Description Of Business And Summary Of Significant Accounting Policies	12 Months Ended
Dec. 31, 2018
Description Of Business And Summary Of Significant Accounting Policies [Abstract]
Description Of Business And Summary Of Significant Accounting Policies	(1) Description of Business and Summary of Significant Accounting Policies: (a) Description of Business: Frontier Communications Corporation (Frontier) is the fourth largest Incumbent Local Exchange Carrier (ILEC) in the United States, with approximately 4.5 million customers, 3.7 million broadband subscribers and 21,200 employees, operating in 29 states. Frontier was incorporated in 1935, originally under the name of Citizens Utilities Company and was known as Citizens Communications Company until July 31, 2008. Frontier and its subsidiaries are referred to as “we,” “us,” “our,” “Frontier,” or the “Company” in this report. Effective April 1, 2016, Frontier’s scope of operations and balance sheet changed materially as a result of the completion of the CTF Acquisition, as described in Note 4 - Acquisitions. Historical financial data presented for Frontier is not indicative of the future financial position or operating results for Frontier, and includes the results of the CTF Operations, as defined in Note 4 – Acquisitions, from the date of acquisition on April 1, 2016. (b) Basis of Presentation and Use of Estimates: Our consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). Certain reclassifications of amounts previously reported have been made to conform to the current presentation. All significant intercompany balances and transactions have been eliminated in consolidation. For our financial statements as of and for the period ended December 31, 2018, we evaluated subsequent events and transactions for potential recognition or disclosure through the date that we filed this Form 10-K with the Securities and Exchange Commission (SEC). The preparation of our financial statements in conformity with GAAP requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities at the date of the financial statements, (ii) the disclosure of contingent assets and liabilities, and (iii) the reported amounts of revenue and expenses during the reporting period. Actual results may differ from those estimates. Estimates and judgments are used when accounting for the allowance for doubtful accounts, asset impairments, indefinite-lived intangibles, depreciation and amortization, income taxes, business combinations, and pension and other postretirement benefits, among others. On July 10, 2017, we effected a one for fifteen reverse stock split of our common stock. The reverse stock split reduced the number of common shares issued (which includes outstanding shares and treasury shares) from approximately 1,193,000,000 shares to 80,000,000 shares, and reduced shares outstanding from 1,178,000,000 shares to 79,000,000 shares. In addition, and at the same time, the total number of shares of common stock that Frontier is authorized to issue changed from 1,750,000,000 shares to 175,000,000 shares. There was no change in the par value of the common stock, and no fractional shares were issued. All share and per share amounts in the financial statements and footnotes have been retroactively adjusted for all periods presented to give effect to the reverse stock split. As a result of our reverse stock split the conversion rates of our Series A Preferred Stock were proportionately adjusted. (c) Cash Equivalents: We consider all highly liquid investments with an original maturity of three months or less to be cash equivalents. Restricted cash of $50 million is included within “Other assets” on our consolidated balance sheet as of December 31, 2018 and $14 million is included within “Income taxes and other current assets” on our consolidated balance sheet as of December 31, 2017. These amounts represent funds held as collateral by certain insurance carriers. (d) Revenue Recognition: Revenue for Voice services, Data & Internet services, Video services, Switched and nonswitched access services will be recognized as the service is provided. Services that are billed in advance include monthly recurring network access services (including data services), special access services, and monthly recurring voice, video, and related charges. The unearned portion of these fees is initially deferred as a component of “Advanced billings” on our consolidated balance sheet and recognized as revenue over the period that the services are provided. Services that are billed in arrears include non-recurring network access services (including data services), switched access services, and non-recurring voice and video services. The earned but unbilled portion of these fees is recognized as revenue in our consolidated statements of operations and accrued in “Accounts receivable” on our consolidated balance sheet in the period that services are provided. Excise taxes are recognized as a liability when billed. Frontier collects various taxes from its customers and subsequently remits these taxes to governmental authorities. Substantially all of these taxes are recorded through the consolidated balance sheet and presented on a net basis in our consolidated statements of operations. We also collect Universal Service Fund (USF) surcharges from customers (primarily federal USF), of $213 million, $216 million, and $217 million for the years ended December 31, 2018, 2017, and 2016, respectively, and video franchise fees of $47 million, $52 million, and $37 million for the years ended December 31, 2018, 2017, and 2016, respectively, that we have recorded on a gross basis in our consolidated statements of operations and