Union Carbide 10-K 4 Feb 25 2024 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Feb. 04, 2025	Jun. 30, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	1-1463
Entity Registrant Name	UNION CARBIDE CORPORATION
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	13-1421730
Entity Address, Address Line One	7501 State Highway 185 North
Entity Address, City or Town	Seadrift
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77983
City Area Code	361
Local Phone Number	553-2769
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		935.51
Entity Central Index Key	0000100790
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Public Float			$ 0
No Insider Trading Flag	true
ICFR Auditor Attestation Flag	false
Auditor Firm ID	34
Auditor Location	Midland, Michigan
Auditor Name	DELOITTE & TOUCHE LLP

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Net trade sales	$ 120	$ 147	$ 191
Net sales to related companies	4,157	4,149	5,258
Total net sales	4,277	4,296	5,449
Cost of sales	3,968	3,804	4,586
Research and development expenses	22	22	26
Selling, general and administrative expenses	6	10	10
Restructuring Charges	0	14	0
Total sundry income (expense) - net	(110)	(25)	(53)
Interest Income, Other	134	49	18
Interest expense and amortization of debt discount	8	16	26
Income Before Income Taxes	297	454	766
Provision (Credit) for income taxes	47	73	172
Net Income Attributable to Union Carbide Corporation	$ 250	$ 381	$ 594

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income attributable to Union Carbide Corporation	$ 250	$ 381	$ 594
Other comprehensive income (loss), net of tax
Cumulative translation adjustments	1	1	(1)
Pension and other postretirement benefit plans	(2)	58	150
Net other comprehensive income	(1)	59	149
Comprehensive income attributable to Union Carbide Corporation	$ 249	$ 440	$ 743

UCC Consolidated Balance Sheet

UCC Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 11	$ 11
Trade (net of allowance for doubtful receivables 2024: $—; 2023: $—)	16	16
Accounts Receivable from Related Companies	846	700
Other	18	14
Income taxes receivable	42	238
Notes receivable from related companies	593	799
Inventories	296	227
Other current assets	31	36
Total current assets	1,853	2,041
Investments in related companies	237	237
Other investments	12	15
Noncurrent receivables	31	99
Noncurrent receivables from related companies	1,642	1,598
Total investments	1,922	1,949
Property	5,732	5,406
Less accumulated depreciation	4,611	4,512
Net property	1,121	894
Intangible assets (net of accumulated amortization 2024: $95; 2023: $93)	6	7
Operating lease, right-of-use asset	61	85
Deferred Tax Assets, Deferred Income	253	257
Deferred charges and other assets	17	39
Total other assets	337	388
Total Assets	5,233	5,272
Notes payable to related companies	19	68
Notes Payable to Bank	0	1
Long-term debt due within one year	126	1
Trade	336	286
Accounts payable to related company	470	420
Other	30	12
Operating lease liabilities - current	12	17
Income taxes payable	21	30
Asbestos-related liabilities - current	78	80
Accrued and other current liabilities	136	116
Total current liabilities	1,228	1,031
Long-term Debt and Lease Obligation	143	259
Pension and other postretirement benefits - noncurrent	402	395
Asbestos-related liabilities - noncurrent	713	787
Operating lease liabilities - noncurrent	49	68
Other noncurrent obligations	512	567
Total other noncurrent liabilities	1,676	1,817
Common stock (authorized: 1,000 shares of $0.01 par value each; issued: 935.51 shares)	0	0
Additional paid-in capital	1,034	1,034
Retained earnings	2,496	2,474
Accumulated other comprehensive loss	(1,344)	(1,343)
Equity, Including Portion Attributable to Noncontrolling Interest, Total	2,186	2,165
Total Liabilities and Equity	$ 5,233	$ 5,272

Consolidated Balance Sheet Pare

Consolidated Balance Sheet Parentheticals - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss, Current	$ 0	$ 0
Finite-Lived Intangible Assets, Accumulated Amortization	$ 95	$ 93
Common stock, shares authorized (in shares)	1,000	1,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	935.51	935.51
Common stock (authorized: 1,000 shares of $0.01 par value each; issued: 935.51 shares)	$ 0	$ 0
Accumulated other comprehensive loss	(1,344)	(1,343)
Additional paid-in capital	1,034	1,034
Retained earnings	$ 2,496	$ 2,474

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities
Net income attributable to Union Carbide Corporation	$ 250	$ 381	$ 594
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	144	170	199
Provision (credit) for deferred income tax	4	(18)	5
Net gain on sales of property and investments	(1)	(1)	(3)
Net gain on sale of ownership interest in related party	(2)	(206)	0
Restructuring and asset related charges - net	0	14	0
Net periodic pension benefit cost	27	184	9
Pension contributions	(2)	(2)	(3)
Changes in assets and liabilities:
Accounts and notes receivable	(4)	31	14
Related company receivables	118	225	658
Inventories	(69)	22	(6)
Accounts payable	68	4	(89)
Related company payables	1	26	(190)
Asbestos-related payments	(76)	(80)	(69)
Other assets and liabilities	108	(52)	75
Cash provided by operating activities	566	698	1,194
Change in noncurrent receivable from related company	(3)	6	7
Investing Activities
Capital expenditures	(338)	(274)	(143)
Proceeds from sale of ownership interest in related party	2	206	0
Proceeds from sales of property and investments	4	12	3
Cash used for investing activities	(335)	(50)	(133)
Financing Activities
Dividends paid to parent	(228)	(512)	(1,063)
Changes in short-term notes payable	(1)	(3)	4
Repayment of Long-Term Debt, Long-Term Lease Obligation, and Capital Security	(2)	(132)	(3)
Cash used for financing activities	(231)	(647)	(1,062)
Summary
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	0	1	(1)
Cash and cash equivalents at beginning of year	11	10	11
Cash and cash equivalents at end of year	$ 11	$ 11	$ 10

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accum. Other Comp Loss
Beginning balance at Dec. 31, 2021		$ 0	$ 141	$ 3,074	$ (1,551)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustments to Additional Paid in Capital, Other			0
Net income attributable to Union Carbide Corporation	$ 594			594
Dividends declared				(1,063)
Other Comprehensive Income (Loss), Net of Tax	149				149
Ending balance at Dec. 31, 2022	1,344	0	141	2,605	(1,402)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustments to Additional Paid in Capital, Other	893		893
Net income attributable to Union Carbide Corporation	381			381
Dividends declared				(512)
Other Comprehensive Income (Loss), Net of Tax	59				59
Ending balance at Dec. 31, 2023	2,165	0	1,034	2,474	(1,343)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustments to Additional Paid in Capital, Other			0
Net income attributable to Union Carbide Corporation	250			250
Dividends declared				(228)
Other Comprehensive Income (Loss), Net of Tax	(1)				(1)
Ending balance at Dec. 31, 2024	$ 2,186	$ 0	$ 1,034	$ 2,496	$ (1,344)

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Notes)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation and Basis of Presentation Except as otherwise indicated by the context, the terms "Corporation" and "UCC" as used herein mean Union Carbide Corporation and its consolidated subsidiaries. The accompanying consolidated financial statements of the Corporation were prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") and include the assets, liabilities, revenues and expenses of all majority-owned subsidiaries over which the Corporation exercises control and, when applicable, entities for which the Corporation has a controlling financial interest. Investments in nonconsolidated affiliates (20-50 percent owned companies, joint ventures and partnerships) are accounted for using the equity method. The Corporation is a wholly owned subsidiary of The Dow Chemical Company ("TDCC"). In accordance with the accounting guidance for earnings per share, the presentation of earnings per share is not required in financial statements of wholly owned subsidiaries. TDCC conducts its worldwide operations through global businesses and the Corporation's business activities comprise components of TDCC's global businesses rather than stand-alone operations. Further, the Corporation sells substantially all of its products to TDCC in order to simplify the customer interface process. The Corporation's Board of Directors ("Board"), acting pursuant to the authority delegated to it by TDCC, functions as the Corporation's chief operating decision maker ("CODM") to assess UCC's results and allocate resources for its operations. The Corporation's results are reported as a single operating segment as the consolidated statements of income are presented to the CODM without further disaggregation. Intercompany transactions and balances are eliminated in consolidation. Transactions with the Corporation’s parent company, TDCC, and other subsidiaries of TDCC, have been reflected as related company transactions in the consolidated financial statements. See Note 17 for additional information. Use of Estimates in Financial Statement Preparation The preparation of financial statements in accordance with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. The Corporation's consolidated financial statements include amounts that are based on management's best estimates and judgments. Actual results could differ from those estimates. Significant Accounting Policies Asbestos-Related Matters Accruals for asbestos-related matters, including defense and processing costs, are recorded based on an analysis of claim and resolution activity, defense spending and pending and future claims. These accruals are assessed at each balance sheet date to determine if the asbestos-related liability remains appropriate. Accruals for asbestos-related matters are included in the consolidated balance sheets in "Asbestos-related liabilities - current" and "Asbestos-related liabilities - noncurrent." See Note 12 for additional information. Legal Costs The Corporation expenses legal costs as incurred, with the exception of defense and processing costs associated with asbestos-related matters. Foreign Currency Translation While the Corporation's consolidated subsidiaries are primarily based in the United States, the Corporation has small subsidiaries in Asia Pacific and the rest of the world. For those subsidiaries, the local currency has been primarily used as the functional currency. Translation gains and losses of those operations that use local currency as the functional currency are included in the consolidated balance sheets in "Accumulated other comprehensive loss" ("AOCL"). Where the U.S. dollar is used as the functional currency, foreign currency translation gains and losses are reflected in income. Environmental Matters Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated based on current law and existing technologies. These accruals are adjusted periodically as assessment and remediation efforts progress or as additional technical or legal information becomes available. Accruals for environmental liabilities are included in the consolidated balance sheets in "Accrued and other current liabilities" and "Other noncurrent obligations" at undiscounted amounts. Accruals for related insurance or other third-party recoveries for environmental liabilities are recorded when it is probable that a recovery will be realized and are included in the consolidated balance sheets in "Accounts receivable - Other." Environmental costs are capitalized if the costs extend the life of the property, increase its capacity, and/or mitigate or prevent contamination from future operations. Environmental costs are also capitalized in recognition of legal asset retirement obligations resulting from the acquisition, construction and/or normal operation of a long-lived asset. Costs related to environmental contamination treatment and cleanup are charged to expense. Estimated future incremental operations, maintenance and management costs directly related to remediation are accrued when such costs are probable and reasonably estimable. Cash and Cash Equivalents Cash and cash equivalents include time deposits and investments with maturities of three months or less at the time of purchase. Financial Instruments The Corporation calculates the fair value of financial instruments using quoted market prices when available. When quoted market prices are not available for financial instruments, the Corporation uses standard pricing models with market-based inputs that take into account the present value of estimated future cash flows. Inventories Inventories are stated at the lower of cost or net realizable value. The method of determining cost for each subsidiary varies among last-in, first-out ("LIFO"); first-in, first-out ("FIFO"); and average cost, and is used consistently from year to year. The Corporation routinely utilizes exchange, swap and tolling arrangements with other companies for raw materials and finished goods to increase sourcing options, shorten delivery times, and reduce freight and other transportation costs. These transactions are treated as non-monetary exchanges and are valued at cost. Property Land, buildings and equipment are carried at cost less accumulated depreciation or amortization. Property under finance lease agreements is carried at the present value of lease payments over the lease term less accumulated amortization. Depreciation is based on the estimated service lives of depreciable assets and is calculated using the straight-line method. Fully depreciated assets are retained in property and accumulated depreciation accounts until they are disposed. In the case of disposals, assets and related accumulated depreciation are removed from the accounts, and the net amounts, less proceeds from disposal, are included in income. Impairment and Disposal of Long-Lived Assets The Corporation evaluates long-lived assets (property, finite-lived intangible assets and lease right-of-use assets) for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When undiscounted future cash flows are not expected to be sufficient to recover an asset's carrying amount, the asset is written down to its fair value based on bids received from third parties or a discounted cash flow analysis based on market participant assumptions. Long-lived assets to be disposed of by sale, if material, are classified as held for sale and reported at the lower of carrying amount or fair value less cost to sell, and depreciation/amortization is ceased. Long-lived assets to be disposed of other than by sale are classified as held and used until they are disposed of and reported at the lower of carrying amount or fair value, and depreciation/amortization is recognized over the remaining useful life of the assets. Intangible Assets Finite-lived intangible assets, such as developed technology and software, are amortized over their estimated useful lives, generally on a straight-line basis for periods ranging primarily from 3 to 20 years. Investments in Related Companies Investments in related companies consist of the Corporation's ownership interests in TDCC subsidiaries located in the United States and Latin America. The Corporation accounts for these investments using the cost method as it does not have significant influence over the operating and financial policies of these related companies. Leases The Corporation determines whether a contract contains a lease at contract inception. A contract contains a lease if there is an identified asset and the Corporation has the right to control the asset. Operating lease right-of-use (“ROU”) assets represent UCC’s right to use an underlying asset for the lease term, and lease liabilities represent UCC’s obligation to make lease payments arising from the lease. Operating lease ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. The Corporation uses the incremental borrowing rate in determining the present value of lease payments, unless the implicit rate is readily determinable. If lease terms include options to extend or terminate the lease, the ROU asset and lease liability are measured based on the reasonably certain decision. Leases with a term of 12 months or less at the commencement date are not recognized on the balance sheet and are expensed as incurred. The Corporation has lease agreements with lease and non-lease components, which are accounted for as a single lease component for nearly all classes of leased assets for which UCC is the lessee. Additionally, for certain equipment leases, the portfolio approach is applied to account for the operating lease ROU assets and lease liabilities. In the consolidated statements of income, lease expense for operating lease payments is recognized on a straight-line basis over the lease term. For finance leases, interest expense is recognized on the lease liability and the ROU asset is amortized over the lease term. Some leasing arrangements require variable payments that are dependent upon usage or output, or may vary for other reasons, such as insurance or tax payments. Variable lease payments are recognized as incurred and are not presented as part of the ROU asset or lease liability. See Note 13 for additional information. Revenue Substantially all of the Corporation's revenues are generated by sales to TDCC. Revenue for product sales to related companies is recognized when the related company obtains control of the product, which occurs either at the time that production is complete or shipped free on board ("FOB") from UCC's manufacturing facility, in accordance with the sales agreement between the Corporation and TDCC. The Corporation recognizes revenue for product sales to trade customers when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Corporation expects to receive in exchange for those goods or services. To determine revenue recognition, the Corporation performs the following five steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. See Note 3 for additional information. Severance Costs Management routinely reviews its operations around the world in an effort to ensure competitiveness across its operations and geographic regions. When the reviews result in a workforce reduction related to the shutdown of facilities or other optimization activities, severance benefits are provided to employees primarily under ongoing benefit arrangements. These severance costs are accrued once management commits to a plan of termination and it becomes probable that employees will be entitled to benefits at amounts that can be reasonably estimated. Income Taxes The Corporation accounts for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences of temporary differences between the carrying amounts and tax bases of assets and liabilities using enacted tax rates. The effect of a change in tax rates on deferred tax assets or liabilities is recognized in income in the period that includes the enactment date. The Corporation is included in the same consolidated federal income tax group and consolidated income tax return as TDCC. The Corporation accounts for its income taxes following the formula in the TDCC-UCC Tax Sharing Agreement used to compute the amount due to TDCC or UCC for UCC's share of taxable income and tax attributes on the consolidated income tax return. This method generally follows the separate return method. The amounts reported as income taxes payable or receivable represent the Corporation's payment obligation (or refundable amount) to TDCC based on a theoretical tax liability calculated on a separate return method. The Corporation recognizes the financial statement effects of an uncertain income tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. The Corporation accrues for non-income tax contingencies when it is probable that a liability to a taxing authority has been incurred and the amount of the contingency can be reasonably estimated. Provision is made for taxes on undistributed earnings of foreign subsidiaries and related companies to the extent that such earnings are not deemed to be permanently invested.

