Business and Basis of Presentation	3 Months Ended
Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation The interim condensed consolidated financial statements of Dex One Corporation and its direct and indirect wholly-owned subsidiaries (“Dex One,” the “Company,” “we,” “us” and “our”) have been prepared in accordance with the Securities and Exchange Commission’s (“SEC”) instructions to this Quarterly Report on Form 10-Q and should be read in conjunction with the financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2012. The interim condensed consolidated financial statements include the accounts of Dex One and its direct and indirect wholly-owned subsidiaries. As of March 31, 2013, R.H. Donnelley Corporation ("RHD"), R.H. Donnelley Inc. (“RHDI” or "RHDI Inc."), Dex Media, Inc., Dex One Digital, Inc. ("Dex One Digital"), Dex One Service, Inc. (“Dex One Service”) and Newdex, Inc. ("Newdex") were our only direct wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated. The results of interim periods are not necessarily indicative of results for the full year or any subsequent period. In the opinion of management, all material adjustments (consisting of normal recurring adjustments) considered necessary for a fair statement of financial position, results of operations and cash flows at the dates and for the periods presented have been included. Business Overview We are a marketing solutions company that helps local businesses and consumers connect. Our proprietary and affiliate provided marketing solutions combine multiple media platforms, which drive large volumes of consumer leads to our customers and assist our customers with managing their messaging to those consumers. Our marketing consultants strive to be trusted advisors and offer local businesses personalized marketing consulting services and exposure across leading media platforms used by consumers searching for local businesses. These platforms include online and mobile local search solutions, major search engines, and print directories. Our proprietary marketing solutions include our Dex published yellow pages directories, which we co-brand with other recognizable brands in the industry such as CenturyLink and YP (formerly AT&T), our Internet yellow pages site, DexKnows.com and our mobile application, Dex Mobile. Our growing list of marketing solutions also includes local business and market analysis, message and image creation, target market identification, advertising and digital profile creation, web sites, mobile web sites, reputation management, network display ads, online video development and promotion, keyword optimization strategies and programs, distribution strategies, social media marketing and tracking and reporting. Our digital lead generation solutions are powered by our search engine marketing product, DexNet, which extends our customers’ reach to our leading Internet and mobile partners to attract consumers searching for local businesses, products and services within our markets. Agreement and Plan of Merger On August 20, 2012, Dex One entered into an Agreement and Plan of Merger (the “Merger Agreement”) with SuperMedia Inc., (“SuperMedia”), Newdex, and Spruce Acquisition Sub, Inc., a direct wholly owned subsidiary of Newdex (“Merger Sub”) (collectively, the "Merger Entities"). The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, (i) Dex One will merge with and into Newdex, with Newdex as the surviving entity (the “Dex Merger”) and (ii) immediately following consummation of the Dex Merger, Merger Sub will merge with and into SuperMedia, with SuperMedia as the surviving entity and becoming a direct wholly owned subsidiary of Newdex (the “SuperMedia Merger” and together with the Dex Merger, the “Mergers”). As a result of the Mergers, Newdex, as successor to Dex One, will be renamed Dex Media, Inc. (“Dex Media”) and become a newly listed company. On December 5, 2012, the Merger Entities entered into an Amended and Restated Agreement and Plan of Merger (the “Amended and Restated Merger Agreement”), which upholds the basic economic terms and strategic merits of the Mergers included in the original Merger Agreement, and, among other things, (i) extends the date on which a party may first unilaterally terminate the Amended and Restated Merger Agreement and the Mergers from December 31, 2012 to June 30, 2013 and (ii) provides that if either Dex One or SuperMedia is unable to obtain the requisite consents to the Mergers from its stockholders and to the contemplated amendments to its respective financing agreements from its senior secured lenders to consummate the transactions on an out-of-court basis, the Mergers may be effected through voluntary pre-packaged plans under Chapter 11 of Title 11 of the United States Code ("Chapter 11" or the "Bankruptcy Code"). Because we were unable to obtain the requisite consents to the contemplated amendments to our