Business and Basis of Presentation	6 Months Ended
Business and Basis of Presentation	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	BUSINESS AND BASIS OF PRESENTATION Background Armstrong Flooring, Inc. (“AFI”) is a leading global producer of resilient flooring products for use primarily in the construction and renovation of residential, commercial and institutional buildings. AFI designs, manufactures, sources and sells resilient flooring products in North America and the Pacific Rim. When we refer to "AFI," "the Company," "we," "our," and "us" in this report, we are referring to Armstrong Flooring, Inc., a Delaware corporation, and its consolidated subsidiaries. Basis of Presentation These Condensed Consolidated Financial Statements are prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). The statements include management estimates and judgments, where appropriate. Management uses estimates to record many items including certain asset values, allowances for bad debts, inventory obsolescence, lower of cost or market or net realizable value charges, warranty reserves, workers compensation, general liability and environmental claims and income taxes. When preparing an estimate, management determines the amount based upon the consideration of relevant information. Management may confer with outside parties, including outside counsel. Actual results may differ from these estimates. In the opinion of management, all adjustments of a normal, recurring nature have been included to provide a fair statement of the results for the reporting periods presented. Operating results for the three and six months ended June 30, 2020 and 2019 included in this report are unaudited. Quarterly results are not necessarily indicative of annual income, primarily due to the different level of sales in each quarter of the year and the possibility of changes in economic conditions between periods. The accounting policies used in preparing the Condensed Consolidated Financial Statements in this Form 10-Q are the same as those used in preparing the Consolidated Financial Statements for the year ended December 31, 2019, except as noted below. These statements should therefore be read in conjunction with the Consolidated Financial Statements and notes that are included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2019. All significant intercompany transactions within AFI have been eliminated from the Condensed Consolidated Financial Statements. COVID-19 The COVID-19 pandemic has significantly impacted our operations and resulted in lower than expected revenue in 2020. In response, we have implemented several cost reduction initiatives, including reduced capital spending, implementing a furlough of certain salaried employees and reducing employee benefits. We are also pursuing a plan expected to monetize non-core assets. The impact of the pandemic on our future results is unknown. We have incurred net losses for the past several years, and negative cash flows from operations beginning in 2019. The pandemic’s impacts, our recurring losses and our negative cash flows resulted in the identification of a triggering event requiring impairment testing of our North America long-lived assets in the first quarter of 2020. The results of this testing indicated that, as of March 31, 2020, our North America long-lived assets were not impaired. Our actual second quarter 2020 results exceeded the assumptions used in our first quarter 2020 impairment test. While no long-lived asset impairment, significant inventory write-down or significant incremental accounts receivable reserves were recorded in the first six months of 2020, such charges are possible in the future, which could have a material adverse effect on our future results. Recently Adopted Accounting Standards On January 1, 2020, we adopted ASU 2016-13, "Measurement of Credit Losses on Financial Instruments." The guidance and subsequent amendments issued, requires immediate recognition of estimated credit losses that are expected to occur over the remaining life of many financial assets. The most notable impact of this ASU related to our processes around the assessment of the adequacy of our allowance for doubtful accounts on trade account receivables. We adopted using the modified retrospective transition method. The adoption of the standard did not have a material impact on our financial condition, results of operations or cash flows. On January 1, 2020, we adopted ASU 2018-13, "Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement." The guidance eliminates, adds and modifies certain disclosure requirements. Adoption of the standard did not have an impact our financial condition, results of operations or cash flows. On January 1, 2020, we adopted ASU 2018-14, "Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans." The guidance changes the disclosure requirements by eliminating certain disclosures that are no longer considered cost beneficial and added new ones that are considered pertinent. Adoption of the standard did not have an impact our financial condition, results of operations or cash flows. On January 1, 2020, we adopted ASU 2018-15, "Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract." The guidance aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal use software license. Capitalized implementation costs should be amortized over the term of the service agreement on a straight line basis and should be assessed for impairment in a manner similar to long-lived assets. We adopted using the prospective transition method. This standard did not have a material impact on our financial condition, results of operations and cash flows. Recently Issued Accounting Standards In December 2019, the FASB issued ASU 2019-12, "Income Taxes (Topic 740)." The guidance simplifies accounting for income taxes by removing certain exceptions. This new guidance is effective for fiscal years beginning after December 15, 2020 for public companies. Early adoption is permitted. We are continuing to evaluate the impact the adoption of this standard will have on our financial condition, results of operations and cash flows.