Business Overview and Basis of Presentation	9 Months Ended
Business Overview and Basis of Presentation	Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Overview and Basis of Presentation	Business Overview and Basis of Presentation The accompanying Condensed Combined Financial Statements and notes present the combined results of operations, financial position and cash flows of the Solstice Advanced Materials business (“Solstice Advanced Materials”, “Solstice”, the “Business” or the “Company”) of Honeywell International Inc. (“Honeywell” or “Parent”). The Company is a global specialty chemicals and advanced materials company with positions in refrigerants, semiconductor materials, protective fibers, and healthcare packaging. On October 8, 2024, Honeywell announced its plan to spin off its Advanced Materials business into an independent, U.S. publicly traded company through a pro rata distribution of all of the outstanding common shares of Solstice Advanced Materials to Honeywell shareholders (the “Spin-off”) that is tax-free for U.S. federal tax purposes. On October 30, 2025, the Spin-off was consummated by means of a tax-free pro-rata distribution (the “Distribution”) of all of the issued and outstanding Solstice Advanced Materials common shares to Honeywell’s shareholders of record as of October 17, 2025 (the “Record Date”), at which time each holder of Honeywell's common shares received one Solstice Advanced Materials common share for every four Honeywell common shares held as of the close of business on the Record Date, resulting in the Distribution of 158,727,456 of the Company’s common shares to Honeywell shareholders. Upon completion of the Distribution, on October 30, 2025, the Company commenced “regular way” trading as an independent public company under the ticker symbol “SOLS” on The Nasdaq Stock Market (“Nasdaq”). Following the Distribution, Honeywell does not beneficially own any Solstice Advanced Materials common shares and will no longer consolidate Solstice Advanced Materials with Honeywell’s financial results. See Note 8, “Long-Term Debt” and Note 14, “Subsequent Events,” for additional information on the Spin-off and related transactions. For the periods prior to the Spin-off, including those presented in these Condensed Combined Financial Statements, the Business historically operated as part of Honeywell’s Energy and Sustainability Solutions reportable business segment; consequently, separate financial statements have not historically been prepared for the Business. The Condensed Combined Financial Statements have been derived from Honeywell’s historical accounting records as if the operations of the Business had been conducted independently from Honeywell and were prepared on a stand-alone basis in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) and, in the opinion of management, include all adjustments (consisting of normal, recurring adjustments, unless otherwise disclosed) necessary for a fair statement of the condensed combined results of operations, financial position, and cash flows for each period presented. The combined results for the interim periods are not necessarily indicative of results to be expected for the full year. The 2024 year-end Combined Financial Statements were derived from Honeywell’s audited financial statements. These financial statements should be read in conjunction with the audited Combined Financial Statements included in our final Information Statement, dated as of October 17, 2025 (the “Information Statement”). The Condensed Combined Financial Statements include all revenues and costs directly attributable to the Business and an allocation of expenses related to certain Honeywell corporate functions (refer to Note 3. – “Related Party Transactions”). These expenses are allocated to the Business based on a proportion of net sales. The Business and Honeywell consider these allocations to be a reasonable reflection of the utilization of services or the benefits received. However, the allocations may not be indicative of the actual expenses that would have been incurred had the Business operated as an independent, stand-alone entity, nor are they indicative of future expenses of the Business. The Condensed Combined Financial Statements include assets and liabilities specifically attributable to the Business and certain assets and liabilities held by Honeywell that are specifically identifiable or otherwise attributable to the Business. For the periods prior to the Spin-off, including those presented in these Condensed Combined Financial Statements, Honeywell used a centralized approach to cash management and financing of its operations. Accordingly, a substantial portion of the Business’ cash accounts were regularly cleared to the Parent at Honeywell’s discretion and Honeywell funded the Business’s operating and investing activities as needed. Transfers of cash between Honeywell and the Business are included within Net transfers to Parent on the Condensed Combined Statements of Cash Flows and the Condensed Combined Statements of Equity. Cash and cash equivalents in the Condensed Combined Financial Statements represent cash and cash equivalents held by, or amounts otherwise attributable to, the Business. Honeywell’s long-term debt and related interest expense are not attributed to the Business for any of the periods presented as the Business is not the legal obligor of such borrowings and Honeywell’s borrowings are not directly attributable to the Business. This arrangement is not reflective of the debt costs the Business would have incurred had it been a stand-alone business separate from Honeywell during the periods presented. All intercompany transactions and balances within the Business have been eliminated. Transactions between the Business and Honeywell are deemed to have been settled immediately through Net Parent investment. The net effect of the deemed settled transactions is reflected in the Condensed Combined Statements of Cash Flows as Net transfers to Parent within financing activities and in the Condensed Combined Balance Sheets as Net Parent investment. Within the financial statements and tables presented, certain columns and rows may not add due to the use of rounded numbers for disclosure purposes. Percentages presented are calculated from the underlying whole-dollar amounts. Certain items have been recast to conform to current-period presentation. Solstice Advanced Materials historically reports its quarterly financial information using a calendar convention; the first, second, and third quarters are consistently reported as ended on March 31, June 30, and September 30, respectively. It is Solstice Advanced Materials’ practice to establish actual quarterly closing dates using a predetermined fiscal calendar, which requires Solstice Advanced Materials’ businesses to close their books on a Saturday in order to minimize the potentially disruptive effects of quarterly closing on the Company’s business processes. The effects of this practice are generally not significant to reported results for any quarter and only exist within a reporting year. In the event differences in actual closing dates are material to year-over-year comparisons of quarterly or year-to-date results, Solstice Advanced Materials will provide appropriate disclosures. Solstice Advanced Materials’ actual closing dates for the nine months ended September 30, 2025, and 2024, were September 27, 2025, and September 28, 2024, respectively.