financing agreements from our senior secured lenders to effectuate the Mergers out of court, the Company voluntarily filed a pre-packaged bankruptcy under Chapter 11 on March 18, 2013. See "Filing of Voluntary Petitions in Chapter 11" below. See our Annual Report on Form 10-K for the year ended December 31, 2012 filed with the SEC on March 18, 2013 and Current Report on Form 8-K filed with the SEC on December 6, 2012 for additional information on the terms and conditions of the Amended and Restated Merger Agreement. Upon completion, the Mergers will be accounted for as a business combination using the acquisition method of accounting in accordance with Accounting Standards Codification ("ASC") 805, Business Combinations, with Dex One identified as the accounting acquirer. Dex One is considered the acquiring entity for accounting purposes based on certain criteria including, but not limited to, the following: (1) upon consummation of the merger, Dex One stockholders will hold approximately 60% of the common stock of Dex Media as compared to 40% held by SuperMedia stockholders and (2) Dex One's current chairman of the board of directors will continue to serve as the chairman of the board of directors of Dex Media. Filing of Voluntary Petitions in Chapter 11 On March 18, 2013 (the "Petition Date"), Dex One and certain of its subsidiaries (collectively, the “Debtors”) filed voluntary petitions in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) seeking Chapter 11 relief under the provisions of the Bankruptcy Code. The Chapter 11 cases are being jointly administered under the caption In re Dex One Corporation, et al., Case No. 13-10533 (the “Chapter 11 Cases”). The Debtors will continue to operate their businesses and manage their properties as debtors in possession under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code. Access to court documents and other general information about the Chapter 11 Cases, including our proposed plan of reorganization and disclosure statement describing the terms of the plan of reorganization, can be found at www.epiq11.com/dexone. The Bankruptcy Court hearing to consider the approval of our plan of reorganization is currently scheduled for April 29, 2013. The filing of the Chapter 11 Cases triggered an event of default that rendered the remaining financial obligations under the Company's $300.0 million Initial Aggregate Principal Amount of 12%/14% Senior Subordinated Notes due 2017 (“Dex One Senior Subordinated Notes”) and senior secured credit facilities automatically and immediately due and payable. However, any efforts to enforce the financial obligations under the Dex One Senior Subordinated Notes and senior secured credit facilities are stayed as a result of the filing of the Chapter 11 Cases in the Bankruptcy Court and during pendency of the Chapter 11 Cases unless the Bankruptcy Court approves a motion to enforce such provisions. Going Concern The Company's financial statements are prepared using accounting principles generally accepted in the United States applicable to a going concern, which contemplates the realization of assets and liquidation of liabilities in the normal course of business. The accompanying historical condensed consolidated financial statements do not include any adjustments that might be necessary if the Company is unable to continue as a going concern. The assessment of our ability to continue as a going concern was made by management considering, among other factors: (1) the Company's voluntary Chapter 11 bankruptcy filing on March 18, 2013 and the impact it has or could have on our outstanding debt, (2) the Company's highly leveraged capital structure and the current maturity date of our senior secured credit facilities of October 24, 2014, and (3) the significant negative impact on our operating results and cash flows associated with our print products primarily as a result of (i) customer attrition, (ii) declines in overall advertising spending by our customers, (iii) the significant impact of the weak local business conditions on consumer spending in our clients' markets, (iv) an increase in competition and more fragmentation in local business search and (v) the migration of customers to digital marketing solutions. As noted above, because the Company was unable to obtain the requisite consents to the contemplated amendments to our financing agreements from our senior secured lenders to effectuate the Mergers out of court, the Company voluntarily filed a pre-packaged bankruptcy under Chapter 11. The filing of the Chapter 11 Cases triggered an event of default that rendered the remaining financial obligations under our Dex One Senior Subordinated Notes and senior secured credit facilities automatically and immediately due and payable. Certain senior secured lenders who are party to the Support and Limited Waiver Agreement ("Support Agreement"), however, have agreed to