included within “Revenue” and “Network related expenses. In 2015, we accepted the FCC’s Connect America Fund (CAF) Phase II offer of support, which is a successor to and augments the USF frozen high cost support that we had been receiving pursuant to a 2011 FCC order. Upon completion of the 2016 acquisition of properties in California, Texas, and Florida with Verizon (CTF Acquisition), Frontier assumed the CAF Phase II support and related obligations that Verizon had previously accepted with regard to California and Texas. We are recognizing these subsidies into revenue on a straight-line basis. For additional information about our revenue policies and other required disclosures in accordance with ASC 606, refer to Note 3. (e) Property, Plant and Equipment: Property, plant and equipment are stated at original cost, including capitalized interest, or fair market value as of the date of acquisition for acquired properties. Maintenance and repairs are charged to operating expenses as incurred. The gross book value of routine property, plant and equipment retirements is charged against accumulated depreciation. (f) Goodwill and Other Intangibles: Goodwill represents the excess of purchase price over the fair value of identifiable tangible and intangible net assets acquired. We undertake studies to determine the fair values of assets and liabilities acquired and allocate purchase prices to assets and liabilities, including property, plant and equipment, goodwill and other identifiable intangibles. We examine the carrying value of our goodwill and trade name annually as of December 31, or more frequently, as circumstances warrant, to determine whether there are any impairment losses. We test for goodwill impairment at the “operating segment” level, as that term is defined in GAAP. We determined that we have one operating segment based on a number of factors that our management uses to evaluate and run our business operations, including similarities of customers, products and technology. We tested goodwill for impairment as of December 31, 2018 as a result of the continued decline in share price of our common stock since September 30, 2018, the date of our last goodwill impairment test. Refer to Note 7 for a discussion of our goodwill impairment testing and results as of December 31, 2018. We adopted ASU No. 2017-04, “Simplifying the Test for Goodwill Impairment” during 2017 in conjunction with our goodwill impairment assessment. Frontier amortizes finite-lived intangible assets over their estimated useful lives on the accelerated method of sum of the years digits. We review such intangible assets at least annually as of December 31 to assess whether any potential impairment exists and whether factors exist that would necessitate a change in useful life and a different amortization period. (g) Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of: We review long-lived assets to be held and used, including customer lists, and long-lived assets to be disposed of for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability of assets to be held and used is measured by comparing the carrying amount of the asset to the future undiscounted net cash flows expected to be generated by the asset. Recoverability of assets held for sale is measured by comparing the carrying amount of the assets to their estimated fair market value. If any assets are considered to be impaired, the impairment is measured by the amount by which the carrying amount of the assets exceeds the estimated fair value. Also, we periodically reassess the useful lives of our tangible and intangible assets to determine whether any changes are required. (h) Income Taxes and Deferred Income Taxes: We file a consolidated federal income tax return. We utilize the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred income taxes are recorded for the tax effect of temporary differences between the financial statement basis and the tax basis of assets and liabilities using tax rates expected to be in effect when the temporary differences are expected to reverse. We recognize deferred tax assets to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we are not able to realize a portion of our net deferred tax assets in the future, we would make an adjustment to the deferred tax asset valuation allowance, which would increase the provision for income taxes. (i) Stock Plans: We have various stock-based compensation plans. Awards under these plans are granted to eligible employees and directors. Awards may be made in the form of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units or other stock-based awards, including awards with performance, market and time-vesting conditions. Our general policy is to issue shares from treasury upon the grant of restricted shares, earning of performance shares and the exercise of options. The compensation cost recognized is based on awards ultimately expected to vest. GAAP requires forfeitures to be estimated and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. (j) Net Loss Per Share Attributable to Frontier Common Shareholders: Basic net loss per common share is computed using the weighted average number of common shares outstanding during the period being reported on, excluding unvested restricted stock awards. The impact of dividends paid on unvested restricted stock awards have been deducted in the determination of basic and diluted net income (loss) per share attributable to Frontier common shareholders. Except when the effect would be antidilutive, diluted net income per common share reflects the dilutive effect of certain common stock equivalents, as described further in Note 14 – Net Loss Per Common Share.

