 | | | 4,495 | | | - | | | 4,570 | Real estate and real assets | | - | | | - | | | 2,062 | | | 2,062 | Securities lending collateral | | 512 | | | 3,538 | | | - | | | 4,050 | Receivable for variation margin | | 13 | | | - | | | - | | | 13 | Assets at fair value | | 13,427 | | | 18,179 | | | 2,106 | | | 33,712 | Investments sold short and other liabilities at fair value | | (824) | | | (12) | | | - | | | (836) | Total plan net assets at fair value | $ | 12,603 | | $ | 18,167 | | $ | 2,106 | | $ | 32,876 | Assets held at net asset value practical expedient | | | | | | | | | | | | Private equity funds | | | | | | | | | | | 4,926 | Real estate funds | | | | | | | | | | | 2,295 | Commingled funds | | | | | | | | | | | 5,854 | Total assets held at net asset value practical expedient | | | | | | | | | | | 13,075 | Other assets (liabilities)1 | | | | | | | | | | | (3,756) | Total Plan Net Assets | | | | | | | | | | $ | 42,195 | 1 | Other assets (liabilities) include amounts receivable, accounts payable and net adjustment for securities lending payable. |
Postretirement Assets and Liabilities at Fair Value as of December 31, 2015 | | Level 1 | | Level 2 | | Level 3 | | Total | Interest bearing cash | $ | 220 | | $ | 1,292 | | $ | - | | $ | 1,512 | Foreign currencies | | 4 | | | - | | | - | | | 4 | Equity securities: | | | | | | | | | | | | Domestic equities | | 1,187 | | | 9 | | | - | | | 1,196 | International equities | | 869 | | | 2 | | | - | | | 871 | Fixed income securities: | | | | | | | | | | | | Asset-backed securities | | - | | | 35 | | | 2 | | | 37 | Collateralized mortgage-backed securities | | - | | | 120 | | | 13 | | | 133 | Collateralized mortgage obligations | | - | | | 45 | | | - | | | 45 | Corporate and other fixed income instruments and funds | | - | | | 378 | | | - | | | 378 | Government and municipal bonds | | - | | | 617 | | | - | | | 617 | Securities lending collateral | | 6 | | | 189 | | | - | | | 195 | Futures Contracts | | 1 | | | - | | | - | | | 1 | Total plan net assets at fair value | $ | 2,287 | | $ | 2,687 | | $ | 15 | | $ | 4,989 | Assets held at net asset value practical expedient | | | | | | | | | | | | Private equity funds | | | | | | | | | | | 155 | Real estate funds | | | | | | | | | | | 81 | Commingled funds | | | | | | | | | | | 1,682 | Total assets held at net asset value practical expedient | | | | | | | | | | | 1,918 | Other assets (liabilities)1 | | | | | | | | | | | (236) | Total Plan Net Assets | | | | | | | | | | $ | 6,671 | 1 | Other assets (liabilities) include amounts receivable, accounts payable and net adjustment for securities lending payable. |
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Summary of Changes In The Fair Value Of The Level 3 Pension And Postretirement Assets [Table Text Block] | Pension Assets | Equities | | Fixed Income Funds | | Real Estate and Real Assets | | Total | Balance at beginning of year | $ | - | | $ | 44 | | $ | 2,062 | | $ | 2,106 | Realized gains (losses) | | - | | | (17) | | | (103) | | | (120) | Unrealized gains (losses) | | 3 | | | 19 | | | 377 | | | 399 | Transfers in | | (4) | | | - | | | 77 | | | 73 | Transfers out | | - | | | (2) | | | - | | | (2) | Purchases | | 3 | | | - | | | 65 | | | 68 | Sales | | (1) | | | (4) | | | (205) | | | (210) | Balance at end of year | $ | 1 | | $ | 40 | | $ | 2,273 | | $ | 2,314 |
Postretirement Assets | | | | | | Fixed Income Funds | | Total | Balance at beginning of year | | | | | | | $ | 15 | | $ | 15 | Realized gains (losses) | | | | | | | | (2) | | | (2) | Unrealized gains (losses) | | | | | | | | 2 | | | 2 | Transfers in | | | | | | | | 16 | | | 16 | Sales | | | | | | | | (5) | | | (5) | Balance at end of year | | | | | | | $ | 26 | | $ | 26 |
Pension Assets | Equities | | Fixed Income Funds | | Real Estate and Real Assets | | Total | Balance at beginning of year | $ | - | | $ | 51 | | $ | 2,140 | | $ | 2,191 | Realized gains (losses) | | (1) | | | (19) | | | 247 | | | 227 | Unrealized gains (losses) | | 1 | | | 16 | | | 192 | | | 209 | Purchases | | - | | | 1 | | | 195 | | | 196 | Sales | | - | | | (5) | | | (712) | | | (717) | Balance at end of year | $ | - | | $ | 44 | | $ | 2,062 | | $ | 2,106 |
Postretirement Assets | | | | | Fixed Income Funds | | Total | Balance at beginning of year | | | | | | | $ | 2 | | $ | 2 | Transfers in | | | | | | | | 15 | | | 15 | Transfers out | | | | | | | | (1) | | | (1) | Sales | | | | | | | | (1) | | | (1) | Balance at end of year | | | | | | | $ | 15 | | $ | 15 |
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Estimated Future Benefit Payments [Table Text Block] | | Pension Benefits | | Postretirement Benefits | | 2017 | $ | 4,938 | | $ | 1,809 | | 2018 | | 4,437 | | | 1,797 | | 2019 | | 4,312 | | | 1,788 | | 2020 | | 4,264 | | | 1,783 | | 2021 | | 4,200 | | | 1,776 | | Years 2022 - 2026 | | 19,764 | | | 8,225 | |
| 2016 | | 2015 | Projected benefit obligation | $ | (2,378) | | $ | (2,444) | Accumulated benefit obligation | | (2,314) | | | (2,372) | Fair value of plan assets | | - | | | - |
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