a conditional waiver whereby they will not accelerate the financial obligations under our senior secured credit facilities upon the Company's Chapter 11 filing. The Support Agreement, including the conditional waiver noted above and the obligations of all parties to the Support Agreement, may terminate automatically upon the occurrence of certain circumstances or events if such circumstance or event has not been cured by the Company or waived unconditionally by the consenting lenders. Nonetheless, any efforts to enforce the acceleration provisions of our outstanding debt are automatically stayed as a result of filing the Chapter 11 Cases in the Bankruptcy Court and during pendency of the Chapter 11 Cases unless the Bankruptcy Court approves a motion to enforce such provisions. The Bankruptcy Court has not approved such a motion and we believe it is unlikely that the Bankruptcy Court would approve such a motion during pendency of the Chapter 11 Cases. However, there can be no assurance that this will not occur. In the event the Bankruptcy Court does permit modification of the stay and allows the acceleration of all of our outstanding debt, the Company would not have adequate cash on hand or other financial resources to satisfy all of its debt obligations. Under these circumstances, this raises substantial doubt as to whether the Company would be able to continue as a going concern for a reasonable period of time. Because filing for Chapter 11 was done primarily to effectuate the contemplated amendments to our financing agreements and the Mergers and we expect that no unsecured creditors of the Company will be materially impacted as a result of filing for Chapter 11 as stated in our plan of reorganization, we anticipate that filing for Chapter 11 will not significantly impact our financial position, results of operations and cash flows through the Chapter 11 proceedings. If the Bankruptcy Court's stay on the acceleration provisions of our outstanding debt remains in effect until our emergence from Chapter 11 as expected, our current financial projections indicate that management expects to be able to continue to generate cash flows from operations in amounts sufficient to fund operations and meet debt service requirements through the Chapter 11 proceedings and for at least the next 12-15 months. However, no assurances can be made that our expectations noted above regarding the results or impact of the Chapter 11 Cases will occur or that our business will generate sufficient cash flows from operations to enable us to fund the Company's cash requirements because the current information used in our financial projections could change in the future as a result of changes in estimates and assumptions as well as risks noted above and in Part I - Item 1A, "Risk Factors" of our Annual Report on Form 10-K for the year ended December 31, 2012. Management's objectives for the proposed merger and contemplated amendments to our financing agreements position the Company to operate as a going concern upon emergence from Chapter 11 and for a reasonable period of time thereafter. However, no assurances can be made that these objectives will be attained. Accounting Matters Subsequent to Filing for Chapter 11 For periods subsequent to filing for Chapter 11, ASC 852, Reorganizations ("ASC 852") has been applied in preparing the condensed consolidated financial statements. ASC 852 requires that the financial statements distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of the business. Accordingly, certain expenses including professional fees, realized gains and losses and provisions for losses that are realized from the reorganization and restructuring process will be classified as reorganization items on the condensed consolidated statement of comprehensive income (loss). Additionally, on the condensed consolidated balance sheet, liabilities are segregated between liabilities not subject to compromise and liabilities subject to compromise. Liabilities subject to compromise are reported at their pre-petition amounts or current unimpaired values, even if they may be settled for lesser amounts. See Note 3, "Reorganization Items, Net and Liabilities Subject to Compromise" for additional information. The accompanying condensed consolidated financial statements do not purport to reflect or provide for the consequences of filing for Chapter 11. In particular, the financial statements do not purport to show (i) as to assets, their realizable value on a liquidation basis or their availability to satisfy liabilities; (ii) as to pre-petition liabilities, the amounts that may be allowed for claims or contingencies, or the status and priority thereof; (iii) as to shareholders' equity accounts, the effects of any changes that may be made in the Company's capitalization; or (iv) as to operations, the effects of any changes that may be made to the Company's business.

