BASIS OF PRESENTATION (Policies)	3 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Prior to the Separation on November 1, 2025, Qnity had operated as a part of DuPont; consequently, stand-alone interim financial statements were not historically prepared for Qnity. For the period subsequent to November 1, 2025, the financial statements are presented on a consolidated basis as the Company became a standalone public company. In the opinion of management, the accompanying unaudited interim Consolidated Financial Statements reflect all adjustments (including normal recurring adjustments) which are considered necessary for the fair statement of the results for the periods presented. The unaudited interim Consolidated Financial Statements include the accounts of the Company and all of its subsidiaries in which a controlling interest is maintained. Results from interim periods should not be considered indicative of results for the full year. These unaudited interim Consolidated Financial Statements should also be read in conjunction with the audited annual Consolidated Financial Statements and notes thereto for the year ended December 31, 2025, collectively referred to as the “2025 Annual Financial Statements” as contained in the Company’s Annual Report on Form 10-K (the "Annual Report") filed on February 26, 2026 with the U.S. Securities and Exchange Commission (“SEC”) pursuant to the Securities Exchange Act of 1934, as amended. Beginning in fiscal 2026, the Company presents costs incurred in connection with a multi‑year transformation plan, designed to strengthen operational productivity, enhance commercial and innovation excellence, and optimize the Company’s presence in key markets, within a single operating expense line titled “Transformation, integration and other charges” in the Consolidated Statements of Operations. The transformation plan does not represent a company‑wide restructuring event; rather, it consists of a series of discrete initiatives, including IT independence and other separation‑related activities, integration efforts, and productivity programs. Consistent with the update above, we combined our historical “Restructuring and other asset related charges” and “Acquisition, integration and separation costs” into the expense caption, “Transformation, integration and other charges” to simplify our presentation and better reflect how management evaluates these activities. Prior period amounts presented in this Quarterly Report on Form 10-Q have been recast to conform to the current period presentation. This change in presentation did not affect total operating expenses, operating income, net income, earnings per share, or cash flows for any period presented.
Recently Adopted Accounting Guidance and Accounting Guidance Issued But Not Adopted	Recently Adopted Accounting Guidance In December 2023, the FASB issued Accounting Standards Update No. 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures" ("ASU 2023-09") to improve transparency and disclosure requirements for the rate reconciliation, income taxes paid and other tax disclosures. The amendments in ASU 2023-09 are effective for annual fiscal years beginning after December 15, 2024, on a prospective basis. The disclosures were implemented as required for the year-ended December 31, 2025 in the Company's Annual Report. In December 2025, the FASB issued Accounting Standards Update No. 2025-12, "Codification Improvements", which addresses stakeholders' feedback on the Accounting Standards Codification and makes other incremental improvements to generally accepted accounting principles. Specifically, Issue 10 of ASU 2025-12 added a clarification within ASC 505-30 to provide a policy election to permit the excess of repurchase price over par value in a stock repurchase transaction to be accounted for entirely as a reduction in additional paid-in capital when the repurchased shares are retired. The Company adopted Issue 10 of ASU 2025-12 during the quarter ended March 31, 2026. Accounting Guidance Issued But Not Adopted at March 31, 2026 In November 2024, the FASB issued Accounting Standards Update No. 2024-03, "Income Statement: Reporting Comprehensive Income (Topic 220): Expense Disaggregation Disclosures" ("ASU 2024-03") to improve disclosures about the nature of expenses within line items on the statements of operations. The amendments in ASU 2024-03 are effective for the Company's 2027 annual report and subsequent interim periods; however, early adoption is permitted. The amendments can be applied prospectively or retrospectively to all periods presented. The Company is currently evaluating the impact of adopting this guidance. In September 2025, the FASB issued Accounting Standards Update No. 2025-06, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software” (“ASU 2025-06”) to modernize the accounting for internal-use software costs and improve operability of the guidance across different software development project stages. The amendments in ASU 2025-06 are effective for the Company’s 2028 annual and quarterly reports; however, early adoption is permitted. The amendments can be applied prospectively, retrospectively, or using a modified transition approach. The Company is currently evaluating the impact of adopting this guidance.

