XML 40 R27.htm IDEA: XBRL DOCUMENT
v3.25.3

Recent Accounting Pronouncements (Policies) | 9 Months Ended
--- | ---
Sep. 30, 2025
Recent Accounting Pronouncements [Abstract] |
Basis of Presentation | Basis of Presentation The unaudited interim consolidated financial statements for the three and nine months ended September 30, 2025 and 2024 contained in this Quarterly Report were prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for all periods presented and include the accounts of the Company, its majority owned subsidiaries over which the Company exercises control and, when applicable, variable interest entities in which the Company is the primary beneficiary. The unaudited interim consolidated financial statements and other financial information included in this Quarterly Report, unless otherwise specified, have been presented to separately show the effects of discontinued operations. In the opinion of management, the accompanying unaudited consolidated balance sheets and related unaudited interim consolidated statements of operations, comprehensive income (loss), cash flows and equity include all adjustments, consisting only of normal recurring items necessary for their fair presentation in conformity with U.S. GAAP. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted in accordance with rules and regulations of the Securities and Exchange Commission ("SEC"). These unaudited interim consolidated financial statements should be read in conjunction with the Company's consolidated financial statements as of and for the year ended December 31, 2024, filed on February 21, 2025 with the SEC as part of the Company's Annual Report on Form 10-K. Operating results for the three and nine months ended September 30, 2025 are not necessarily indicative of the results to be expected for the entire year. In the ordinary course of business, the Company enters into contracts and agreements relative to a number of topics, including acquisitions, dispositions, joint ventures, supply agreements, product sales and other arrangements. The Company endeavors to describe those contracts or agreements that are material to its business, results of operations or financial position. The Company may also describe some arrangements that are not material but in which the Company believes investors may have an interest or which may have been included in a Form 8-K filing. Investors should not assume the Company has described all contracts and agreements relative to the Company's business in this Quarterly Report. For those consolidated ventures in which the Company owns or is exposed to less than 100% of the economics, the outside shareholders' interests are shown as noncontrolling interests.
Immaterial Revision of Prior Period Financial Statements | Immaterial Revision of Prior Period Financial Statements During the nine months ended September 30, 2025, the Company identified immaterial errors in the estimate of the rebates accrual for certain distributors included in Customer rebates (Note 6) and prepaid insurance included in Current Other assets, respectively. The Company evaluated the errors, both quantitatively and qualitatively, and concluded that the impact of these errors is not material to any previously issued annual or interim consolidated financial statements for the impacted periods and is not material to the current periods if left uncorrected; however, to promote the consistency and comparability of the financial statements, the Company has voluntarily revised previously reported financial information. The Company corrected these errors in the accompanying consolidated balance sheet as of December 31, 2024, decreasing Retained earnings by $46 million, increasing Total liabilities by $27 million and decreasing Total assets by $19 million. Impacts to the line items in the consolidated statements of operations for each of the three and nine months ended September 30, 2024 and the years ended December 31, 2024, 2023, 2022 and 2021 did not exceed $14 million.
Estimates and Assumptions | Estimates and Assumptions The preparation of unaudited interim consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the unaudited interim consolidated financial statements and the reported amounts of net sales, expenses and allocated charges during the reporting period. Significant estimates pertain to impairments of goodwill, intangible assets and other long-lived assets, purchase price allocations, restructuring costs and other (charges) gains, net, income taxes, pension and other postretirement benefits, asset retirement obligations, environmental liabilities and loss contingencies, among others. Actual results could differ from those estimates.
