Description of Business and Summary of Significant Accounting Policies |
6 Months Ended |
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Jun. 30, 2026 | |
| Accounting Policies [Abstract] | |
| Description of Business and Summary of Significant Accounting Policies | 1. Description of Business and Summary of Significant Accounting Policies1.1. Description of Business Unless the context otherwise requires, or unless indicated otherwise, “we”, “us”, “our”, “Smurfit Westrock” and “the Company” refer to the business of Smurfit Westrock plc, its wholly-owned subsidiaries and its partially-owned consolidated subsidiaries. Smurfit Westrock plc is a company limited by shares that is incorporated in Ireland. We are a multinational provider of sustainable fiber-based paper and packaging solutions. We partner with our customers to provide differentiated, sustainable paper and packaging solutions that enhance our customers’ prospects of success in their markets. Our team members support customers around the world from our operating and business locations in North America, South America, Europe, Asia, Africa, and Australia. 1.2. Basis of PresentationWe derived the Condensed Consolidated Balance Sheet at December 31, 2025 from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 (the “2025 Consolidated Financial Statements”). In the opinion of management, all normal recurring adjustments necessary for a fair statement of the Condensed Consolidated Financial Statements have been included for the interim periods reported. The accompanying Unaudited Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the U.S. for interim financial information and with Article 10 of Regulation S-X of the Securities and Exchange Commission. Accordingly, they omit certain notes and other information from the 2025 Consolidated Financial Statements. Therefore, these Condensed Consolidated Financial Statements should be read in conjunction with the 2025 Consolidated Financial Statements. The results for the three and six months ended June 30, 2026 are not necessarily indicative of results that may be expected for the full year. The preparation of the Condensed Consolidated Financial Statements requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the Condensed Consolidated Financial Statements, disclosures about gain contingencies and contingent liabilities and the reported amounts of revenues and expenses, including income taxes during the reporting period. Due to rounding, numbers presented throughout this document may not add up precisely to the totals provided and percentages may not precisely reflect the absolute figures. 1.3. Significant Accounting PoliciesThere have been no changes to the Company’s significant accounting policies as described in “Note 1. Description of Business and Summary of Significant Accounting Policies” of the 2025 Consolidated Financial Statements. 1.4. New Accounting Standards Recently AdoptedDuring the six months ended June 30, 2026 there were no newly issued or newly applicable accounting pronouncements adopted that had, or are expected to have, a material impact on the Condensed Consolidated Financial Statements. 1.5. New Accounting Standards Not Yet AdoptedIn November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses” (“ASU 2024-03”). This ASU requires new financial statement disclosures disaggregating prescribed expense categories within relevant income statement expense captions. ASU 2024-03 will be effective for fiscal years beginning after December 15, 2026, and interim periods beginning after December 15, 2027. Adoption is either with a prospective method or a retrospective method of transition. Early adoption is permitted. The Company is currently evaluating the impact of this standard on its disclosures in the consolidated financial statements.
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