BASIS OF PRESENTATION (Policies)

3 Months Ended

Mar. 31, 2026

Prior to the Separation on November 1, 2025, Qnity had operated as a part of DuPont; consequently, stand-alone interim financial statements were not historically prepared for Qnity. For the period subsequent to November 1, 2025, the financial statements are presented on a consolidated basis as the Company became a standalone public company. In the opinion of management, the accompanying unaudited interim Consolidated Financial Statements reflect all adjustments (including normal recurring adjustments) which are considered necessary for the fair statement of the results for the periods presented. The unaudited interim Consolidated Financial Statements include the accounts of the Company and all of its subsidiaries in which a controlling interest is maintained. Results from interim periods should not be considered indicative of results for the full year. These unaudited interim Consolidated Financial Statements should also be read in conjunction with the audited annual Consolidated Financial Statements and notes thereto for the year ended December 31, 2025, collectively referred to as the “2025 Annual Financial Statements” as contained in the Company’s Annual Report on Form 10-K (the "Annual Report") filed on February 26, 2026 with the U.S. Securities and Exchange Commission (“SEC”) pursuant to the Securities Exchange Act of 1934, as amended.

Beginning in fiscal 2026, the Company presents costs incurred in connection with a multi‑year transformation plan, designed to strengthen operational productivity, enhance commercial and innovation excellence, and optimize the Company’s presence in key markets, within a single operating expense line titled “Transformation, integration and other charges” in the Consolidated Statements of Operations. The transformation plan does not represent a company‑wide restructuring event; rather, it consists of a series of discrete initiatives, including IT independence and other separation‑related activities, integration efforts, and productivity programs.

Consistent with the update above, we combined our historical “Restructuring and other asset related charges” and “Acquisition, integration and separation costs” into the expense caption, “Transformation, integration and other charges” to simplify our presentation and better reflect how management evaluates these activities. Prior period amounts presented in this Quarterly Report on Form 10-Q have been recast to conform to the current period presentation. This change in presentation did not affect total operating expenses, operating income, net income, earnings per share, or cash flows for any period presented.

Recently Adopted Accounting Guidance and Accounting Guidance Issued But Not Adopted

Recently Adopted Accounting Guidance

In December 2023, the FASB issued Accounting Standards Update No. 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures" ("ASU 2023-09") to improve transparency and disclosure requirements for the rate reconciliation, income taxes paid and other tax disclosures. The amendments in ASU 2023-09 are effective for annual fiscal years beginning after December 15, 2024, on a prospective basis. The disclosures were implemented as required for the year-ended December 31, 2025 in the Company's Annual Report.

In December 2025, the FASB issued Accounting Standards Update No. 2025-12, "Codification Improvements", which addresses stakeholders' feedback on the Accounting Standards Codification and makes other incremental improvements to generally accepted accounting principles. Specifically, Issue 10 of ASU 2025-12 added a clarification within ASC 505-30 to provide a policy election to permit the excess of repurchase price over par value in a stock repurchase transaction to be accounted for entirely as a reduction in additional paid-in capital when the repurchased shares are retired. The Company adopted Issue 10 of ASU 2025-12 during the quarter ended March 31, 2026.

Accounting Guidance Issued But Not Adopted at March 31, 2026

In November 2024, the FASB issued Accounting Standards Update No. 2024-03, "Income Statement: Reporting Comprehensive Income (Topic 220): Expense Disaggregation Disclosures" ("ASU 2024-03") to improve disclosures about the nature of expenses within line items on the statements of operations. The amendments in ASU 2024-03 are effective for the Company's 2027 annual report and subsequent interim periods; however, early adoption is permitted. The amendments can be applied prospectively or retrospectively to all periods presented. The Company is currently evaluating the impact of adopting this guidance.

In September 2025, the FASB issued Accounting Standards Update No. 2025-06, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software” (“ASU 2025-06”) to modernize the accounting for internal-use software costs and improve operability of the guidance across different software development project stages. The amendments in ASU 2025-06 are effective for the Company’s 2028 annual and quarterly reports; however, early adoption is permitted. The amendments can be applied prospectively, retrospectively, or using a modified transition approach. The Company is currently evaluating the impact of adopting this guidance.