RECENT ACCOUNTING GUIDANCE (Not

RECENT ACCOUNTING GUIDANCE (Notes)	12 Months Ended
	Dec. 31, 2024
Accounting Standards Update and Change in Accounting Principle [Abstract]
Accounting Standards Update and Change in Accounting Principle	RECENT ACCOUNTING GUIDANCE Recently Adopted Accounting Guidance In the fourth quarter of 2024, the Corporation adopted the annual and interim disclosure requirements of Accounting Standards Update ("ASU") 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures." The amendments expand a public business entity's segment disclosures by requiring disclosure of significant segment expenses that are regularly provided to the CODM, clarifying when an entity may report one or more additional measures to assess segment performance, requiring enhanced interim disclosures, providing new disclosure requirements for entities with a single reportable segment, and requiring other new disclosures. See Note 18 for applicable reportable segment disclosures required by this guidance. Accounting Guidance Issued But Not Adopted at December 31, 2024 In December 2023, the Financial Accounting Standards Board ("FASB") issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures," which is intended to enhance the transparency, decision usefulness and effectiveness of income tax disclosures. The amendments in this ASU require a public business entity to disclose a tabular tax rate reconciliation, using both percentages and currency, with specific categories. A public business entity is also required to provide a qualitative description of the states and local jurisdictions that make up the majority of the effect of the state and local income tax category and the net amount of income taxes paid, disaggregated by federal, state and foreign taxes and also disaggregated by individual jurisdictions. The amendments also remove certain disclosures that are no longer considered cost beneficial. The amendments are effective prospectively for annual periods beginning after December 15, 2024, and early adoption and retrospective application are permitted. The adoption of the ASU is not expected to have a material impact on the Corporation's consolidated financial statements. In November 2024, the FASB issued ASU 2024-03, "Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses," which is intended to improve disclosures about a public business entity's expenses and address requests from investors for more detailed information about the types of expenses in commonly presented expense captions. Such information should allow investors to better understand an entity's performance, assess future cash flows, and compare performance over time and with other entities. The amendments will require public business entities to disclose in the notes to the financial statements, at each interim and annual reporting period, specific information about certain costs and expenses, including purchases of inventory, employee compensation, depreciation, and intangible asset amortization included in each expense caption presented on the face of the income statement, and the total amount of an entity's selling expenses. The amendments are effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, and may be applied either prospectively or retrospectively. Early adoption is permitted. The Corporation is currently evaluating the impact of adopting this guidance on the consolidated financial statements. SEC Final Rules Not Adopted at December 31, 2024 In March 2024, the U.S. Securities and Exchange Commission ("SEC") adopted final rules under SEC Release Nos. 33-11275 and 34-99678, "The Enhancement and Standardization of Climate-Related Disclosures for Investors," which requires registrants to disclose certain climate-related information in registration statements and annual reports. The final rules include requirements to disclose material climate-related risks; activities to mitigate or adapt to such risks; information about the board of directors' oversight of climate-related risks and management’s role in managing material climate-related risks; and information on any climate-related targets or goals that are material to the registrant's business, results of operations, or financial condition. Registrants are also required to disclose the financial statement effects of severe weather events and other natural conditions in the notes to the financial statements. Certain large registrants are also required to disclose Scope 1 and Scope 2 greenhouse gas emissions, when material. As a non-accelerated filer, the Corporation is not required to disclose such greenhouse gas emissions information. The final rules include a phased-in compliance period for all registrants, with most disclosures required for the Corporation for the year ending December 31, 2027. In April 2024, the SEC issued an order to stay the final rules until various legal challenges are resolved by the U.S. Court of Appeals for the Eighth Circuit. The Corporation is currently evaluating the impact of the final rules on its consolidated financial statements and annual disclosures.

REVENUE (Notes)

REVENUE (Notes)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue	REVENUE Substantially all of the Corporation's revenue is generated by sales of products, primarily to TDCC. Products are sold to and purchased from TDCC at prices determined in accordance with the terms of an agreement between UCC and TDCC. The Corporation sells its products to TDCC to simplify the customer interface process. Substantially all product sale contracts are short-term in nature and have original expected durations of one year or less. Revenue from product sales is recognized when TDCC or the trade customer obtains control of the Corporation’s product, which occurs at a point in time, typically at the time production is complete or product is shipped FOB from UCC’s manufacturing facility for sales to TDCC, or upon shipment for sales to trade customers. The Corporation’s payment terms are on average 30 to 60 days after invoicing. All shipping and handling activities that occur after control transfers to the customer are considered fulfillment activities. Certain long-term contracts include a series of distinct goods that are delivered continuously to the customer through a pipeline. For these types of product sales, the Corporation invoices the customer in an amount that directly corresponds with the value to the customer of the Corporation’s performance to date. As a result, revenue is recognized based on the amount billable to the customer in accordance with the right to invoice practical expedient. The transaction price for product sales includes estimates for the most likely amount of consideration to which the Corporation will be entitled based on historical award experience and the Corporation’s best judgment at the time. Taxes collected and remitted to governmental authorities are excluded from the transaction price. For contracts with multiple performance obligations, the Corporation allocates the transaction price to each performance obligation on the basis of relative standalone selling price, which is based on the price charged to customers or estimated using the expected cost plus margin method. Revenue related to the initial licensing of patents and technology is recognized when the performance obligation is satisfied. Revenue related to sales-based royalties to which the Corporation expects to be entitled is estimated based on historical sales. The Corporation’s contract liabilities include payments received in advance of performance under long-term contracts for product sales and royalties with remaining contract terms that range up to 16 years. Amounts are recognized in revenue when the performance obligations for the contract are met. The Corporation has rights to additional consideration when product is delivered to the customer. The balance of contract liabilities was $29 million at December 31, 2024 ($31 million at December 31, 2023), of which $2 million ($2 million at December 31, 2023) was included in "Accrued and other current liabilities" and $27 million ($29 million at December 31, 2023) was included in "Other noncurrent obligations" in the consolidated balance sheets. The Corporation disaggregates its revenue from contracts with customers by type of customer (sales to related parties and sales to trade customers) as presented on the consolidated statements of income and believes this disaggregation best depicts the nature, amount, timing and uncertainty of its revenue and cash flows. Substantially all of the product sales are made to the Corporation's parent company, TDCC, and there are no unique economic factors that affect revenue recognition and cash flows associated with these product sales.

RESTRUCTURING AND ASSET RELATED

RESTRUCTURING AND ASSET RELATED CHARGES - NET (Notes)	12 Months Ended
	Dec. 31, 2024
Restructuring and Related Activities [Abstract]
Restructuring and Asset Related Charges - Net	RESTRUCTURING AND ASSET RELATED CHARGES - NET 2023 Restructuring Program In the first quarter of 2023, the Corporation initiated restructuring actions to achieve its structural cost improvement initiatives in response to the continued economic impact from the global recessionary environment and to enhance its agility and long-term competitiveness across the economic cycle. The program includes workforce cost reductions and actions to rationalize the Corporation's manufacturing assets, which includes asset write-down and write-off charges. These actions were substantially complete at the end of 2024. As a result of these actions, the Corporation recorded pretax restructuring charges of $14 million, included in "Restructuring and asset related charges - net" in the consolidated statements of income. The charges consisted of severance and related benefit costs of $12 million and asset write-downs and write-offs of $2 million. The Corporation paid $11 million for severance and related benefit costs through December 31, 2024. At December 31, 2024, a liability for severance and related benefit costs of $1 million ($2 million at December 31, 2023) was included in "Accrued and other current liabilities" in the consolidated balance sheets.

SUPPLEMENTARY INFORMATION (Note

SUPPLEMENTARY INFORMATION (Notes)	12 Months Ended
	Dec. 31, 2024
Supplementary Information [Abstract]
Supplementary Information	SUPPLEMENTARY INFORMATION Sundry Income (Expense) - Net In millions 2024 2023 2022 General administrative and overhead type services and service fees 1 $ (69) $ (72) $ (65) Net commission expense - related company 1 (20) (19) (19) Non-operating pension and other postretirement benefit plan net credits (costs) 2 (22) (144) 34 Gain on sale of ownership interest in related party 3 2 206 — Net gain on sales of property 1 1 3 Equity in earnings of nonconsolidated affiliate 1 — 10 — Other - net (2) (7) (6) Total sundry income (expense) - net $ (110) $ (25) $ (53) 1. See Note 17 for additional information. 2. The 2023 expense includes pretax pension settlement charges of $ 149 million 3. These amounts relate to the sale of the Corporation's ownership interest in Dow Technology Investments LLC. See Note 17 for additional information. Supplier Finance Program The Corporation is a party to a supply chain financing (“SCF”) program, facilitated by TDCC, which can be used in the ordinary course of business to extend payment terms with the Corporation's vendors. Under the terms of this program, a vendor can voluntarily enter into an agreement with a participating financial intermediary to sell its receivables due from the Corporation. The vendor receives payment from the financial intermediary, and the Corporation pays the financial intermediary on the terms originally negotiated with the vendor, which generally range from 90 to 120 days. The vendor negotiates the terms of the agreements directly with the financial intermediary and the Corporation is not a party to that agreement. The financial intermediary may allow the participating vendor to utilize TDCC's creditworthiness in establishing credit spreads and associated costs, which may provide the vendor with more favorable terms than they would be able to secure on their own. Neither TDCC nor the Corporation provide guarantees related to the SCF program. At December 31, 2024, the Corporation's outstanding obligations confirmed as valid under the SCF program were $ 36 million 27 million The following table summarizes the activity of the SCF program for the years ended December 31, 2024 and 2023: Supplier Finance Program Activity In millions 2024 2023 Confirmed obligations outstanding at Jan 1 $ 27 $ 29 Invoices confirmed to financial intermediary 117 102 Confirmed invoices paid to financial intermediary (108) (104) Confirmed obligations outstanding at Dec 31 $ 36 $ 27 Supplemental Cash Flow Information The following table shows cash paid (refunded) for interest and income taxes for the years ended December 31, 2024, 2023 and 2022: Supplemental Cash Flow Information 2024 2023 2022 In millions Cash paid (refunded) during year for: Interest $ 21 $ 26 $ 31 Income taxes 1 $ (211) $ 102 $ 63 Noncash investing activities: Capitalized interest - related company term loan 1 $ 99 $ — $ — 1. See Note 17 for additional information.