(1) Description of Business and Summary of Significant Accounting Policies:

(a) Description of Business:

Frontier Communications Corporation (Frontier) is the fourth largest Incumbent Local Exchange Carrier (ILEC) in the United States, with approximately 4.5 million customers, 3.7 million broadband subscribers and 21,200 employees, operating in 29 states. Frontier was incorporated in 1935, originally under the name of Citizens Utilities Company and was known as Citizens Communications Company until July 31, 2008. Frontier and its subsidiaries are referred to as “we,” “us,” “our,” “Frontier,” or the “Company” in this report.

Effective April 1, 2016, Frontier’s scope of operations and balance sheet changed materially as a result of the completion of the CTF Acquisition, as described in Note 4 - Acquisitions. Historical financial data presented for Frontier is not indicative of the future financial position or operating results for Frontier, and includes the results of the CTF Operations, as defined in Note 4 – Acquisitions, from the date of acquisition on April 1, 2016.

(b) Basis of Presentation and Use of Estimates:

Our consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). Certain reclassifications of amounts previously reported have been made to conform to the current presentation. All significant intercompany balances and transactions have been eliminated in consolidation.

For our financial statements as of and for the period ended December 31, 2018, we evaluated subsequent events and transactions for potential recognition or disclosure through the date that we filed this Form 10-K with the Securities and Exchange Commission (SEC).

The preparation of our financial statements in conformity with GAAP requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities at the date of the financial statements, (ii) the disclosure of contingent assets and liabilities, and (iii) the reported amounts of revenue and expenses during the reporting period. Actual results may differ from those estimates. Estimates and judgments are used when accounting for the allowance for doubtful accounts, asset impairments, indefinite-lived intangibles, depreciation and amortization, income taxes, business combinations, and pension and other postretirement benefits, among others.

On July 10, 2017, we effected a one for fifteen reverse stock split of our common stock. The reverse stock split reduced the number of common shares issued (which includes outstanding shares and treasury shares) from approximately 1,193,000,000 shares to 80,000,000 shares, and reduced shares outstanding from 1,178,000,000 shares to 79,000,000 shares. In addition, and at the same time, the total number of shares of common stock that Frontier is authorized to issue changed from 1,750,000,000 shares to 175,000,000 shares. There was no change in the par value of the common stock, and no fractional shares were issued. All share and per share amounts in the financial statements and footnotes have been retroactively adjusted for all periods presented to give effect to the reverse stock split. As a result of our reverse stock split the conversion rates of our Series A Preferred Stock were proportionately adjusted.

We consider all highly liquid investments with an original maturity of three months or less to be cash equivalents. Restricted cash of $50 million is included within “Other assets” on our consolidated balance sheet as of December 31, 2018 and $14 million is included within “Income taxes and other current assets” on our consolidated balance sheet as of December 31, 2017. These amounts represent funds held as collateral by certain insurance carriers.

(d) Revenue Recognition:

Revenue for Voice services, Data & Internet services, Video services, Switched and nonswitched access services will be recognized as the service is provided. Services that are billed in advance include monthly recurring network access services (including data services), special access services, and monthly recurring voice, video, and related charges. The unearned portion of these fees is initially deferred as a component of “Advanced billings” on our consolidated balance sheet and recognized as revenue over the period that the services are provided. Services that are billed in arrears include non-recurring network access services (including data services), switched access services, and non-recurring voice and video services. The earned but unbilled portion of these fees is recognized as revenue in our consolidated statements of operations and accrued in “Accounts receivable” on our consolidated balance sheet in the period that services are provided. Excise taxes are recognized as a liability when billed.

Frontier collects various taxes from its customers and subsequently remits these taxes to governmental authorities. Substantially all of these taxes are recorded through the consolidated balance sheet and presented on a net basis in our consolidated statements of operations. We also collect Universal Service Fund (USF) surcharges from customers (primarily federal USF), of $213 million, $216 million, and $217 million for the years ended December 31, 2018, 2017, and 2016, respectively, and video franchise fees of $47 million, $52 million, and $37 million for the years ended December 31, 2018, 2017, and 2016, respectively, that we have recorded on a gross basis in our consolidated statements of operations and included within “Revenue” and “Network related expenses.