Business and Basis of Presentation

The interim condensed consolidated financial statements of Dex One Corporation and its direct and indirect wholly-owned subsidiaries (“Dex One,” the “Company,” “we,” “us” and “our”) have been prepared in accordance with the Securities and Exchange Commission’s (“SEC”) instructions to this Quarterly Report on Form 10-Q and should be read in conjunction with the financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2012. The interim condensed consolidated financial statements include the accounts of Dex One and its direct and indirect wholly-owned subsidiaries. As of March 31, 2013, R.H. Donnelley Corporation ("RHD"), R.H. Donnelley Inc. (“RHDI” or "RHDI Inc."), Dex Media, Inc., Dex One Digital, Inc. ("Dex One Digital"), Dex One Service, Inc. (“Dex One Service”) and Newdex, Inc. ("Newdex") were our only direct wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated. The results of interim periods are not necessarily indicative of results for the full year or any subsequent period. In the opinion of management, all material adjustments (consisting of normal recurring adjustments) considered necessary for a fair statement of financial position, results of operations and cash flows at the dates and for the periods presented have been included.

Business Overview

We are a marketing solutions company that helps local businesses and consumers connect. Our proprietary and affiliate provided marketing solutions combine multiple media platforms, which drive large volumes of consumer leads to our customers and assist our customers with managing their messaging to those consumers. Our marketing consultants strive to be trusted advisors and offer local businesses personalized marketing consulting services and exposure across leading media platforms used by consumers searching for local businesses. These platforms include online and mobile local search solutions, major search engines, and print directories.

Our proprietary marketing solutions include our Dex published yellow pages directories, which we co-brand with other recognizable brands in the industry such as CenturyLink and YP (formerly AT&T), our Internet yellow pages site, DexKnows.com and our mobile application, Dex Mobile. Our growing list of marketing solutions also includes local business and market analysis, message and image creation, target market identification, advertising and digital profile creation, web sites, mobile web sites, reputation management, network display ads, online video development and promotion, keyword optimization strategies and programs, distribution strategies, social media marketing and tracking and reporting. Our digital lead generation solutions are powered by our search engine marketing product, DexNet, which extends our customers’ reach to our leading Internet and mobile partners to attract consumers searching for local businesses, products and services within our markets.

Agreement and Plan of Merger

On August 20, 2012, Dex One entered into an Agreement and Plan of Merger (the “Merger Agreement”) with SuperMedia Inc., (“SuperMedia”), Newdex, and Spruce Acquisition Sub, Inc., a direct wholly owned subsidiary of Newdex (“Merger Sub”) (collectively, the "Merger Entities"). The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, (i) Dex One will merge with and into Newdex, with Newdex as the surviving entity (the “Dex Merger”) and (ii) immediately following consummation of the Dex Merger, Merger Sub will merge with and into SuperMedia, with SuperMedia as the surviving entity and becoming a direct wholly owned subsidiary of Newdex (the “SuperMedia Merger” and together with the Dex Merger, the “Mergers”). As a result of the Mergers, Newdex, as successor to Dex One, will be renamed Dex Media, Inc. (“Dex Media”) and become a newly listed company.

On December 5, 2012, the Merger Entities entered into an Amended and Restated Agreement and Plan of Merger (the “Amended and Restated Merger Agreement”), which upholds the basic economic terms and strategic merits of the Mergers included in the original Merger Agreement, and, among other things, (i) extends the date on which a party may first unilaterally terminate the Amended and Restated Merger Agreement and the Mergers from December 31, 2012 to June 30, 2013 and (ii) provides that if either Dex One or SuperMedia is unable to obtain the requisite consents to the Mergers from its stockholders and to the contemplated amendments to its respective financing agreements from its senior secured lenders to consummate the transactions on an out-of-court basis, the Mergers may be effected through voluntary pre-packaged plans under Chapter 11 of Title 11 of the United States Code ("Chapter 11" or the "Bankruptcy Code"). Because we were unable to obtain the requisite consents to the contemplated amendments to our financing agreements from our senior secured lenders to effectuate the Mergers out of court, the Company voluntarily filed a pre-packaged bankruptcy under Chapter 11 on March 18, 2013. See "Filing of Voluntary Petitions in Chapter 11" below.

