Basis of Presentation and Recently Issued Accounting Pronouncement	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Recently Issued Accounting Pronouncement	Basis of Presentation and Recently Issued Accounting Pronouncements Basis of Presentation The Company prepares its condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP"). In the opinion of management, the condensed consolidated financial statements reflect all adjustments of a normal recurring nature that are necessary for a fair statement of the results for the interim periods presented. Interim results are not necessarily indicative of results for a full year. The year-end condensed consolidated balance sheet data was derived from audited financial statements, however, these condensed consolidated financial statements do not include all of the disclosures required for complete annual financial statements and, accordingly, certain information, footnotes and disclosures normally included in annual financial statements, prepared in accordance with U.S. GAAP, have been condensed or omitted in accordance with Securities and Exchange Commission ("SEC") rules and regulations. The Company believes that the disclosures made are adequate to make the information not misleading. Accordingly, the condensed consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed with the SEC on February 18, 2021. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and footnotes. Actual results could differ materially from those estimates. Significant estimates inherent in the preparation of the condensed consolidated financial statements include receivables allowances, depreciation of rental equipment, the recoverability of long-lived assets, useful lives and impairment of long-lived tangible and intangible assets including goodwill and trade name, pension and postretirement benefits, valuation of stock-based compensation, reserves for litigation and other contingencies and accounting for income taxes, among others. Principles of Consolidation The condensed consolidated financial statements include the accounts of Herc Holdings and its wholly owned subsidiaries. In the event that the Company is a primary beneficiary of a variable interest entity, the assets, liabilities and results of operations of the variable interest entity are included in the Company's condensed consolidated financial statements. The Company accounts for investments in joint ventures using the equity method when it has significant influence but not control and is not the primary beneficiary. All significant intercompany transactions have been eliminated in consolidation. COVID-19 Update Since March 2020, federal, state, provincial and local governments have implemented various measures in an effort to contain the COVID-19 virus, including physical distancing, travel restrictions, border closures, limitations on public gatherings, work from home, supply chain logistical changes and closure of non-essential businesses. The Company's business was deemed essential and was allowed to remain open, however, many industries in which its customers operate were required to temporarily close their facilities or delay or cancel projects and events. The Company has seen economic recovery within the industry and business since the second quarter of 2020 and is in a position for growth in 2021 by opening greenfield locations and returning to more normalized rental equipment expenditures by adding select fleet in high growth regions. Despite the recovery the Company is seeing, the impact of the COVID-19 pandemic continues to evolve and the recovery could be slowed or reversed by a number of factors, including a widespread resurgence in COVID-19 infections, whether due to the spread of variants of the virus or otherwise, the availability and rate of vaccinations, and the rate in which state and local governments are re-opening businesses or, in certain jurisdictions, reversing re-opening decisions. Therefore, we cannot predict the extent to which our financial condition, results of operations or cash flows will ultimately be impacted. Recently Issued Accounting Pronouncements Adopted Facilitation of the Effects of Reference Rate Reform on Financial Reporting In March 2020, the Financial Accounting Standards Board ("FASB") issued guidance that provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. The Company adopted this guidance during the first quarter of 2021 and it did not have a material impact on its financial position, results of operations or cash flows.