INCOME TAXES (Notes)

INCOME TAXES (Notes)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Geographic Allocation of Income and Provision for Income Taxes In millions 2024 2023 2022 Income (loss) before income taxes Domestic $ 297 $ 455 $ 767 Foreign — (1) (1) Income before income taxes $ 297 $ 454 $ 766 Current tax expense (benefit) Federal $ 45 $ 96 $ 157 State and local (3) (6) 9 Foreign 1 1 1 Total current tax expense $ 43 $ 91 $ 167 Deferred tax expense (benefit) Federal $ 7 $ (19) $ (2) State and local (3) 1 3 Foreign — — 4 Total deferred tax expense (benefit) $ 4 $ (18) $ 5 Provision for income taxes $ 47 $ 73 $ 172 Net income $ 250 $ 381 $ 594 Reconciliation to U.S. Statutory Rate 2024 2023 2022 Statutory U.S. federal income tax rate 21.0 % 21.0 % 21.0 % Unrecognized tax benefits and related interest (1.1) (2.7) (0.7) Federal tax accrual adjustments (2.1) — — State and local tax impact (2.1) (1.2) 1.7 Other - net 0.1 (1.0) 0.5 Effective Tax Rate 15.8 % 16.1 % 22.5 % Deferred Tax Balances at Dec 31 2024 2023 In millions Assets Liabilities Assets Liabilities Property $ — $ 109 $ — $ 123 Tax loss and credit carryforwards 13 — 11 — Postretirement benefit obligations 95 — 92 — Other accruals and reserves 251 — 270 — Inventory 1 — 2 — Other - net 12 — 16 — Subtotal $ 372 $ 109 $ 391 $ 123 Valuation allowances 1 (10) — (11) — Total $ 362 $ 109 $ 380 $ 123 1. Primarily related to the realization of recorded tax benefits on state tax loss carryforwards from operations in the United States. Operating Loss and Tax Credit Carryforwards at Dec 31 2024 2023 In millions Assets Assets Operating loss carryforwards Expire within 5 years $ 4 $ 5 Expire after 5 years or indefinite expiration 4 3 Total operating loss carryforwards $ 8 $ 8 Tax credit carryforwards Expire within 5 years $ 2 $ 2 Expire after 5 years or indefinite expiration 3 1 Total tax credit carryforwards $ 5 $ 3 Total tax loss and tax credit carryforwards $ 13 $ 11 Undistributed earnings of foreign subsidiaries and related companies that are deemed to be permanently invested were zero at December 31, 2024 and December 31, 2023. Accordingly, there are no unrecognized deferred tax liabilities related to such earnings. The Corporation is included in TDCC's consolidated federal income tax group. Current and deferred tax expenses are calculated for the Corporation as a stand-alone group and are allocated to the group from the consolidated totals, consistent with the TDCC-UCC Tax Sharing Agreement. The amounts reported as income taxes payable or receivable represent the Corporation's payment obligation (or refundable amount) to TDCC based on a theoretical tax liability calculated on a separate return method. Under this method, the U.S. Gulf Coast Infrastructure Assets transactions and sale of UCC's ownership interest in Dow Technology Investments LLC, as discussed in Note 17, resulted in the recognition of a $299 million tax payable at December 31, 2024 ($301 million at December 31, 2023), included in “Other noncurrent obligations” in the consolidated balance sheets. The following table provides a reconciliation of the Corporation's unrecognized tax benefits: Total Gross Unrecognized Tax Benefits In millions 2024 2023 2022 Total unrecognized tax benefits at Jan 1 $ 8 $ 8 $ 8 Decreases related to positions taken on items from prior years — — — Increases related to positions taken on items from prior years — — — Total unrecognized tax benefits at Dec 31 $ 8 $ 8 $ 8 Total unrecognized tax benefits that, if recognized, would impact the effective tax rate $ 8 $ 8 $ 8 Total amount of interest and penalties (benefit) recognized in "Provision for income taxes" $ (4) $ (12) $ (10) Total accrual for interest and penalties recognized in the consolidated balance sheets $ 11 $ 11 $ 10 The Corporation is currently under examination in a number of tax jurisdictions, including the U.S. federal and various state jurisdictions. The earliest open tax years are 2004 for state income taxes and 2007 for federal income taxes in the United States.

INVENTORIES (Notes)

INVENTORIES (Notes)	12 Months Ended
	Dec. 31, 2024
Inventory Disclosure [Abstract]
Inventories	INVENTORIES The following table provides a breakdown of inventories: Inventories at Dec 31 In millions 2024 2023 Finished goods $ 238 $ 189 Work in process 44 30 Raw materials 72 60 Supplies 94 87 Total $ 448 $ 366 Adjustment of inventories to the LIFO basis (152) (139) Total inventories $ 296 $ 227 Inve ntories valued on the LIFO basis, principally U.S. chemicals and plastics product inventories, represented 68 percent o

PROPERTY (Notes)

PROPERTY (Notes)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property	PROPERTY The following table provides a breakdown of property: Property at Dec 31 Estimated Useful Lives (Years) In millions 2024 2023 Land and land improvements 0-25 $ 68 $ 68 Buildings 5-50 259 259 Machinery and equipment 3-20 4,875 4,799 Other property 3-30 112 111 Construction in progress — 418 169 Total property $ 5,732 $ 5,406 The following table provides information regarding depreciation expense and capitalized interest: In millions 2024 2023 2022 Depreciation expense $ 117 $ 146 $ 165 Capitalized interest $ 13 $ 8 $ 5

INVESTMENTS IN RELATED COMPANIE

INVESTMENTS IN RELATED COMPANIES (Notes)	12 Months Ended
	Dec. 31, 2024
Investments in Related Companies [Abstract]
Investments in and Advances to Affiliates, Schedule of Investments	INVESTMENTS IN RELATED COMPANIES The Corporation's ownership interests in related companies at December 31, 2024 and 2023 were as follows: Investments in Related Companies at Dec 31 Ownership Interest Investment Balance In millions 2024 2023 2024 2023 Dow International Holdings Company 5 % 5 % $ 232 $ 232 Dow Quimica Mexicana S.A. de C.V. 14 % 14 % 5 5 Total investments in related companies $ 237 $ 237

INTANGIBLE ASSETS (Notes)

INTANGIBLE ASSETS (Notes)	12 Months Ended
	Dec. 31, 2024
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible Assets	INTANGIBLE ASSETS The following table provides information regarding the Corporation's intangible assets: Intangible Assets at Dec 31 2024 2023 In millions Gross Carrying Amount Accum Amort Net Gross Carrying Amount Accum Amort Net Intangible assets with finite lives: Developed technology $ 33 $ (33) $ — $ 33 $ (33) $ — Software 68 (62) 6 67 (60) 7 Total intangible assets $ 101 $ (95) $ 6 $ 100 $ (93) $ 7 The following table provides information regarding amortization expense: Amortization Expense In millions 2024 2023 2022 Software, included in "Cost of sales" $ 2 $ 3 $ 5 Total estimated amortization expense for the next five fiscal years, including amounts expected to be capitalized, is as follows: Estimated Amortization Expense for Next Five Years In millions 2025 $ 2 2026 $ 2 2027 $ 1 2028 $ 1 2029 $ 1

NOTES PAYABLE AND LONG-TERM DEB

NOTES PAYABLE AND LONG-TERM DEBT (Notes)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Notes Payable and Long-term Debt	NOTES PAYABLE AND LONG-TERM DEBT Notes Payable at Dec 31 In millions 2024 2023 Notes payable to related companies $ 19 $ 68 Notes payable - other — 1 Total notes payable $ 19 $ 69 Year-end average interest rates 3.15 % 1.06 % Long-Term Debt at Dec 31 2024 Average Rate 2024 2023 Average Rate 2023 In millions Promissory notes and debentures: Debentures due 2025 6.79 % $ 12 6.79 % $ 12 Debentures due 2025 7.50 % 113 7.50 % 113 Debentures due 2096 7.75 % 135 7.75 % 135 Finance lease obligations 1 11 3 Unamortized debt discount and issuance costs (2) (3) Long-term debt due within one year (126) (1) Total long-term debt $ 143 $ 259 1. See Note 13 for additional information. Maturities of Long-Term Debt for Next Five Years at Dec 31, 2024 In millions 2025 $ 126 2026 $ 1 2027 $ 1 2028 $ 1 2029 $ 1 2023 Activity In 2023, the Corporation repaid $129 million of long-term debt at maturity. Letters of Credit The Corporation utilizes letters of credit to support commitments made in the ordinary course of business. While the terms and amounts of letters of credit change, UCC has approximately $5 million of o utstanding letters of credit at any given time. Debt Covenants and Default Provisions

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Notes)	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	COMMITMENTS AND CONTINGENCIES Environmental Matters Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, based on current law and existing technologies. At December 31, 2024, the Corporation had accrued obligations of $ 184 million 194 million The following table summarizes the activity in the Corporation's accrued obligations for environmental matters for the years ended December 31, 2024 and 2023: Accrued Liability for Environmental Matters In millions 2024 2023 Balance at Jan 1 $ 194 $ 183 Accrual adjustment 37 49 Payments against reserve (47) (37) Foreign currency impact — (1) Balance at Dec 31 $ 184 $ 194 The amounts charged to income on a pretax basis related to environmental remediation totaled $ 37 million 44 million 72 million Litigation Asbestos-Related Matters Introduction The Corporation is and has been involved in a large number of asbestos-related suits filed primarily in state courts during the past several decades. These suits principally allege personal injury resulting from exposure to asbestos-containing products and frequently seek both actual and punitive damages. The alleged claims primarily relate to products that UCC sold in the past, alleged exposure to asbestos-containing products located on UCC’s premises and UCC’s responsibility for asbestos suits filed against a former UCC subsidiary, Amchem Products, Inc. ("Amchem"). In many cases, plaintiffs are unable to demonstrate that they have suffered any compensable loss as a result of such exposure, or that injuries incurred in fact resulted from exposure to the Corporation’s products. The Corporation expects more asbestos-related suits to be filed against UCC and Amchem in the future, and will aggressively defend or reasonably resolve, as appropriate, both pending and future claims. Estimating the Asbestos-Related Liability The Corporation has engaged Ankura Consulting Group, LLC ("Ankura") to perform periodic studies to estimate the undiscounted cost of disposing of pending and future claims against UCC and Amchem through the terminal year of 2049, including a reasonable forecast of future defense and processing costs. Each October, the Corporation requests Ankura to review its historical asbestos claim and resolution activity through the third quarter of the current year, including asbestos-related defense and processing costs, to determine the appropriateness of updating the most recent study. At each balance sheet date, the Corporation also compares current asbestos claim and resolution activity, including asbestos-related defense and processing costs, to the results of the most recent Ankura study to determine whether the accrual continues to be appropriate. In December 2022, Ankura completed a study of the Corporation's historical asbestos claim and resolution activity through September 30, 2022, including asbestos-related defense and processing costs, and provided estimates for the undiscounted cost of disposing of pending and future claims against UCC and Amchem through the terminal year of 2049. Based on the study and the Corporation's internal review process, it was determined that no adjustment to the accrual was required. In December 2023, Ankura stated that an update of its December 2022 study would not provide a more likely estimate of future events than the estimate reflected in that study and, therefore, the estimate in that study remained applicable. Based on the Corporation's internal review process and Ankura's response, the Corporation determined that no adjustment to the accrual was required. At December 31, 2023, the asbestos-related liability for pending and future claims against UCC and Amchem, including future asbestos-related defense and processing costs, was $867 million, and approximately 25 percent of the recorded liability related to pending claims and approximately 75 percent related to future claims. In December 2024, Ankura completed a study of the Corporation's historical asbestos claim and resolution activity through September 30, 2024, including asbestos-related defense and processing costs, and provided estimates for the undiscounted cost of disposing of pending and future claims against UCC and Amchem through the terminal year of 2049. Based on the study and the Corporation's internal review process, it was determined that no adjustment to the accrual was required. At December 31, 2024, the asbestos-related liability for pending and future claims against UCC and Amchem, including future asbestos-related defense and processing costs, was $791 million and approximately 23 percent of the recorded liability related to pending claims and approximately 77 percent related to future claims. Summary The Corporation's management believes the amounts recorded for the asbestos-related liability, including defense and processing costs, reflect reasonable and probable estimates of the liability based on current, known facts. However, future events, such as the number of new claims to be filed and/or received each year, the average cost of defending and disposing of each such claim, as well as the numerous uncertainties surrounding asbestos litigation in the United States over a significant period of time, could cause the actual costs for the Corporation to be higher or lower than those projected or those recorded. Any such event could result in an increase or decrease in the recorded liability. Because of the uncertainties described above, the Corporation cannot estimate the full range of the cost of resolving pending and future asbestos-related claims facing UCC and Amchem. As a result, it is reasonably possible that an additional cost of disposing of asbestos-related claims, including future defense and processing costs, could have a material impact on the Corporation's results of operations and cash flows for a particular period and on the consolidated financial position. Other Litigation The Corporation is also involved in a number of legal proceedings and claims with both private and governmental parties. These cover a wide range of matters, including, but not limited to: product liability; trade regulation; governmental tax and regulatory disputes; health, safety and environmental matters; employment matters; patent infringement; contracts; and commercial litigation. While it is not possible at this time to determine with certainty the ultimate outcome of any of the legal proceedings and claims referred to in this filing, management believes that the possibility is remote that the aggregate of all such other claims and lawsuits will have a material adverse impact on the results of operations, cash flows and financial position of the Corporation. Purchase Commitments The Corporation has outstanding purchase commitments and various commitments for take-or-pay or throughput agreements. The Corporation was not aware of any purchase commitments that were negotiated as part of a financing arrangement for the facilities that will provide the contracted goods or services or for the costs related to those goods or services at December 31, 2024 and 2023.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE LOSS (Notes)	12 Months Ended
	Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	ACCUMULATED OTHER COMPREHENSIVE LOSS The changes in each component of AOCL for the years ended December 31, 2024, 2023 and 2022 were as follows: Accumulated Other Comprehensive Loss 2024 2023 2022 In millions Cumulative Translation Adjustment Beginning balance $ (53) $ (54) $ (53) Unrealized gains (losses) on foreign currency translation 1 1 — (Gains) losses reclassified from AOCL to net income 1 — — (1) Other comprehensive income (loss), net of tax 1 1 (1) Ending balance $ (52) $ (53) $ (54) Pension and Other Postretirement Benefits Beginning balance $ (1,290) $ (1,348) $ (1,498) Gains (losses) arising during the period (57) (116) 96 Tax (expense) benefit 13 25 (22) Net gains (losses) arising during the period (44) (91) 74 Amortization of net loss and prior service credit reclassified from AOCL to net income 2 55 194 98 Tax expense (benefit) 3 (13) (45) (22) Net loss and prior service credit reclassified from AOCL to net income 42 149 76 Other comprehensive income (loss), net of tax (2) 58 150 Ending balance $ (1,292) $ (1,290) $ (1,348) Total AOCL ending balance $ (1,344) $ (1,343) $ (1,402) 1. Reclassified to "Sundry income (expense) - net." 2. These AOCL components are included in the computation of net periodic benefit cost (credit) of the Corporation's defined benefit pension and other postretirement benefit plans. See Note 15 for additional information. 3. Reclassified to "Provision for income taxes."

