Organization and Description of Business	12 Months Ended
Apr. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of Business Sunbelt Rentals Holdings, Inc. (including subsidiaries, the “Company” or “Sunbelt”) (NYSE: SUNB; LSE: SUNB) was formed as a Delaware corporation in February 2025. Sunbelt is an international equipment rental company with national networks in the United States (“U.S.”), Canada and the United Kingdom (“U.K.”). The Company rents a broad range of construction, industrial, general and specialty equipment across a wide variety of applications to a wide customer base. Effective on February 27, 2026 (the “Effective Date”), the Company implemented a new corporate structure by completing a U.K. court-sanctioned scheme of arrangement under the U.K. Companies Act 2006 (the “Scheme”). This resulted in (i) Ashtead Group plc becoming a direct, wholly owned subsidiary of Sunbelt Rentals Holdings Inc. and (ii) the shareholders of Ashtead Group plc at the designated record time for the Scheme no longer holding shares of Ashtead Group plc but instead holding shares of common stock of Sunbelt Rentals Holdings, Inc.. Each Ashtead Group plc shareholder received one share of Sunbelt Rentals Holdings, Inc. common stock, par value $0.01 per share, for each Ashtead Group plc ordinary share held immediately prior to completion of the Scheme. As a result of the Scheme, Sunbelt Rentals Holdings, Inc. became the successor issuer to Ashtead Group plc, which was subsequently converted into a private company and renamed Ashtead Group Limited. Prior to completion of the Scheme, Sunbelt Rentals Holdings, Inc. had no material assets, liabilities, operations, contingencies or commitments other than those related to its formation and the Redomiciliation. The Scheme was accounted for as a transaction among entities under common control. Accordingly, the historical consolidated financial statements of Ashtead Group plc became the historical consolidated financial statements of Sunbelt Rentals Holdings, Inc. The Redomiciliation did not result in a change in the underlying business, operations, strategy, assets, liabilities or cash flows of the Company. In the current period, these consolidated financial statements reflect the effects of the new corporate structure with Sunbelt Rentals Holdings, Inc. as the ultimate parent company. For periods prior to the Effective Date, these consolidated financial statements reflect the historical results, assets, liabilities and cash flows of Ashtead Group Limited and its subsidiaries as the accounting predecessor. “Sunbelt,” “we,” “us” and “our” for periods prior to the Effective Date refer to Ashtead Group plc and its consolidated subsidiaries, and references for periods on or after the Effective Date refer to Sunbelt Rentals Holdings, Inc. and its consolidated subsidiaries.

Sunbelt Rentals Holdings, Inc. (including subsidiaries, the “Company” or “Sunbelt”) (NYSE: SUNB; LSE: SUNB) was formed as a Delaware corporation in February 2025. Sunbelt is an international equipment rental company with national networks in the United States (“U.S.”), Canada and the United Kingdom (“U.K.”). The Company rents a broad range of construction, industrial, general and specialty equipment across a wide variety of applications to a wide customer base.

Effective on February 27, 2026 (the “Effective Date”), the Company implemented a new corporate structure by completing a U.K. court-sanctioned scheme of arrangement under the U.K. Companies Act 2006 (the “Scheme”). This resulted in (i) Ashtead Group plc becoming a direct, wholly owned subsidiary of Sunbelt Rentals Holdings Inc. and (ii) the shareholders of Ashtead Group plc at the designated record time for the Scheme no longer holding shares of Ashtead Group plc but instead holding shares of common stock of Sunbelt Rentals Holdings, Inc.. Each Ashtead Group plc shareholder received one share of Sunbelt Rentals Holdings, Inc. common stock, par value $0.01 per share, for each Ashtead Group plc ordinary share held immediately prior to completion of the Scheme. As a result of the Scheme, Sunbelt Rentals Holdings, Inc. became the successor issuer to Ashtead Group plc, which was subsequently converted into a private company and renamed Ashtead Group Limited.

Prior to completion of the Scheme, Sunbelt Rentals Holdings, Inc. had no material assets, liabilities, operations, contingencies or commitments other than those related to its formation and the Redomiciliation. The Scheme was accounted for as a transaction among entities under common control. Accordingly, the historical consolidated financial statements of Ashtead Group plc became the historical consolidated financial statements of Sunbelt Rentals Holdings, Inc. The Redomiciliation did not result in a change in the underlying business, operations, strategy, assets, liabilities or cash flows of the Company.

In the current period, these consolidated financial statements reflect the effects of the new corporate structure with Sunbelt Rentals Holdings, Inc. as the ultimate parent company. For periods prior to the Effective Date, these consolidated financial statements reflect the historical results, assets, liabilities and cash flows of Ashtead Group Limited and its subsidiaries as the accounting predecessor. “Sunbelt,” “we,” “us” and “our” for periods prior to the Effective Date refer to Ashtead Group plc and its consolidated subsidiaries, and references for periods on or after the Effective Date refer to Sunbelt Rentals Holdings, Inc. and its consolidated subsidiaries.