See our Annual Report on Form 10-K for the year ended December 31, 2012 filed with the SEC on March 18, 2013 and Current Report on Form 8-K filed with the SEC on December 6, 2012 for additional information on the terms and conditions of the Amended and Restated Merger Agreement.

Upon completion, the Mergers will be accounted for as a business combination using the acquisition method of accounting in accordance with Accounting Standards Codification ("ASC") 805, Business Combinations, with Dex One identified as the accounting acquirer. Dex One is considered the acquiring entity for accounting purposes based on certain criteria including, but not limited to, the following: (1) upon consummation of the merger, Dex One stockholders will hold approximately 60% of the common stock of Dex Media as compared to 40% held by SuperMedia stockholders and (2) Dex One's current chairman of the board of directors will continue to serve as the chairman of the board of directors of Dex Media.

Filing of Voluntary Petitions in Chapter 11

On March 18, 2013 (the "Petition Date"), Dex One and certain of its subsidiaries (collectively, the “Debtors”) filed voluntary petitions in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) seeking Chapter 11 relief under the provisions of the Bankruptcy Code. The Chapter 11 cases are being jointly administered under the caption In re Dex One Corporation, et al., Case No. 13-10533 (the “Chapter 11 Cases”). The Debtors will continue to operate their businesses and manage their properties as debtors in possession under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code. Access to court documents and other general information about the Chapter 11 Cases, including our proposed plan of reorganization and disclosure statement describing the terms of the plan of reorganization, can be found at www.epiq11.com/dexone. The Bankruptcy Court hearing to consider the approval of our plan of reorganization is currently scheduled for April 29, 2013.

The filing of the Chapter 11 Cases triggered an event of default that rendered the remaining financial obligations under the Company's $300.0 million Initial Aggregate Principal Amount of 12%/14% Senior Subordinated Notes due 2017 (“Dex One Senior Subordinated Notes”) and senior secured credit facilities automatically and immediately due and payable. However, any efforts to enforce the financial obligations under the Dex One Senior Subordinated Notes and senior secured credit facilities are stayed as a result of the filing of the Chapter 11 Cases in the Bankruptcy Court and during pendency of the Chapter 11 Cases unless the Bankruptcy Court approves a motion to enforce such provisions.

Going Concern

The Company's financial statements are prepared using accounting principles generally accepted in the United States applicable to a going concern, which contemplates the realization of assets and liquidation of liabilities in the normal course of business. The accompanying historical condensed consolidated financial statements do not include any adjustments that might be necessary if the Company is unable to continue as a going concern.

The assessment of our ability to continue as a going concern was made by management considering, among other factors: (1) the Company's voluntary Chapter 11 bankruptcy filing on March 18, 2013 and the impact it has or could have on our outstanding debt, (2) the Company's highly leveraged capital structure and the current maturity date of our senior secured credit facilities of October 24, 2014, and (3) the significant negative impact on our operating results and cash flows associated with our print products primarily as a result of (i) customer attrition, (ii) declines in overall advertising spending by our customers, (iii) the significant impact of the weak local business conditions on consumer spending in our clients' markets, (iv) an increase in competition and more fragmentation in local business search and (v) the migration of customers to digital marketing solutions.