PENSION PLANS AND OTHER POSTRET

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Notes)	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS	PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS Pension Plans The Corporation has both funded and unfunded defined benefit plans in the United States, which covered substantially all U.S. employees through December 31, 2023. In 2021, TDCC announced changes to the design of its U.S. tax-qualified and non-qualified pension plans, including the plans of the Corporation (the “UCC Plans”). As a result, effective December 31, 2023, the Corporation froze the pensionable compensation and credited service amounts used to calculate pension benefits for substantially all employees who participated in the UCC Plans, except for certain employees subject to collective bargaining agreements. In 2024, the Corporation froze pension benefits for substantially all remaining employees who participated in the UCC Plans. Separately, in the fourth quarter of 2023, certain of the Corporation’s tax-qualified pension plans purchased a nonparticipating group annuity contract from an insurance company, irrevocably transferring approximately $230 million of benefit obligations and $210 million of related plan assets to the insurers. This transaction did not require any cash funding from the Corporation and did not impact the pension benefits of participants. As a result of this transaction, the Corporation recognized a non-cash pretax settlement charge of $ 149 million The Corporation's funding policy is to contribute to plans when pension laws or economics either require or encourage funding. In 2024, UCC contributed $2 million to its pension plans, including contributions to fund benefit payments for its non-qualified supplemental plan. UCC expects to contribute approximately $3 million to its pension plans in 2025. The weighted-average assumptions used to determine pension plan obligations and net periodic benefit cost are provided below: Pension Plan Assumptions Benefit Obligations Net Periodic Benefit Cost 2024 2023 2024 2023 2022 Discount rate 5.67 % 5.25 % 5.25 % 5.72 % 2.94 % Interest crediting rate for applicable benefits 3.47 % 4.50 % 4.50 % 4.50 % 4.50 % Rate of compensation increase 1 — % 4.25 % 4.25 % 4.25 % 4.25 % Expected return on plan assets 6.40 % 6.80 % 6.80 % 1. The rate of compensation increase assumption is not relevant at December 31, 2024, due to the freezing of plan benefits. Other Postretirement Benefit Plans The Corporation provides certain health care and life insurance benefits to retired U.S. employees and survivors. The plan provides health care benefits, including hospital, physicians' services, drug and major medical expense coverage and life insurance benefits. The Corporation and the retiree share the cost of these benefits, with the Corporation portion increasing as the retiree has increased years of credited service, although there is a cap on the Corporation portion. The Corporation has the ability to change these benefits at any time. Employees hired after January 1, 2008, are not covered under this plan. The Corporation funds most of the cost of these health care and life insurance benefits as incurred. In 2024, UCC did not make any contributions to its other postretirement benefit plan trust. Likewise, UCC does not expect to contribute assets to its other postretirement benefit plan trust in 2025. The weighted-average assumptions used to determine other postretirement benefit plan obligations and net periodic benefit cost for the plan are provided in the following table: Other Postretirement Benefit Plan Assumptions Benefit Obligations at Dec 31 Net Periodic Benefit Cost for the Year Ended 2024 2023 2024 2023 2022 Discount rate 5.64 % 5.20 % 5.20 % 5.56 % 2.84 % Health care cost trend rate assumed for next year 7.00 % 6.50 % 6.50 % 6.57 % 6.50 % Rate to which the cost trend rate is assumed to decline (the ultimate health care cost trend rate) 5.00 % 5.00 % 5.00 % 5.00 % 5.00 % Year that the rate reaches the ultimate health care cost trend rate 2033 2033 2033 2033 2028 Assumptions The Corporation determines the expected long-term rate of return on plan assets by performing a detailed analysis of key economic and market factors driving historical returns for each asset class and formulating a projected return based on factors in the current environment. Factors considered include, but are not limited to, inflation, real economic growth, interest rate yield, interest rate spreads, and other valuation measures and market metrics. The expected long-term rate of return for each asset class is then weighted based on the strategic asset allocation approved by the governing body for each plan. The Corporation's historical experience with the pension fund asset performance is also considered. The Corporation uses the spot rate approach to determine the discount rate utilized to measure the service cost and interest cost components of net periodic pension and other postretirement benefit costs. Under the spot rate approach, the Corporation calculates service cost and interest cost by applying individual spot rates from the Willis Towers Watson U.S. RATE:Link 60-90 corporate yield curve (based on 60th to 90th percentile high-quality corporate bond yields) to the separate expected cash flow components of service cost and interest cost. The discount rates utilized to measure the pension and other postretirement obligations of the plans were based on the yield on high-quality corporate fixed income investments at the measurement date. Future expected actuarially determined cash flows for the plans are individually discounted at the spot rates under the Willis Towers Watson U.S. RATE:Link 60-90 corporate yield curve (based on 60th to 90th percentile high-quality corporate bond yields) to arrive at the plan’s obligations as of the measurement date. The Corporation's mortality assumption used for the U.S. plans is a benefit-weighted version of the Society of Actuaries' RP-2014 base table with future rates of mortality improvement based on a modified version of the assumptions used in the Social Security Administration's 2021 trustees report. Summarized information on the Corporation's pension and other postretirement benefit plans is as follows: Change in Projected Benefit Obligations, Plan Assets and Funded Status for All Plans Defined Benefit Other Postretirement Benefit Plan In millions 2024 2023 2024 2023 Change in projected benefit obligations: Benefit obligations at beginning of year $ 2,633 $ 2,860 $ 133 $ 128 Service cost — 32 — — Interest cost 129 147 7 7 Actuarial changes in assumptions and experience (85) 55 (14) 6 Benefits paid (209) (246) (7) (8) Settlement 1 — (211) — — Other — (4) 1 — Benefit obligations at end of year $ 2,468 $ 2,633 $ 120 $ 133 Change in plan assets: Fair value of plan assets at beginning of year $ 2,370 $ 2,679 $ — $ — Actual return on plan assets 10 146 — — Employer contributions 2 2 — — Asset transfers — (5) — — Benefits paid (209) (246) — — Settlement 2 — (211) — — Other 4 5 — — Fair value of plan assets at end of year $ 2,177 $ 2,370 $ — $ — Funded status at end of year $ (291) $ (263) $ (120) $ (133) Net amounts recognized in the consolidated balance sheets at Dec 31: Deferred charges and other assets $ — $ 10 $ — $ — Accrued and other current liabilities (1) (2) (11) (12) Pension and other postretirement benefits - noncurrent (290) (271) (109) (121) Net amount recognized $ (291) $ (263) $ (120) $ (133) Pretax amounts recognized in accumulated other comprehensive loss at Dec 31: Net loss (gain) $ 1,756 $ 1,752 $ (104) $ (102) 1. The 2023 impact primarily relates to the transfer of certain pension benefit obligations through the purchase of annuity contracts from an insurance company, triggering settlement accounting. 2. The 2023 impact primarily relates to the purchase of an annuity contract associated with the transfer of certain pension benefit obligations to an insurance company, triggering settlement accounting. A significant component of the overall decrease in the Corporation's benefit obligation for the year ended December 31, 2024, was due to benefits paid and the change in weighted-average discount rates, which increased from 5.25 percent at December 31, 2023, to 5.67 percent at December 31, 2024. A significant component of the overall decrease in the Corporation's benefit obligation for the year ended December 31, 2023 was due to the irrevocable transfer of certain benefit obligations to a third-party insurance company, partially offset by the change in weighted-average discount rates, which decreased from 5.60 percent at December 31, 2022, to 5.25 percent at December 31, 2023. The accumulated benefit obligation for all defined benefit pension plans was $2.5 billion at December 31, 2024, and $2.6 billion at December 31, 2023. Pension Plans with Accumulated Benefit Obligations or Pension Benefit Obligations in Excess of Plan Assets at Dec 31 In millions 2024 2023 Accumulated benefit obligations / Pension benefit obligations 1 $ 2,468 $ 2,593 Fair value of plan assets $ 2,177 $ 2,320 1. Cumulative accumulated pension obligations in excess of plan assets and cumulative pension benefit obligations in excess of plan assets are the same at December 31, 2024 and 2023. Net Periodic Benefit Cost (Credit) for All Plans for the Year Ended Dec 31 Defined Benefit Pension Plans Other Postretirement Benefit Plan In millions 2024 2023 2022 2024 2023 2022 Net Periodic Benefit Cost (Credit): Service cost $ — $ 32 $ 37 $ — $ — $ 1 Interest cost 129 147 91 7 7 3 Expected return on plan assets (169) (204) (226) — — — Amortization of prior service credit — — (1) — — — Amortization of net (gain) loss 67 60 108 (12) (15) (9) Settlement loss 1 — 149 — — — — Net periodic benefit cost (credit) $ 27 $ 184 $ 9 $ (5) $ (8) $ (5) Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss: Net (gain) loss $ 71 $ 109 $ (47) $ (14) $ 7 $ (49) Amortization of prior service credit — — 1 — — — Amortization of net gain (loss) (67) (60) (108) 12 15 9 Settlement loss 1 — (149) — — — — Total recognized in other comprehensive (income) loss $ 4 $ (100) $ (154) $ (2) $ 22 $ (40) Total recognized in net periodic benefit cost and other comprehensive (income) loss $ 31 $ 84 $ (145) $ (7) $ 14 $ (45) 1. The 2023 impact relates to the settlement of certain pension benefit obligations through the purchase of a nonparticipating group annuity contract from an insurance company. Net periodic benefit cost (credit), other than the service cost component, is included in "Sundry income (expense) - net" in the consolidated statements of income. See Note 5 for additional information. Estimated Future Benefit Payments The estimated future benefit payments, reflecting expected future service, as appropriate, are presented in the following table: Estimated Future Benefit Payments at Dec 31, 2024 Defined Benefit Pension Plans Other Postretirement Benefit Plan In millions 2025 1 $ 290 $ 11 2026 209 11 2027 205 11 2028 202 11 2029 197 11 2030 through 2034 914 48 Total $ 2,017 $ 103 1. Includes benefit payments related to the planned termination of a U.S. tax-qualified pension plan. Plan Assets Plan assets consist primarily of equity and fixed income securities of U.S. and foreign issuers, and include alternative investments, such as real estate, private equity and other absolute return strategies. Plan assets totaled $2.2 billion at December 31, 2024 and $2.4 billion at December 31, 2023 and included no directly held common stock of Dow Inc. The Corporation's investment strategy for plan assets is to manage the assets in relation to the liability in order to pay retirement benefits to plan participants over the life of the plans. This is accomplished by identifying and managing the exposure to various market risks, diversifying investments across various asset classes and earning an acceptable long-term rate of return consistent with an acceptable amount of risk, while considering the liquidity needs of the plan. The plan is permitted to use derivative instruments for investment purposes, as well as for hedging the underlying asset and liability exposures and rebalancing the asset allocation. The plan uses value-at-risk, stress testing, scenario analysis and Monte Carlo simulation to monitor and manage both the risk within the portfolios and the surplus risk of the plan. Equity securities primarily include investments in large- and small-cap companies located in both developed and emerging markets around the world. Fixed income securities are primarily U.S. dollar based and include U.S. treasuries and investment grade corporate bonds of companies diversified across industries. Alternative investments primarily include investments in real estate, private equity and absolute return strategies. Other significant investment types include various insurance contracts and interest rate, equity, commodity and foreign exchange derivative investments and hedges. The Corporation mitigates the credit risk of investments by establishing guidelines with investment managers that limit investment in any single issue or issuer to an amount that is not material to the portfolio being managed. These guidelines are monitored for compliance both by the Corporation and the external managers. Credit risk related to derivative activity is mitigated by utilizing multiple counterparties, collateral support agreements, and centralized clearing where appropriate. A short-term investment money market fund is utilized as the sweep vehicle for the pension plan, which from time to time can represent a significant investment. The weighted-average target allocation for plan assets of the Corporation's pension plan is summarized as follows: Target Allocation for Plan Assets at Dec 31, 2024 Target Allocation Asset Category Equity securities 23 % Fixed income securities 45 Alternative investments 27 Other 5 Total 100 % Fair value calculations may not be indicative of net realizable value or reflective of future fair values. Furthermore, although the Corporation believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. For pension plan assets classified as Level 1 measurements (measured using quoted prices in active markets), total fair value is either the price of the most recent trade at the time of the market close or the official close price, as defined by the exchange on which the asset is most actively traded on the last trading day of the period, multiplied by the number of units held without consideration of transaction costs. For pension plan assets classified as Level 2 measurements, where the security is frequently traded in less active markets, fair value is based on the closing price at the end of the period; where the security is less frequently traded, fair value is based on the price a dealer would pay for the security or similar securities, adjusted for any terms specific to that asset or liability. Market inputs are obtained from well-established and recognized vendors of market data and subjected to tolerance and quality checks. For derivative assets and liabilities, standard industry models are used to calculate the fair value of the various financial instruments based on significant observable market inputs such as foreign exchange rates, commodity prices, swap rates, interest rates, and implied volatilities obtained from various market sources. For other assets for which observable inputs are used, fair value is derived through the use of fair value models, such as a discounted cash flow model or other standard pricing models. For pension plan assets classified as Level 3 measurements, total fair value is based on significant unobservable inputs including assumptions where there is little, if any, market activity for the investment. Certain pension plan assets are held in funds where fair value is based on an estimated net asset value per share (or its equivalent) as of the most recently available fund financial statements which are received on a monthly or quarterly basis. These valuations are reviewed for reasonableness based on applicable sector, benchmark and company performance. Adjustments to valuations are made where appropriate to arrive at an estimated net asset value per share at the measurement date. These funds are not classified within the fair value hierarchy. The following table summarizes the bases used to measure the Corporation’s pension plan assets at fair value for the years ended December 31, 2024 and 2023: Basis of Fair Value Measurements Dec 31, 2024 Dec 31, 2023 In millions Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 178 $ 157 $ 21 $ — $ 203 $ 188 $ 15 $ — Equity securities: U.S. equity securities $ 153 $ 153 $ — $ — $ 239 $ 238 $ 1 $ — Non - U.S. equity securities 225 213 11 1 250 238 11 1 Total equity securities $ 378 $ 366 $ 11 $ 1 $ 489 $ 476 $ 12 $ 1 Fixed income securities: Debt - government-issued $ 660 $ — $ 660 $ — $ 720 $ — $ 720 $ — Debt - corporate-issued 216 — 216 — 265 1 264 — Debt - asset-backed 34 — 34 — 37 — 37 — Total fixed income securities $ 910 $ — $ 910 $ — $ 1,022 $ 1 $ 1,021 $ — Alternative investments: Derivatives - asset position $ 12 $ — $ 12 $ — $ 7 $ — $ 7 $ — Derivatives - liability position (47) — (47) — (13) — (13) — Total alternative investments $ (35) $ — $ (35) $ — $ (6) $ — $ (6) $ — Other investments $ — $ — $ — $ — $ 1 $ 1 $ — $ — Subtotal $ 1,431 $ 523 $ 907 $ 1 $ 1,709 $ 666 $ 1,042 $ 1 Investments measured at net asset value: Hedge funds $ 140 $ 125 Private markets 460 344 Real estate 155 199 Total investments measured at net asset value $ 755 $ 668 Items to reconcile to fair value of plan assets: Pension trust receivables 1 $ 1 $ 7 Pension trust payables 2 (10) (14) Total $ 2,177 $ 2,370 1. Primarily receivables for investment securities sold. 2. Primarily payables for investment securities purchased. The following table summarizes the changes in fair value of Level 3 pension plan assets for the years ended December 31, 2024 and 2023: Fair Value Measurement of Level 3 Pension Plan Assets Equity Securities Alternative Investments Total In millions Balance at Jan 1, 2023 $ — $ 2 $ 2 Actual return on plan assets: Relating to assets held at Dec 31, 2023 1 (2) (1) Balance at Dec 31, 2023 $ 1 $ — $ 1 Actual return on plan assets: Relating to assets held at Dec 31, 2024 — — — Balance at Dec 31, 2024 $ 1 $ — $ 1 Defined Contribution Plans U.S. employees may participate in defined contribution plans by contributing a portion of their compensation, which is partially matched by the Corporation. In addition, beginning on January 1, 2024, all eligible U.S. employees also received an automatic non-elective contribution of 4 percent of eligible compensation to their respective defined contribution plans. Expense recognized for all defined contribution plans was $21 million in 2024, $12 million in 2023 and $12 million in 2022.

