Basis of Presentation and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	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, 2022, filed with the SEC on February 14, 2023. 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, valuation of acquired intangible assets, 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	Principles of ConsolidationThe 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.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements As of September 30, 2023, the Company has implemented all applicable new accounting standards and updates issued by the Financial Accounting Standards Board ("FASB") that were in effect. There were no new standards or updates during the three and nine months ended September 30, 2023 that had a material impact on the condensed consolidated financial statements.