As noted above, because the Company was unable to obtain the requisite consents to the contemplated amendments to our financing agreements from our senior secured lenders to effectuate the Mergers out of court, the Company voluntarily filed a pre-packaged bankruptcy under Chapter 11. The filing of the Chapter 11 Cases triggered an event of default that rendered the remaining financial obligations under our Dex One Senior Subordinated Notes and senior secured credit facilities automatically and immediately due and payable. Certain senior secured lenders who are party to the Support and Limited Waiver Agreement ("Support Agreement"), however, have agreed to a conditional waiver whereby they will not accelerate the financial obligations under our senior secured credit facilities upon the Company's Chapter 11 filing. The Support Agreement, including the conditional waiver noted above and the obligations of all parties to the Support Agreement, may terminate automatically upon the occurrence of certain circumstances or events if such circumstance or event has not been cured by the Company or waived unconditionally by the consenting lenders. Nonetheless, any efforts to enforce the acceleration provisions of our outstanding debt are automatically stayed as a result of filing the Chapter 11 Cases in the Bankruptcy Court and during pendency of the Chapter 11 Cases unless the Bankruptcy Court approves a motion to enforce such provisions. The Bankruptcy Court has not approved such a motion and we believe it is unlikely that the Bankruptcy Court would approve such a motion during pendency of the Chapter 11 Cases. However, there can be no assurance that this will not occur. In the event the Bankruptcy Court does permit modification of the stay and allows the acceleration of all of our outstanding debt, the Company would not have adequate cash on hand or other financial resources to satisfy all of its debt obligations. Under these circumstances, this raises substantial doubt as to whether the Company would be able to continue as a going concern for a reasonable period of time.

Because filing for Chapter 11 was done primarily to effectuate the contemplated amendments to our financing agreements and the Mergers and we expect that no unsecured creditors of the Company will be materially impacted as a result of filing for Chapter 11 as stated in our plan of reorganization, we anticipate that filing for Chapter 11 will not significantly impact our financial position, results of operations and cash flows through the Chapter 11 proceedings. If the Bankruptcy Court's stay on the acceleration provisions of our outstanding debt remains in effect until our emergence from Chapter 11 as expected, our current financial projections indicate that management expects to be able to continue to generate cash flows from operations in amounts sufficient to fund operations and meet debt service requirements through the Chapter 11 proceedings and for at least the next 12-15 months. However, no assurances can be made that our expectations noted above regarding the results or impact of the Chapter 11 Cases will occur or that our business will generate sufficient cash flows from operations to enable us to fund the Company's cash requirements because the current information used in our financial projections could change in the future as a result of changes in estimates and assumptions as well as risks noted above and in Part I - Item 1A, "Risk Factors" of our Annual Report on Form 10-K for the year ended December 31, 2012.

Management's objectives for the proposed merger and contemplated amendments to our financing agreements position the Company to operate as a going concern upon emergence from Chapter 11 and for a reasonable period of time thereafter. However, no assurances can be made that these objectives will be attained.

Accounting Matters Subsequent to Filing for Chapter 11

For periods subsequent to filing for Chapter 11, ASC 852, Reorganizations ("ASC 852") has been applied in preparing the condensed consolidated financial statements. ASC 852 requires that the financial statements distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of the business. Accordingly, certain expenses including professional fees, realized gains and losses and provisions for losses that are realized from the reorganization and restructuring process will be classified as reorganization items on the condensed consolidated statement of comprehensive income (loss). Additionally, on the condensed consolidated balance sheet, liabilities are segregated between liabilities not subject to compromise and liabilities subject to compromise. Liabilities subject to compromise are reported at their pre-petition amounts or current unimpaired values, even if they may be settled for lesser amounts. See Note 3, "Reorganization Items, Net and Liabilities Subject to Compromise" for additional information.

The accompanying condensed consolidated financial statements do not purport to reflect or provide for the consequences of filing for Chapter 11. In particular, the financial statements do not purport to show (i) as to assets, their realizable value on a liquidation basis or their availability to satisfy liabilities; (ii) as to pre-petition liabilities, the amounts that may be allowed for claims or contingencies, or the status and priority thereof; (iii) as to shareholders' equity accounts, the effects of any changes that may be made in the Company's capitalization; or (iv) as to operations, the effects of any changes that may be made to the Company's business.