LEASES (Notes)

LEASES (Notes)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Lessee, Operating And Finance Leases	LEASES Operating lease ROU assets are included in "Operating lease right-of-use assets" and finance lease ROU assets are included in "Net property" in the consolidated balance sheets. With respect to lease liabilities, operating lease liabilities are included in "Operating lease liabilities - current" and "Operating lease liabilities - noncurrent," and finance lease liabilities are included in "Long-term debt due within one year" and "Long-Term Debt" in the consolidated balance sheets. The Corporation routinely leases product and utility production facilities, sales and administrative offices, warehouses and tanks for product storage, motor vehicles, railcars, office machines and equipment. Some leases contain renewal provisions, purchase options and escalation clauses. The terms for these leased assets vary depending on the lease agreement. These leased assets have remaining lease terms of up to 21 years. The Corporation's lease agreements do not contain any material residual value guarantees or restrictive covenants. The components of lease cost for operating and finance leases for the years ended December 31, 2024, 2023 and 2022 were as follows: Lease Cost 2024 2023 2022 In millions Operating lease cost $ 18 $ 25 $ 25 Short-term lease cost 57 41 31 Variable lease cost 19 25 19 Amortization of right-of-use assets - finance 2 3 3 Total lease cost $ 96 $ 94 $ 78 The following table provides supplemental cash flow and other information related to leases: Other Lease Information 2024 2023 2022 In millions Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 18 $ 24 $ 25 Financing cash flows for finance leases $ 2 $ 3 $ 3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 2 $ 12 $ 2 Finance leases $ 11 $ 2 $ 1 The following table summarizes the lease-related assets and liabilities recorded in the consolidated balance sheets at December 31, 2024 and 2023: Lease Position Balance Sheet Classification Dec 31, 2024 Dec 31, 2023 In millions Assets Operating lease assets Operating lease right-of-use assets $ 61 $ 85 Finance lease assets Property 25 14 Finance lease amortization Accumulated depreciation (13) (12) Total lease assets $ 73 $ 87 Liabilities Current Operating Operating lease liabilities - current $ 12 $ 17 Finance Long-term debt due within one year 1 1 Noncurrent Operating Operating lease liabilities - noncurrent 49 68 Finance Long-Term Debt 10 2 Total lease liabilities $ 72 $ 88 The weighted-average remaining lease term and discount rate for leases recorded in the consolidated balance sheets at December 31, 2024 and 2023 are provided below: Lease Term and Discount Rate Dec 31, 2024 Dec 31, 2023 Weighted-average remaining lease term Operating leases 6.7 years 6.7 years Finance leases 7.9 years 3.8 years Weighted-average discount rate Operating leases 3.21 % 3.42 % Finance leases 5.49 % 4.38 % The following table provides the maturities of lease liabilities at December 31, 2024: Maturities of Lease Liabilities Dec 31, 2024 In millions Operating Leases Finance Leases 2025 $ 14 $ 2 2026 13 2 2027 12 2 2028 10 2 2029 4 2 2030 and thereafter 16 5 Total future undiscounted lease payments $ 69 $ 15 Less: Imputed interest 8 4 Total present value of lease liabilities $ 61 $ 11 At December 31, 2024, the Corporation had no additional leases for assets that have not yet commenced.

FAIR VALUE MEASUREMENTS (Notes)

FAIR VALUE MEASUREMENTS (Notes)	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS The Corporation's financial instruments are classified as Level 2 measurements. For assets and liabilities classified as Level 2 measurements, where the security is frequently traded in less active markets, fair value is based on the closing price at the end of the period; where the security is less frequently traded, fair value is based on the price a dealer would pay for the security or similar securities, adjusted for any terms specific to that asset or liability, or by using observable market data points of similar, more liquid securities to imply the price. Market inputs are obtained from well-established and recognized vendors of market data and subjected to tolerance and quality checks. Assets that are measured using significant other observable inputs are primarily valued by reference to quoted prices of similar assets in active markets, adjusted for any terms specific to that asset. For all other assets for which observable inputs are used, fair value is derived through the use of fair value models, such as a discounted cash flow model or other standard pricing models. There were no transfers between Levels 1 and 2 in the years ended December 31, 2024 and 2023. The following table summarizes the fair value of the Corporation's financial instruments at December 31, 2024 and 2023: Fair Value of Financial Instruments 2024 2023 In millions Cost Gain Loss Fair Value Cost Gain Loss Fair Value Cash equivalents 1 $ 11 $ — $ — $ 11 $ 10 $ — $ — $ 10 Long-term debt including debt due within one year $ (269) $ — $ (26) $ (295) $ (260) $ — $ (47) $ (307) 1. Money market fund is included in "Cash and cash equivalents" in the consolidated balance sheets and held at amortized cost, which approximates fair value. Cost approximates fair value for all other financial instruments. Fair Value Measurements on a Nonrecurring Basis In 2023, as part of the 2023 Restructuring Program, the Corporation rationalized its manufacturing assets to achieve its structural cost improvement initiatives. The manufacturing assets associated with this plan, classified as Level 3 measurements and valued using unobservable inputs, were written down to zero and the Corporation recorded an impairment charge of $2 million, which was included in "Restructuring and asset related charges - net" in the consolidated statements of income.

RELATED PARTY TRANSACTIONS (Not

RELATED PARTY TRANSACTIONS (Notes)	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	RELATED PARTY TRANSACTIONS U.S. Gulf Coast Infrastructure Assets As part of the Corporation's and TDCC's application of a best-owner mindset when reviewing non-product producing assets and to allow UCC and TDCC to have more visibility into the operations and economics of such assets, on November 1, 2023, UCC and certain other TDCC subsidiaries contributed certain production supporting infrastructure assets on the U.S. Gulf Coast (which are not product-producing assets themselves) to a TDCC subsidiary that will manage the contributed assets ("TDCC Infrastructure Subsidiary") in exchange for a membership interest ("Common Control Membership Interest") in the TDCC Infrastructure Subsidiary. The carrying value of net assets contributed by UCC was $389 million. In connection with this contribution, TDCC and UCC entered into various agreements, designating UCC to receive or provide certain site services as defined under the agreements. Such agreements were designed to ensure the continuation of services to support UCC's existing operations. UCC recognized equity earnings of $10 million in the fourth quarter of 2023 related to this investment, recorded in "Sundry income (expense) - net" in the consolidated statements of income. On December 1, 2023, UCC sold its Common Control Membership Interest to another TDCC subsidiary in exchange for a $1,543 million term loan receivable, recorded in "Noncurrent receivables from related companies" in the consolidated balance sheets. This loan bears interest based on alternative reference rates and matures on December 1, 2043. This transaction was accounted for as a transfer between entities under common control, which resulted in an increase to additional paid in capital of $893 million, net of tax of $251 million, and recorded in "Additional Paid-in Capital" in the consolidated statements of equity. Interest on the term loan is capitalized, resulting in a term loan balance of $1,642 million at December 31, 2024. Sale of Ownership Interest in Dow Technology Investments LLC ("DTIL") In December 2023, the Corporation sold a portion of its 50 percent ownership interest in DTIL, which had no carrying value, to its joint venture partner, Dow Global Technologies LLC ("DGTL"), a TDCC subsidiary, thereby reducing UCC's ownership interest in DTIL to 0.5 percent. As part of this transaction, the Corporation received cash proceeds and recognized a pretax gain of $206 million, recorded in "Sundry income (expense) - net" in the consolidated statements of income. In 2024, the Corporation sold its remaining ownership interest to DGTL for cash proceeds of $2 million and recognized a pretax gain, recorded in "Sundry income (expense) - net" in the consolidated statements of income. The Corporation evaluated the divestment of the infrastructure assets on the U.S. Gulf Coast and the sale of its ownership interest in DTIL and determined they did not represent strategic shifts that had a major effect on the Corporation’s operations and financial results and did not qualify as an individually significant component of the Corporation. As a result, the transactions are not reported as discontinued operations. Product and Services Agreements The Corporation sells its products to TDCC to simplify the customer interface process. Products are sold to and purchased from TDCC at prices determined in accordance with the terms of an agreement between UCC and TDCC. After each quarter, the Corporation and TDCC analyze the pricing used for the sales in that quarter and reach agreement on any necessary adjustments, at which point the prices are final. The Corporation also procures certain commodities, raw materials, pipeline, storage and site services through TDCC and the TDCC Infrastructure Subsidiary and pays commissions and service fees based on the services, volume and type of commodities and raw materials purchased. The Corporation also has a master services agreement with TDCC, whereby TDCC provides services including, but not limited to: accounting; legal; treasury (investments, cash management, risk management, insurance); procurement; human resources; environmental; health and safety; and business management for UCC. Under the master services agreement with TDCC, general administrative and overhead type services that TDCC routinely allocates to various businesses are charged to UCC. The master services agreement cost allocation basis is headcount and includes a 10 percent service fee. The following table summarizes UCC’s transactions with TDCC and a TDCC subsidiary related to product and services agreements for the years ended December 31, 2024, 2023 and 2022: Product and Services Agreements Transactions 2024 2023 2022 Income Statement In millions Classification Activity-based costs 1 $ 599 $ 158 $ 89 Cost of sales Commodity and raw materials purchases 2 $ 996 $ 1,078 $ 1,909 Cost of sales Commission expense $ 20 $ 19 $ 19 Sundry income (expense) - net General administrative and overhead type services and service fee 3 $ 69 $ 72 $ 65 Sundry income (expense) - net 1. As a result of UCC's divestment of its infrastructure assets in the fourth quarter of 2023 ("Infrastructure Divestment"), certain site infrastructure-related costs previously administered independently by the Corporation are now performed by another TDCC subsidiary and billed to the Corporation, resulting in increased related party activity-based costs. The Infrastructure Divestment resulted in certain changes in other cost flows, which further increased activity-based costs. Activity-based costs include short-term lease cost of $16 million related to pipeline and site services for the year ended December 31, 2024, included in Lease Cost in Note 13. 2. Period-end balances on hand are included in inventory. The 2024 decrease in purchase costs was primarily due to changes in cost flows resulting from the Infrastructure Divestment. The 2023 decrease in purchase costs was primarily due to lower feedstock and energy costs on lower production. 3. The increase in services and fees in 2023 was primarily due to changes in cost flows and the cost of site infrastructure services resulting from the Infrastructure Divestment. Management believes the method used for determining expenses charged by TDCC is reasonable. TDCC provides these services by leveraging its centralized functional service centers to provide services at a cost that management believes provides an advantage to the Corporation. The monitoring and execution of risk management policies related to interest rate and foreign currency risks, which are based on TDCC’s risk management philosophy, are provided as a service to UCC. The Corporation experienced an unplanned shutdown of its manufacturing site in Seadrift, Texas, in October 2023, resulting in lost sales and margins in the fourth quarter of 2023. These losses were covered, in part, by an insurance program purchased by TDCC from its insurance affiliate. In the first quarter of 2024, the Corporation recorded insurance recoveries of $22 million from TDCC for covered losses, included in "Cost of sales" in the consolidated statements of income. Tax Sharing Agreement In accordance with the Tax Sharing Agreement between the Corporation and TDCC, the Corporation makes payments to TDCC to cover the Corporation's estimated federal tax liability; payments were $90 million in 2024, $113 million in 2023 and $155 million in 2022. The Corporation recorded decreases of approximately $280 million of its income tax and related interest receivable during 2024 due to tax audit closures. These amounts were reclassified from "Income taxes receivable" and "Noncurrent receivables" in the consolidated balance sheets and settled through the Corporation's cash management process with TDCC and are reflected in "Related company receivables" and "Other assets and liabilities" in the consolidated statements of cash flows. Cash Management As part of TDCC’s cash management process, UCC is a party to a revolving loan with TDCC that allows TDCC to borrow an aggregate outstanding amount not to exceed $2 billion. The agreement, which became effective on December 2, 2024, earns interest based on alternative reference rates and matures annually, with automatic one year extensions unless either party terminates the agreement. This agreement amended and restated a prior revolving loan agreement that was scheduled to mature on December 30, 2024, and earned interest based on alternative reference rates. At December 31, 2024, the Corporation had a note receivable of $593 million ($799 million at December 31, 2023) from TDCC under these agreements. The Corporation may draw from the notes in support of its daily working capital requirements and, as such, the net effect of cash inflows and outflows under the revolving loan agreements is presented in the consolidated statements of cash flows as an operating activity. The Corporation also has a separate revolving credit agreement with TDCC that allows the Corporation to borrow or obtain credit enhancements up to an aggregate of $2 billion. TDCC may demand repayment with a 30-day written notice to the Corporation, subject to certain restrictions. The agreement was effective December 2, 2024, and amended and restated a prior revolving credit agreement that was scheduled to expire on December 30, 2024 and allowed the Corporation to borrow or obtain credit enhancements up to an aggregate of $1 billion. At December 31, 2024, $1,943 million was available under the new revolving credit agreement ($948 million at December 31, 2023 under the previous revolving credit agreement). At December 31, 2023, TDCC also held certain cash collateral balances from UCC related to credit enhancements, which were reported as "Noncurrent receivables from related companies" in the consolidated balance sheets. Dividends On a quarterly basis, the Board reviews and determines if there will be a dividend distribution to its parent company and sole shareholder, TDCC. The Board takes into consideration the level of earnings and cash flows, among other factors, in determining the amount of the dividend distribution. The following table summarizes cash dividends declared and paid to TDCC for the years ended 2024, 2023 and 2022: Cash Dividends Declared and Paid 2024 2023 2022 In millions Cash dividends declared and paid $ 228 $ 512 $ 1,063