In 2015, we accepted the FCC’s Connect America Fund (CAF) Phase II offer of support, which is a successor to and augments the USF frozen high cost support that we had been receiving pursuant to a 2011 FCC order. Upon completion of the 2016 acquisition of properties in California, Texas, and Florida with Verizon (CTF Acquisition), Frontier assumed the CAF Phase II support and related obligations that Verizon had previously accepted with regard to California and Texas. We are recognizing these subsidies into revenue on a straight-line basis.

For additional information about our revenue policies and other required disclosures in accordance with ASC 606, refer to Note 3.

(e) Property, Plant and Equipment:

Property, plant and equipment are stated at original cost, including capitalized interest, or fair market value as of the date of acquisition for acquired properties. Maintenance and repairs are charged to operating expenses as incurred. The gross book value of routine property, plant and equipment retirements is charged against accumulated depreciation.

(f) Goodwill and Other Intangibles:

Goodwill represents the excess of purchase price over the fair value of identifiable tangible and intangible net assets acquired. We undertake studies to determine the fair values of assets and liabilities acquired and allocate purchase prices to assets and liabilities, including property, plant and equipment, goodwill and other identifiable intangibles. We examine the carrying value of our goodwill and trade name annually as of December 31, or more frequently, as circumstances warrant, to determine whether there are any impairment losses. We test for goodwill impairment at the “operating segment” level, as that term is defined in GAAP.

We determined that we have one operating segment based on a number of factors that our management uses to evaluate and run our business operations, including similarities of customers, products and technology. We tested goodwill for impairment as of December 31, 2018 as a result of the continued decline in share price of our common stock since September 30, 2018, the date of our last goodwill impairment test. Refer to Note 7 for a discussion of our goodwill impairment testing and results as of December 31, 2018. We adopted ASU No. 2017-04, “Simplifying the Test for Goodwill Impairment” during 2017 in conjunction with our goodwill impairment assessment.

Frontier amortizes finite-lived intangible assets over their estimated useful lives on the accelerated method of sum of the years digits. We review such intangible assets at least annually as of December 31 to assess whether any potential impairment exists and whether factors exist that would necessitate a change in useful life and a different amortization period.

(g) Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of:

We review long-lived assets to be held and used, including customer lists, and long-lived assets to be disposed of for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability of assets to be held and used is measured by comparing the carrying amount of the asset to the future undiscounted net cash flows expected to be generated by the asset. Recoverability of assets held for sale is measured by comparing the carrying amount of the assets to their estimated fair market value. If any assets are considered to be impaired, the impairment is measured by the amount by which the carrying amount of the assets exceeds the estimated fair value. Also, we periodically reassess the useful lives of our tangible and intangible assets to determine whether any changes are required.

(h) Income Taxes and Deferred Income Taxes:

We file a consolidated federal income tax return. We utilize the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred income taxes are recorded for the tax effect of temporary differences between the financial statement basis and the tax basis of assets and liabilities using tax rates expected to be in effect when the temporary differences are expected to reverse.

We recognize deferred tax assets to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we are not able to realize a portion of our net deferred tax assets in the future, we would make an adjustment to the deferred tax asset valuation allowance, which would increase the provision for income taxes.

(i) Stock Plans:

We have various stock-based compensation plans. Awards under these plans are granted to eligible employees and directors. Awards may be made in the form of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units or other stock-based awards, including awards with performance, market and time-vesting conditions. Our general policy is to issue shares from treasury upon the grant of restricted shares, earning of performance shares and the exercise of options.

The compensation cost recognized is based on awards ultimately expected to vest. GAAP requires forfeitures to be estimated and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.

(j) Net Loss Per Share Attributable to Frontier Common Shareholders:

Basic net loss per common share is computed using the weighted average number of common shares outstanding during the period being reported on, excluding unvested restricted stock awards. The impact of dividends paid on unvested restricted stock awards have been deducted in the determination of basic and diluted net income (loss) per share attributable to Frontier common shareholders. Except when the effect would be antidilutive, diluted net income per common share reflects the dilutive effect of certain common stock equivalents, as described further in Note 14 – Net Loss Per Common Share.