Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2025
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Spin-off from Honeywell and Related Transactions On September 30, 2025 and October 29, 2025, the Company entered into certain long-term debt arrangements in connection with the Spin-off. See Note 8, “Long-Term Debt,” for additional information on these arrangements. On October 30, 2025, the Company entered into definitive agreements with Honeywell, the parent and owner of all of the Company’s issued and outstanding common shares immediately prior to the Distribution. The definitive agreements entered into between the Company and Honeywell in connection with the Spin-off set forth the terms and conditions of the Spin-off and provide a framework for the Company’s relationship with Honeywell following the Spin-off. These agreements include the Separation and Distribution Agreement, Transition Services Agreement, Tax Matters Agreement, Employee Matters Agreement, Trademark License Agreement, Intellectual Property Cross-License Agreement and Accelerator License Agreement. •The Separation and Distribution Agreement sets forth, among other things, the Company’s agreements with Honeywell regarding the principal actions to be taken in connection with the Spin-off. It also sets forth other agreements that govern certain aspects of the Company’s ongoing relationship with Honeywell after the completion of the Spin-off. •The Transition Services Agreement governs certain transitional services to be provided by Honeywell to the Company. The services, including services such as information technology support, human resources support, treasury administration support, and logistics support, will be provided for a limited time, generally for no longer than 12 months, and will be provided for specified fees, which are generally based on the cost of services provided. •The Tax Matters Agreement governs the Company’s and Honeywell’s respective rights, responsibilities and obligations with respect to tax liabilities and benefits, tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings and other matters regarding taxes. The Tax Matters Agreement provides special rules that allocate tax liabilities in the event the share distribution or certain related transactions fail to qualify as a transaction that is tax-free for U.S. federal income tax purposes (other than any cash that Honeywell shareowners receive in lieu of fractional shares). •The Employee Matters Agreement addresses employment and employee compensation and benefits matters. The Employee Matters Agreement addresses the allocation and treatment of assets and liabilities relating to employees and compensation and benefit plans and programs in which the Company’s employees participated prior to the Spin-off. •The Intellectual Property Cross-License Agreement governs the terms by which each of Solstice Advanced Materials and Honeywell, and their respective affiliates, grant and receive non-exclusive licenses to and from each other in respect of certain patents, know-how (including trade secrets) and copyrights allocated under the Separation and Distribution Agreement to use in their respective businesses and natural evolutions thereof. •The Trademark License Agreement provides Solstice Advanced Materials with a transitional period of time, from eight weeks to two years based on usage type, to phase out the Company’s use of certain names, trademarks and brands owned by or allocated to Honeywell under the Separation and Distribution Agreement. In addition, under the Trademark License Agreement, Honeywell and its affiliates grant an exclusive, royalty-bearing, one-year license to the Company under the Honeywell trademark for use in connection with the Company’s 1234yf DIY products in the U.S. and Canada (which license the Company may elect to extend once for an additional one-year period) and 10-year license (subject to certain early termination rights) to the Company under the Honeywell trademark for use in in connection with certain refrigerant products in the Middle East region. •The Accelerator License Agreement provides Solstice Advanced Materials with a perpetual, non-exclusive, royalty-free license to use, modify, enhance, and improve the Honeywell Accelerator operating model, which utilizes systems, processes, best practices and management philosophies spanning across the whole organization and benefiting customers and stakeholders (the “Honeywell Accelerator Operating Model”). Under the Accelerator License Agreement, Honeywell licenses to the Company the Honeywell Accelerator Operating Model for use in connection with the conduct of the Solstice Advanced Materials business. On October 30, 2025, the Spin-off was completed by means of a pro rata distribution of all of the Company’s issued and outstanding common shares to Honeywell’s shareholders of record as of the close of business on 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 Record Date, resulting in the Distribution of 158,727,456 of the Company’s common shares to Honeywell shareholders. In connection with the completion of the Spin-off, the Company used the net proceeds from issuance of the Notes and the borrowings under the Term Loan Facilities (see Note 8, “Long-Term Debt”) (i) to make a distribution to Honeywell of $1.5 billion and (ii) to pay fees, costs and expenses related to the Notes offering and the Senior Credit Facilities, and expects to use the remainder for general corporate purposes. 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 Nasdaq. Following the Distribution, Honeywell does not beneficially own any Solstice Advanced Materials common shares.