BUSINESS AND GEOGRAPHIC AREAS (

BUSINESS AND GEOGRAPHIC AREAS (Notes)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Business and Geographic Regions	BUSINESS AND GEOGRAPHIC REGIONS TDCC conducts its worldwide operations through global businesses and the Corporation's business activities comprise components of TDCC's global businesses rather than stand-alone operations, as the Corporation sells substantially all of its products to TDCC in order to simplify the customer interface process. The Board, acting pursuant to the authority delegated to it by its parent company, TDCC, functions as the Corporation's CODM to assess UCC's results and allocate resources for its operations. The Corporation's results are reported as a single operating segment as the consolidated statements of income are presented to the CODM without further disaggregation. Sales are attributed to geographic regions based on customer location; long-lived assets are attributed to geographic regions based on asset location. Sales to external customers and long-lived assets by geographic region were as follows: Geographic Region Information United States Asia Pacific Rest of World Total In millions 2024 Sales to external customers 1 $ 119 $ 1 $ — $ 120 Long-lived assets $ 1,093 $ 18 $ 10 $ 1,121 2023 Sales to external customers 1 $ 117 $ 30 $ — $ 147 Long-lived assets $ 862 $ 21 $ 11 $ 894 2022 Sales to external customers 1 $ 182 $ 3 $ 6 $ 191 Long-lived assets $ 1,149 $ 22 $ 11 $ 1,182 1. Of total sales to external customers, sales in Malaysia were approximately 1 percent in 2024, 20 percent in 2023 and 1 percent in 2022, and are included in Asia Pacific.

