Summary of significant accounting policies (Policies)

3 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Basis of presentation and use of estimates

Basis of presentation and use of estimates

The accompanying unaudited Condensed Consolidated Financial Statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and in Article 10 of Regulation S-X. The Company has continued to follow the accounting policies set forth in the audited Consolidated Financial Statements and related notes thereto included in the Company’s 2025 Form 10-K. In the opinion of our management, these statements reflect all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of our results of operations and financial condition for the periods and as of the dates presented. Operating results for the three months ended March 31, 2026 are not necessarily indicative of the results that may be expected for the year ending December 31, 2026. The Condensed Consolidated Balance Sheet as of December 31, 2025 has been derived from the audited Consolidated Financial Statements at that date but does not include all of the information and notes required by U.S. GAAP for complete financial statements. These Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in the Company’s 2025 Form 10-K.

The preparation of the Company's Condensed Consolidated Financial Statements requires management to make certain estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenues and expenses. Such estimates include impairment of long-lived assets, impairment of goodwill, pension and other postretirement benefits, tax matters and litigation, including insurance and environmental compliance costs. These estimates and assumptions are based on management’s judgment.

Use of estimates

Estimates and underlying assumptions are reviewed on an ongoing basis. Changes in accounting estimates may be necessary if there are changes in the circumstances or experiences on which the estimate was based or as a result of new information.

Changes in estimates, including those resulting from changes in the economic environment, are reflected in the period in which the change in estimate occurs.

Cash and cash equivalents and restricted cash

Cash and cash equivalents and restricted cash

Cash and cash equivalents include cash on hand and all highly liquid investments with original maturities at the time of purchase of three months or less. Restricted cash consists of amounts held in escrow designated for exchange of assets under Section 1031 of the U.S. Internal Revenue Code of 1986, as amended.

New accounting standards

New accounting standardsRefer to the audited Consolidated Financial Statements included in the 2025 Form 10-K for impacts of new accounting standards. There were no material impacts from the adoption of new accounting standards to the Company's Condensed Consolidated Financial Statements for the three months ended March 31, 2026