New Accounting Pronouncements, Policy | The following table provides a brief description of recent Accounting Standard Updates ("ASU") issued by the Financial Accounting Standards Board ("FASB") and final rules issued by the Securities and Exchange Commission ("SEC"):
Standard/Final Rule |  | Description |  | Effective Date |  | Effect on the Financial Statements or Other Significant Matters
In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses (DISE) and on January 6, 2025, the FASB issued ASU 2025-01, Clarifying the Effective Date. |  | The new guidance requires a public business entity ("PBE") to disclose, on an annual and interim basis, additional information about certain costs and expenses in the notes to financial statements. Specifically, in a tabular disclosure, the amounts of (a) purchases of inventory; (b) employee compensation; (c) depreciation; (d) intangible asset amortization; and (e) depreciation, depletion, and amortization recognized as part of oil- and gas-producing activities (or other amounts of depletion expense) included in each relevant expense caption. Within the same tabular disclosure, a PBE is required to include certain expense, gain, or loss amounts that are already required to be disclosed under U.S. GAAP. Additionally, a PBE is required to disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively. The guidance also requires a PBE to disclose the total amount of selling expenses and, in annual reporting periods, an entity's definition of selling expenses. |  | Effective for annual periods beginning after December 15, 2026, and interim periods within annual periods beginning after December 15, 2027. Early adoption is permitted. |  | The Company is currently evaluating the impact of the adoption on its financial statement disclosures.
Standard/Final Rule |  | Description |  | Effective Date |  | Effect on the Financial Statements or Other Significant Matters
In March 2024, the SEC issued Release No. 33-11275, The Enhancement and Standardization of Climate-Related Disclosures for Investors. |  | The final rule will require the disclosure of Scope 1 and Scope 2 greenhouse gas emissions, if material, which will be subject to phased-in assurance requirements, governance of climate-related risks, risk management processes and climate-related targets and goals. Within the notes to financial statements, the final rule requires disclosure of certain climate-related financial statement effects and metrics. |  | Phased-in and effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The SEC stayed the effectiveness of the final rule in April 2024, pending judicial review. In March 2025, the SEC voted to end its defense of the final rule and, in July 2025, asked the Court of Appeals to resolve the merits of the challenge to the final rules. In September 2025, the Court of Appeals ordered the litigation to be held in abeyance pending further action from the SEC. |  | The Company is currently evaluating the impact of the adoption on its financial statement disclosures.
In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures. |  | The new guidance requires an entity to disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. Additionally, the guidance requires an entity to disclose annual income taxes paid (net of refunds received) disaggregated by federal (national), state and foreign taxes and disaggregate the information by jurisdiction based on a quantitative threshold. The guidance also requires an entity to disclose income (loss) from continuing operations before income tax expense (benefit) disaggregated between domestic and foreign and income tax expense (benefit) from continuing operations disaggregated by federal (national), state and foreign. |  | Effective for annual periods beginning after December 15, 2024. Early adoption is permitted. |  | The Company is currently evaluating the impact of the adoption on its financial statement disclosures.
Standard/Final Rule |  | Description |  | Effective Date |  | Effect on the Financial Statements or Other Significant Matters
In November 2023, the FASB issued ASU 2023-07, Improvements to Reportable Segment Disclosures. |  | The new guidance requires an entity to disclose, on an annual and interim basis, significant segment expenses that are regularly provided to the chief operating decision maker ("CODM") and included within segment profit or loss, as well as an amount of other segment items by reportable segment and a description of its composition. Additionally, the guidance requires an entity to disclose the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. The update is required to be applied retrospectively to prior periods presented, based on the significant segment expense categories identified and disclosed in the period of adoption. |  | Effective for annual periods beginning after December 15, 2023, and for interim periods beginning after December 15, 2024. Early adoption is permitted. |  | The Company adopted the new guidance effective for the year ended December 31, 2024. The adoption of the new guidance did not have a material impact to the Company.

X
- Definition Recent Accounting Pronouncements [Abstract] + References No definition available. + Details
Name: | ce_RecentAccountingPronouncementsAbstract
Namespace Prefix: | ce_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-4 + Details
Name: | us-gaap_BasisOfAccountingPolicyPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for reporting any exceptions to the comparability of prior year financial data with data shown for the most recent accounting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483504/205-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483478/205-10-45-3 + Details
Name: | us-gaap_ComparabilityOfPriorYearFinancialData
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478671/942-235-S50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477314/942-235-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-12 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-9 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482836/275-10-55-6 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-6 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-4 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-1 + Details
Name: | us-gaap_UseOfEstimates
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration