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Basis of Presentation | 9 Months Ended
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Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Basis of Presentation | (1) Basis of Presentation The accompanying unaudited condensed consolidated financial statements of Fastenal Company and subsidiaries (collectively referred to as the company, Fastenal, or by terms such as we, our, or us) have been prepared in accordance with U.S. generally accepted accounting principles ('GAAP') for interim financial information. They do not include all information and footnotes required by U.S. GAAP for complete financial statements. However, except as described herein, there has been no material change in the information disclosed in the Notes to Consolidated Financial Statements included in our consolidated financial statements as of and for the year ended December 31, 2018. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Stock Split On April 17, 2019, the board of directors approved a two-for-one stock split of the company's outstanding common stock. Holders of the company's common stock, par value $0.01 per share, at the close of business on May 2, 2019, received one additional share of common stock for every share of common stock they owned. The stock split took effect at the close of business on May 22, 2019. All historical common stock share and per share information for all periods presented in the accompanying condensed consolidated financial statements and notes thereto have been retroactively adjusted to reflect the stock split. Recently Adopted Accounting Pronouncements Effective January 1, 2019, we adopted the Financial Accounting Standards Board ('FASB') Accounting Standards Update ('ASU') 2016-02, Leases, which requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. The original guidance required application on a modified retrospective basis with the earliest period presented. In August 2018, the FASB issued ASU 2018-11, Targeted Improvements to ASC 842, which included an option to not restate comparative periods in transition and elect to use the effective date of ASC 842, Leases, as the date of initial application of transition, which we elected. As a result of the adoption of ASC 842 on January 1, 2019, we recorded both operating lease right-of-use ('ROU') assets of $227.5 and lease liabilities of $228.3. The adoption of ASC 842 had an immaterial impact on our Condensed Consolidated Statement of Earnings and Condensed Consolidated Statement of Cash Flows for both the nine-month and three-month periods ended September 30, 2019. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard which allowed us to carry forward the historical lease classification. Additional information and disclosures required by this new standard are contained in Note 5, 'Operating Leases'.

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- Definition The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -URI http://asc.fasb.org/topic&trid=2122149 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -URI http://asc.fasb.org/topic&trid=2197479 + Details
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