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Risk Management and Strategy Dow has processes in place to identify, assess and monitor material risks from cybersecurity threats, including the material risks of the Corporation. These processes are part of Dow’s overall enterprise risk management process and have been embedded in Dow’s operating procedures, internal controls and information systems. Dow's comprehensive cybersecurity and information security framework includes risk assessment and mitigation through a threat intelligence-driven approach, application controls, and enhanced security with ransomware defense. The framework leverages International Organization for Standardizations 27001/27002 standards for general information technology controls, International Society of Automation/International Electrotechnical Commission standards for industrial automation, the National Institute of Standards and Technology Cyber Security Framework ("NIST CSF") for measuring overall readiness to respond to cyber threats, and Sarbanes-Oxley for assessment of internal controls. In addition, Dow maintains business continuity and disaster recovery plans as well as a cybersecurity insurance policy. Dow has comprehensive processes to manage cybersecurity risks when engaging with third-party service providers, including reviewing questionnaires and independent quantitative scores of the vendor’s cyber hygiene, maintaining robust controls to address and mitigate significant risks that may arise, and performing ongoing assessments and reviews throughout the duration of the engagement. Dow has established cybersecurity and information security awareness training programs. Formal training on topics relating to Dow’s cybersecurity, data privacy and information security policies and procedures is mandatory at least annually for all employees, contractors and third parties with access to Dow’s network. Training is administered and tracked through online learning modules. Training topics include how to escalate suspicious activities including phishing, viruses, spams, insider threats, suspect human behaviors or safety issues. Based on role and location, some employees receive additional in-depth training to provide more comprehensive knowledge on potential risks related to their individual job responsibilities. Training is supplemented through regular Dow company-wide communications with frequent updates to educate on the latest adversary trends and social engineering techniques. Additionally, Dow engages in cyber crisis response simulations to assess Dow’s ability to adapt to information and operational technology threats. Improper or illegitimate use of Dow’s information system resources or violation of Dow’s information security policies and procedures is subject to disciplinary action. Dow’s security posture is supported by a comprehensive defense-in-depth strategy that relies on layers of technology including Multi-Factor Authentication and principles of Zero Trust to ensure that access to information and communication is vetted and secure. Dow also utilizes internal and external audits and assessments, vulnerability testing, governance processes over outsourced service providers, active risk management and benchmarking against peers in the industry to validate Dow’s security posture. Dow also engages external firms to measure Dow’s NIST CSF maturity level. As of the date of this report, no risks from cybersecurity threats, including those resulting from any previous cybersecurity incidents, have materially affected, or are reasonably likely to materially affect, the Corporation, including its business strategy, results of operations or financial condition. Although the Corporation has mature processes in place to identify and mitigate potential risks from cybersecurity threats, such risks cannot be completely eliminated. More information on the risks of cybersecurity threats and potential impact to the Corporation can be found in Item 1A. Risk Factors. Governance Role of Management Dow’s Information Systems organization is led by Dow’s Chief Information and Digital Officer, who reports to Dow's Chief Operating Officer, and is responsible for administration of the cybersecurity and information security framework and risk management, including that of the Corporation, with oversight by the Dow Inc. Audit Committee. Dow’s Chief Information and Digital Officer has formal education in information technology and more than 30 years of experience in information systems and technology, including as the vice president of Global Information Technology. Prior to joining Dow, the Chief Information and Digital Officer held a variety of leadership roles including vice president of Information Technology at Cargill, Incorporated. The Chief Information and Digital Officer receives regular updates on cybersecurity matters, results of mitigation efforts and cybersecurity incident response and remediation. Dow management responsible for developing and executing its cybersecurity policies is comprised of individuals with either formal education and degrees in information technology or cybersecurity, or with experience working in information technology and cybersecurity, including relevant experience in security related industries. Additionally, leaders in Dow’s information technology function receive periodic training and education on cybersecurity related topics. Certain leaders also obtain industry certifications, such as Certified Information Systems Security Professional or Certified Information Security Manager. Dow’s Cyber Security Operations Center (“CSOC”) serves as the central point for all cybersecurity incidents and reporting, including incidents that directly target employees or Dow internal information systems and incidents originating from third parties. The CSOC provides end-to-end operations for purposes of monitoring, detecting, alerting and responding to cyber incidents. The CSOC evaluates each incident in terms of its impact on Dow’s and the Corporation's operations, ability to conduct business with customers and suppliers, brand reputation and health, safety or the environment, and the speed and degree to which the incident has been contained. The CSOC is also responsible for activating the containment and resolution efforts and third-party service providers are engaged where appropriate to support Dow through the resolution of the incident. The CSOC escalates incidents with significant impact and pervasiveness to Dow’s Corporate Crisis Management Team for further action. After initial identification, the CSOC monitors all cybersecurity incidents for changes in degree of impact or pervasiveness. Role of the Corporation's Board The Corporation's Board of Directors ("Board") recognizes the importance of cybersecurity in safeguarding the Corporation’s sensitive data. The Board is responsible for overseeing overall risk management for the Corporation, including review and approval of the enterprise risk management approach and processes implemented by management to identify, assess, manage and mitigate risk. The Corporation’s Board receives information and updates periodically with respect to the effectiveness of Dow’s cybersecurity and information security framework, data privacy and risk management, which includes that of the Corporation. The Board also receives updates on material incidents relating to information systems security, including cybersecurity incidents.
Cybersecurity Risk Management Processes Integrated [Text Block]	Risk Management and Strategy Dow has processes in place to identify, assess and monitor material risks from cybersecurity threats, including the material risks of the Corporation. These processes are part of Dow’s overall enterprise risk management process and have been embedded in Dow’s operating procedures, internal controls and information systems. Dow's comprehensive cybersecurity and information security framework includes risk assessment and mitigation through a threat intelligence-driven approach, application controls, and enhanced security with ransomware defense. The framework leverages International Organization for Standardizations 27001/27002 standards for general information technology controls, International Society of Automation/International Electrotechnical Commission standards for industrial automation, the National Institute of Standards and Technology Cyber Security Framework ("NIST CSF") for measuring overall readiness to respond to cyber threats, and Sarbanes-Oxley for assessment of internal controls. In addition, Dow maintains business continuity and disaster recovery plans as well as a cybersecurity insurance policy. Dow has comprehensive processes to manage cybersecurity risks when engaging with third-party service providers, including reviewing questionnaires and independent quantitative scores of the vendor’s cyber hygiene, maintaining robust controls to address and mitigate significant risks that may arise, and performing ongoing assessments and reviews throughout the duration of the engagement. Dow has established cybersecurity and information security awareness training programs. Formal training on topics relating to Dow’s cybersecurity, data privacy and information security policies and procedures is mandatory at least annually for all employees, contractors and third parties with access to Dow’s network. Training is administered and tracked through online learning modules. Training topics include how to escalate suspicious activities including phishing, viruses, spams, insider threats, suspect human behaviors or safety issues. Based on role and location, some employees receive additional in-depth training to provide more comprehensive knowledge on potential risks related to their individual job responsibilities. Training is supplemented through regular Dow company-wide communications with frequent updates to educate on the latest adversary trends and social engineering techniques. Additionally, Dow engages in cyber crisis response simulations to assess Dow’s ability to adapt to information and operational technology threats. Improper or illegitimate use of Dow’s information system resources or violation of Dow’s information security policies and procedures is subject to disciplinary action. Dow’s security posture is supported by a comprehensive defense-in-depth strategy that relies on layers of technology including Multi-Factor Authentication and principles of Zero Trust to ensure that access to information and communication is vetted and secure. Dow also utilizes internal and external audits and assessments, vulnerability testing, governance processes over outsourced service providers, active risk management and benchmarking against peers in the industry to validate Dow’s security posture. Dow also engages external firms to measure Dow’s NIST CSF maturity level. As of the date of this report, no risks from cybersecurity threats, including those resulting from any previous cybersecurity incidents, have materially affected, or are reasonably likely to materially affect, the Corporation, including its business strategy, results of operations or financial condition. Although the Corporation has mature processes in place to identify and mitigate potential risks from cybersecurity threats, such risks cannot be completely eliminated. More information on the risks of cybersecurity threats and potential impact to the Corporation can be found in Item 1A. Risk Factors.
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]	As of the date of this report, no risks from cybersecurity threats, including those resulting from any previous cybersecurity incidents, have materially affected, or are reasonably likely to materially affect, the Corporation, including its business strategy, results of operations or financial condition. Although the Corporation has mature processes in place to identify and mitigate potential risks from cybersecurity threats, such risks cannot be completely eliminated. More information on the risks of cybersecurity threats and potential impact to the Corporation can be found in Item 1A. Risk Factors.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Role of the Corporation's Board The Corporation's Board of Directors ("Board") recognizes the importance of cybersecurity in safeguarding the Corporation’s sensitive data. The Board is responsible for overseeing overall risk management for the Corporation, including review and approval of the enterprise risk management approach and processes implemented by management to identify, assess, manage and mitigate risk. The Corporation’s Board receives information and updates periodically with respect to the effectiveness of Dow’s cybersecurity and information security framework, data privacy and risk management, which includes that of the Corporation. The Board also receives updates on material incidents relating to information systems security, including cybersecurity incidents.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	Dow’s Cyber Security Operations Center (“CSOC”) serves as the central point for all cybersecurity incidents and reporting, including incidents that directly target employees or Dow internal information systems and incidents originating from third parties. The CSOC provides end-to-end operations for purposes of monitoring, detecting, alerting and responding to cyber incidents. The CSOC evaluates each incident in terms of its impact on Dow’s and the Corporation's operations, ability to conduct business with customers and suppliers, brand reputation and health, safety or the environment, and the speed and degree to which the incident has been contained. The CSOC is also responsible for activating the containment and resolution efforts and third-party service providers are engaged where appropriate to support Dow through the resolution of the incident. The CSOC escalates incidents with significant impact and pervasiveness to Dow’s Corporate Crisis Management Team for further action. After initial identification, the CSOC monitors all cybersecurity incidents for changes in degree of impact or pervasiveness.
Cybersecurity Risk Role of Management [Text Block]	Role of Management Dow’s Information Systems organization is led by Dow’s Chief Information and Digital Officer, who reports to Dow's Chief Operating Officer, and is responsible for administration of the cybersecurity and information security framework and risk management, including that of the Corporation, with oversight by the Dow Inc. Audit Committee. Dow’s Chief Information and Digital Officer has formal education in information technology and more than 30 years of experience in information systems and technology, including as the vice president of Global Information Technology. Prior to joining Dow, the Chief Information and Digital Officer held a variety of leadership roles including vice president of Information Technology at Cargill, Incorporated. The Chief Information and Digital Officer receives regular updates on cybersecurity matters, results of mitigation efforts and cybersecurity incident response and remediation. Dow management responsible for developing and executing its cybersecurity policies is comprised of individuals with either formal education and degrees in information technology or cybersecurity, or with experience working in information technology and cybersecurity, including relevant experience in security related industries. Additionally, leaders in Dow’s information technology function receive periodic training and education on cybersecurity related topics. Certain leaders also obtain industry certifications, such as Certified Information Systems Security Professional or Certified Information Security Manager. Dow’s Cyber Security Operations Center (“CSOC”) serves as the central point for all cybersecurity incidents and reporting, including incidents that directly target employees or Dow internal information systems and incidents originating from third parties. The CSOC provides end-to-end operations for purposes of monitoring, detecting, alerting and responding to cyber incidents. The CSOC evaluates each incident in terms of its impact on Dow’s and the Corporation's operations, ability to conduct business with customers and suppliers, brand reputation and health, safety or the environment, and the speed and degree to which the incident has been contained. The CSOC is also responsible for activating the containment and resolution efforts and third-party service providers are engaged where appropriate to support Dow through the resolution of the incident. The CSOC escalates incidents with significant impact and pervasiveness to Dow’s Corporate Crisis Management Team for further action. After initial identification, the CSOC monitors all cybersecurity incidents for changes in degree of impact or pervasiveness.
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Dow’s Information Systems organization is led by Dow’s Chief Information and Digital Officer, who reports to Dow's Chief Operating Officer, and is responsible for administration of the cybersecurity and information security framework and risk management, including that of the Corporation, with oversight by the Dow Inc. Audit Committee.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Dow’s Chief Information and Digital Officer has formal education in information technology and more than 30 years of experience in information systems and technology, including as the vice president of Global Information Technology. Prior to joining Dow, the Chief Information and Digital Officer held a variety of leadership roles including vice president of Information Technology at Cargill, Incorporated. The Chief Information and Digital Officer receives regular updates on cybersecurity matters, results of mitigation efforts and cybersecurity incident response and remediation. Dow management responsible for developing and executing its cybersecurity policies is comprised of individuals with either formal education and degrees in information technology or cybersecurity, or with experience working in information technology and cybersecurity, including relevant experience in security related industries. Additionally, leaders in Dow’s information technology function receive periodic training and education on cybersecurity related topics. Certain leaders also obtain industry certifications, such as Certified Information Systems Security Professional or Certified Information Security Manager.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation Except as otherwise indicated by the context, the terms "Corporation" and "UCC" as used herein mean Union Carbide Corporation and its consolidated subsidiaries. The accompanying consolidated financial statements of the Corporation were prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") and include the assets, liabilities, revenues and expenses of all majority-owned subsidiaries over which the Corporation exercises control and, when applicable, entities for which the Corporation has a controlling financial interest. Investments in nonconsolidated affiliates (20-50 percent owned companies, joint ventures and partnerships) are accounted for using the equity method. The Corporation is a wholly owned subsidiary of The Dow Chemical Company ("TDCC"). In accordance with the accounting guidance for earnings per share, the presentation of earnings per share is not required in financial statements of wholly owned subsidiaries. TDCC conducts its worldwide operations through global businesses and the Corporation's business activities comprise components of TDCC's global businesses rather than stand-alone operations. Further, the Corporation sells substantially all of its products to TDCC in order to simplify the customer interface process. The Corporation's Board of Directors ("Board"), acting pursuant to the authority delegated to it by TDCC, functions as the Corporation's chief operating decision maker ("CODM") to assess UCC's results and allocate resources for its operations. The Corporation's results are reported as a single operating segment as the consolidated statements of income are presented to the CODM without further disaggregation. Intercompany transactions and balances are eliminated in consolidation. Transactions with the Corporation’s parent company, TDCC, and other subsidiaries of TDCC, have been reflected as related company transactions in the consolidated financial statements. See Note 17 for additional information.
Use of Estimates in Financial Statement Preparation	Use of Estimates in Financial Statement Preparation The preparation of financial statements in accordance with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. The Corporation's consolidated financial statements include amounts that are based on management's best estimates and judgments. Actual results could differ from those estimates.
Asbestos-Related Matters	Asbestos-Related Matters Accruals for asbestos-related matters, including defense and processing costs, are recorded based on an analysis of claim and resolution activity, defense spending and pending and future claims. These accruals are assessed at each balance sheet date to determine if the asbestos-related liability remains appropriate. Accruals for asbestos-related matters are included in the consolidated balance sheets in "Asbestos-related liabilities - current" and "Asbestos-related liabilities - noncurrent." See Note 12 for additional information.
Legal Costs	Legal Costs The Corporation expenses legal costs as incurred, with the exception of defense and processing costs associated with asbestos-related matters.
Foreign Currency Translation	Foreign Currency Translation While the Corporation's consolidated subsidiaries are primarily based in the United States, the Corporation has small subsidiaries in Asia Pacific and the rest of the world. For those subsidiaries, the local currency has been primarily used as the functional currency. Translation gains and losses of those operations that use local currency as the functional currency are included in the consolidated balance sheets in "Accumulated other comprehensive loss" ("AOCL"). Where the U.S. dollar is used as the functional currency, foreign currency translation gains and losses are reflected in income.
Environmental Matters	Environmental Matters Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated based on current law and existing technologies. These accruals are adjusted periodically as assessment and remediation efforts progress or as additional technical or legal information becomes available. Accruals for environmental liabilities are included in the consolidated balance sheets in "Accrued and other current liabilities" and "Other noncurrent obligations" at undiscounted amounts. Accruals for related insurance or other third-party recoveries for environmental liabilities are recorded when it is probable that a recovery will be realized and are included in the consolidated balance sheets in "Accounts receivable - Other." Environmental costs are capitalized if the costs extend the life of the property, increase its capacity, and/or mitigate or prevent contamination from future operations. Environmental costs are also capitalized in recognition of legal asset retirement obligations resulting from the acquisition, construction and/or normal operation of a long-lived asset. Costs related to environmental contamination treatment and cleanup are charged to expense. Estimated future incremental operations, maintenance and management costs directly related to remediation are accrued when such costs are probable and reasonably estimable.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include time deposits and investments with maturities of three months or less at the time of purchase.
Financial Instruments	Financial Instruments The Corporation calculates the fair value of financial instruments using quoted market prices when available. When quoted market prices are not available for financial instruments, the Corporation uses standard pricing models with market-based inputs that take into account the present value of estimated future cash flows.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value. The method of determining cost for each subsidiary varies among last-in, first-out ("LIFO"); first-in, first-out ("FIFO"); and average cost, and is used consistently from year to year. The Corporation routinely utilizes exchange, swap and tolling arrangements with other companies for raw materials and finished goods to increase sourcing options, shorten delivery times, and reduce freight and other transportation costs. These transactions are treated as non-monetary exchanges and are valued at cost.
Property	Property Land, buildings and equipment are carried at cost less accumulated depreciation or amortization. Property under finance lease agreements is carried at the present value of lease payments over the lease term less accumulated amortization. Depreciation is based on the estimated service lives of depreciable assets and is calculated using the straight-line method. Fully depreciated assets are retained in property and accumulated depreciation accounts until they are disposed. In the case of disposals, assets and related accumulated depreciation are removed from the accounts, and the net amounts, less proceeds from disposal, are included in income.
Impairment and Disposal of Long-Lived Assets	Impairment and Disposal of Long-Lived Assets The Corporation evaluates long-lived assets (property, finite-lived intangible assets and lease right-of-use assets) for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When undiscounted future cash flows are not expected to be sufficient to recover an asset's carrying amount, the asset is written down to its fair value based on bids received from third parties or a discounted cash flow analysis based on market participant assumptions. Long-lived assets to be disposed of by sale, if material, are classified as held for sale and reported at the lower of carrying amount or fair value less cost to sell, and depreciation/amortization is ceased. Long-lived assets to be disposed of other than by sale are classified as held and used until they are disposed of and reported at the lower of carrying amount or fair value, and depreciation/amortization is recognized over the remaining useful life of the assets.
Other Intangible Assets	Intangible Assets Finite-lived intangible assets, such as developed technology and software, are amortized over their estimated useful lives, generally on a straight-line basis for periods ranging primarily from 3 to 20 years.
Investments in Related Companies	Investments in Related Companies Investments in related companies consist of the Corporation's ownership interests in TDCC subsidiaries located in the United States and Latin America. The Corporation accounts for these investments using the cost method as it does not have significant influence over the operating and financial policies of these related companies.
Leases	Leases The Corporation determines whether a contract contains a lease at contract inception. A contract contains a lease if there is an identified asset and the Corporation has the right to control the asset. Operating lease right-of-use (“ROU”) assets represent UCC’s right to use an underlying asset for the lease term, and lease liabilities represent UCC’s obligation to make lease payments arising from the lease. Operating lease ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. The Corporation uses the incremental borrowing rate in determining the present value of lease payments, unless the implicit rate is readily determinable. If lease terms include options to extend or terminate the lease, the ROU asset and lease liability are measured based on the reasonably certain decision. Leases with a term of 12 months or less at the commencement date are not recognized on the balance sheet and are expensed as incurred. The Corporation has lease agreements with lease and non-lease components, which are accounted for as a single lease component for nearly all classes of leased assets for which UCC is the lessee. Additionally, for certain equipment leases, the portfolio approach is applied to account for the operating lease ROU assets and lease liabilities. In the consolidated statements of income, lease expense for operating lease payments is recognized on a straight-line basis over the lease term. For finance leases, interest expense is recognized on the lease liability and the ROU asset is amortized over the lease term. Some leasing arrangements require variable payments that are dependent upon usage or output, or may vary for other reasons, such as insurance or tax payments. Variable lease payments are recognized as incurred and are not presented as part of the ROU asset or lease liability. See Note 13 for additional information.
Revenue	Revenue Substantially all of the Corporation's revenues are generated by sales to TDCC. Revenue for product sales to related companies is recognized when the related company obtains control of the product, which occurs either at the time that production is complete or shipped free on board ("FOB") from UCC's manufacturing facility, in accordance with the sales agreement between the Corporation and TDCC. The Corporation recognizes revenue for product sales to trade customers when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Corporation expects to receive in exchange for those goods or services. To determine revenue recognition, the Corporation performs the following five steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. See Note 3 for additional information.
Severance Costs	Severance Costs Management routinely reviews its operations around the world in an effort to ensure competitiveness across its operations and geographic regions. When the reviews result in a workforce reduction related to the shutdown of facilities or other optimization activities, severance benefits are provided to employees primarily under ongoing benefit arrangements. These severance costs are accrued once management commits to a plan of termination and it becomes probable that employees will be entitled to benefits at amounts that can be reasonably estimated.
Income Taxes	Income Taxes The Corporation accounts for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences of temporary differences between the carrying amounts and tax bases of assets and liabilities using enacted tax rates. The effect of a change in tax rates on deferred tax assets or liabilities is recognized in income in the period that includes the enactment date. The Corporation is included in the same consolidated federal income tax group and consolidated income tax return as TDCC. The Corporation accounts for its income taxes following the formula in the TDCC-UCC Tax Sharing Agreement used to compute the amount due to TDCC or UCC for UCC's share of taxable income and tax attributes on the consolidated income tax return. This method generally follows the separate return method. The amounts reported as income taxes payable or receivable represent the Corporation's payment obligation (or refundable amount) to TDCC based on a theoretical tax liability calculated on a separate return method. The Corporation recognizes the financial statement effects of an uncertain income tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. The Corporation accrues for non-income tax contingencies when it is probable that a liability to a taxing authority has been incurred and the amount of the contingency can be reasonably estimated. Provision is made for taxes on undistributed earnings of foreign subsidiaries and related companies to the extent that such earnings are not deemed to be permanently invested.

SUPPLEMENTARY INFORMATION (Tabl

SUPPLEMENTARY INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2024
Supplementary Information [Abstract]
Sundry Income, Net	Sundry Income (Expense) - Net In millions 2024 2023 2022 General administrative and overhead type services and service fees 1 $ (69) $ (72) $ (65) Net commission expense - related company 1 (20) (19) (19) Non-operating pension and other postretirement benefit plan net credits (costs) 2 (22) (144) 34 Gain on sale of ownership interest in related party 3 2 206 — Net gain on sales of property 1 1 3 Equity in earnings of nonconsolidated affiliate 1 — 10 — Other - net (2) (7) (6) Total sundry income (expense) - net $ (110) $ (25) $ (53) 1. See Note 17 for additional information. 2. The 2023 expense includes pretax pension settlement charges of $ 149 million 3. These amounts relate to the sale of the Corporation's ownership interest in Dow Technology Investments LLC. See Note 17 for additional information.
Supplier Finance Program	The following table summarizes the activity of the SCF program for the years ended December 31, 2024 and 2023: Supplier Finance Program Activity In millions 2024 2023 Confirmed obligations outstanding at Jan 1 $ 27 $ 29 Invoices confirmed to financial intermediary 117 102 Confirmed invoices paid to financial intermediary (108) (104) Confirmed obligations outstanding at Dec 31 $ 36 $ 27
Schedule of Cash Flow, Supplemental Disclosures	The following table shows cash paid (refunded) for interest and income taxes for the years ended December 31, 2024, 2023 and 2022: Supplemental Cash Flow Information 2024 2023 2022 In millions Cash paid (refunded) during year for: Interest $ 21 $ 26 $ 31 Income taxes 1 $ (211) $ 102 $ 63 Noncash investing activities: Capitalized interest - related company term loan 1 $ 99 $ — $ — 1. See Note 17 for additional information.

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Schedule of geographic allocation of income	Geographic Allocation of Income and Provision for Income Taxes In millions 2024 2023 2022 Income (loss) before income taxes Domestic $ 297 $ 455 $ 767 Foreign — (1) (1) Income before income taxes $ 297 $ 454 $ 766 Current tax expense (benefit) Federal $ 45 $ 96 $ 157 State and local (3) (6) 9 Foreign 1 1 1 Total current tax expense $ 43 $ 91 $ 167 Deferred tax expense (benefit) Federal $ 7 $ (19) $ (2) State and local (3) 1 3 Foreign — — 4 Total deferred tax expense (benefit) $ 4 $ (18) $ 5 Provision for income taxes $ 47 $ 73 $ 172 Net income $ 250 $ 381 $ 594
Schedule of Effective Income Tax Rate Reconciliation	Reconciliation to U.S. Statutory Rate 2024 2023 2022 Statutory U.S. federal income tax rate 21.0 % 21.0 % 21.0 % Unrecognized tax benefits and related interest (1.1) (2.7) (0.7) Federal tax accrual adjustments (2.1) — — State and local tax impact (2.1) (1.2) 1.7 Other - net 0.1 (1.0) 0.5 Effective Tax Rate 15.8 % 16.1 % 22.5 %
Schedule of Deferred Tax Assets and Liabilities	Deferred Tax Balances at Dec 31 2024 2023 In millions Assets Liabilities Assets Liabilities Property $ — $ 109 $ — $ 123 Tax loss and credit carryforwards 13 — 11 — Postretirement benefit obligations 95 — 92 — Other accruals and reserves 251 — 270 — Inventory 1 — 2 — Other - net 12 — 16 — Subtotal $ 372 $ 109 $ 391 $ 123 Valuation allowances 1 (10) — (11) — Total $ 362 $ 109 $ 380 $ 123 1. Primarily related to the realization of recorded tax benefits on state tax loss carryforwards from operations in the United States.
Summary of Operating Loss Carryforwards	Operating Loss and Tax Credit Carryforwards at Dec 31 2024 2023 In millions Assets Assets Operating loss carryforwards Expire within 5 years $ 4 $ 5 Expire after 5 years or indefinite expiration 4 3 Total operating loss carryforwards $ 8 $ 8 Tax credit carryforwards Expire within 5 years $ 2 $ 2 Expire after 5 years or indefinite expiration 3 1 Total tax credit carryforwards $ 5 $ 3 Total tax loss and tax credit carryforwards $ 13 $ 11
Schedule of Unrecognized Tax Benefits Roll Forward	The following table provides a reconciliation of the Corporation's unrecognized tax benefits: Total Gross Unrecognized Tax Benefits In millions 2024 2023 2022 Total unrecognized tax benefits at Jan 1 $ 8 $ 8 $ 8 Decreases related to positions taken on items from prior years — — — Increases related to positions taken on items from prior years — — — Total unrecognized tax benefits at Dec 31 $ 8 $ 8 $ 8 Total unrecognized tax benefits that, if recognized, would impact the effective tax rate $ 8 $ 8 $ 8 Total amount of interest and penalties (benefit) recognized in "Provision for income taxes" $ (4) $ (12) $ (10) Total accrual for interest and penalties recognized in the consolidated balance sheets $ 11 $ 11 $ 10

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	Dec. 31, 2024
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	The following table provides a breakdown of inventories: Inventories at Dec 31 In millions 2024 2023 Finished goods $ 238 $ 189 Work in process 44 30 Raw materials 72 60 Supplies 94 87 Total $ 448 $ 366 Adjustment of inventories to the LIFO basis (152) (139) Total inventories $ 296 $ 227

PROPERTY (Tables)

PROPERTY (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of property	The following table provides a breakdown of property: Property at Dec 31 Estimated Useful Lives (Years) In millions 2024 2023 Land and land improvements 0-25 $ 68 $ 68 Buildings 5-50 259 259 Machinery and equipment 3-20 4,875 4,799 Other property 3-30 112 111 Construction in progress — 418 169 Total property $ 5,732 $ 5,406
Schedule of other items related to property	The following table provides information regarding depreciation expense and capitalized interest: In millions 2024 2023 2022 Depreciation expense $ 117 $ 146 $ 165 Capitalized interest $ 13 $ 8 $ 5

INVESTMENTS IN RELATED COMPAN_2

INVESTMENTS IN RELATED COMPANIES (Tables)	12 Months Ended
	Dec. 31, 2024
Investments in Related Companies [Abstract]
Equity Securities without Readily Determinable Fair Value	The Corporation's ownership interests in related companies at December 31, 2024 and 2023 were as follows: Investments in Related Companies at Dec 31 Ownership Interest Investment Balance In millions 2024 2023 2024 2023 Dow International Holdings Company 5 % 5 % $ 232 $ 232 Dow Quimica Mexicana S.A. de C.V. 14 % 14 % 5 5 Total investments in related companies $ 237 $ 237

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2024
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Schedule of Intangible Assets and Goodwill	The following table provides information regarding the Corporation's intangible assets: Intangible Assets at Dec 31 2024 2023 In millions Gross Carrying Amount Accum Amort Net Gross Carrying Amount Accum Amort Net Intangible assets with finite lives: Developed technology $ 33 $ (33) $ — $ 33 $ (33) $ — Software 68 (62) 6 67 (60) 7 Total intangible assets $ 101 $ (95) $ 6 $ 100 $ (93) $ 7
Schedule Of Finite Lived Intangible Assets Amortization Expense Table	The following table provides information regarding amortization expense: Amortization Expense In millions 2024 2023 2022 Software, included in "Cost of sales" $ 2 $ 3 $ 5
Schedule of Expected Amortization Expense	Total estimated amortization expense for the next five fiscal years, including amounts expected to be capitalized, is as follows: Estimated Amortization Expense for Next Five Years In millions 2025 $ 2 2026 $ 2 2027 $ 1 2028 $ 1 2029 $ 1

NOTES PAYABLE AND LONG-TERM D_2

NOTES PAYABLE AND LONG-TERM DEBT (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Short-term Debt	Notes Payable at Dec 31 In millions 2024 2023 Notes payable to related companies $ 19 $ 68 Notes payable - other — 1 Total notes payable $ 19 $ 69 Year-end average interest rates 3.15 % 1.06 %
Schedule of Long-term Debt Instruments	Long-Term Debt at Dec 31 2024 Average Rate 2024 2023 Average Rate 2023 In millions Promissory notes and debentures: Debentures due 2025 6.79 % $ 12 6.79 % $ 12 Debentures due 2025 7.50 % 113 7.50 % 113 Debentures due 2096 7.75 % 135 7.75 % 135 Finance lease obligations 1 11 3 Unamortized debt discount and issuance costs (2) (3) Long-term debt due within one year (126) (1) Total long-term debt $ 143 $ 259 1. See Note 13 for additional information.
Schedule of Maturities of Long-term Debt	Maturities of Long-Term Debt for Next Five Years at Dec 31, 2024 In millions 2025 $ 126 2026 $ 1 2027 $ 1 2028 $ 1 2029 $ 1

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Environmental Loss Contingency	The following table summarizes the activity in the Corporation's accrued obligations for environmental matters for the years ended December 31, 2024 and 2023: Accrued Liability for Environmental Matters In millions 2024 2023 Balance at Jan 1 $ 194 $ 183 Accrual adjustment 37 49 Payments against reserve (47) (37) Foreign currency impact — (1) Balance at Dec 31 $ 184 $ 194

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	12 Months Ended
	Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The changes in each component of AOCL for the years ended December 31, 2024, 2023 and 2022 were as follows: Accumulated Other Comprehensive Loss 2024 2023 2022 In millions Cumulative Translation Adjustment Beginning balance $ (53) $ (54) $ (53) Unrealized gains (losses) on foreign currency translation 1 1 — (Gains) losses reclassified from AOCL to net income 1 — — (1) Other comprehensive income (loss), net of tax 1 1 (1) Ending balance $ (52) $ (53) $ (54) Pension and Other Postretirement Benefits Beginning balance $ (1,290) $ (1,348) $ (1,498) Gains (losses) arising during the period (57) (116) 96 Tax (expense) benefit 13 25 (22) Net gains (losses) arising during the period (44) (91) 74 Amortization of net loss and prior service credit reclassified from AOCL to net income 2 55 194 98 Tax expense (benefit) 3 (13) (45) (22) Net loss and prior service credit reclassified from AOCL to net income 42 149 76 Other comprehensive income (loss), net of tax (2) 58 150 Ending balance $ (1,292) $ (1,290) $ (1,348) Total AOCL ending balance $ (1,344) $ (1,343) $ (1,402) 1. Reclassified to "Sundry income (expense) - net." 2. These AOCL components are included in the computation of net periodic benefit cost (credit) of the Corporation's defined benefit pension and other postretirement benefit plans. See Note 15 for additional information. 3. Reclassified to "Provision for income taxes."

PENSION PLANS AND OTHER POSTR_2

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)	12 Months Ended
	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan	Summarized information on the Corporation's pension and other postretirement benefit plans is as follows: Change in Projected Benefit Obligations, Plan Assets and Funded Status for All Plans Defined Benefit Other Postretirement Benefit Plan In millions 2024 2023 2024 2023 Change in projected benefit obligations: Benefit obligations at beginning of year $ 2,633 $ 2,860 $ 133 $ 128 Service cost — 32 — — Interest cost 129 147 7 7 Actuarial changes in assumptions and experience (85) 55 (14) 6 Benefits paid (209) (246) (7) (8) Settlement 1 — (211) — — Other — (4) 1 — Benefit obligations at end of year $ 2,468 $ 2,633 $ 120 $ 133 Change in plan assets: Fair value of plan assets at beginning of year $ 2,370 $ 2,679 $ — $ — Actual return on plan assets 10 146 — — Employer contributions 2 2 — — Asset transfers — (5) — — Benefits paid (209) (246) — — Settlement 2 — (211) — — Other 4 5 — — Fair value of plan assets at end of year $ 2,177 $ 2,370 $ — $ — Funded status at end of year $ (291) $ (263) $ (120) $ (133) Net amounts recognized in the consolidated balance sheets at Dec 31: Deferred charges and other assets $ — $ 10 $ — $ — Accrued and other current liabilities (1) (2) (11) (12) Pension and other postretirement benefits - noncurrent (290) (271) (109) (121) Net amount recognized $ (291) $ (263) $ (120) $ (133) Pretax amounts recognized in accumulated other comprehensive loss at Dec 31: Net loss (gain) $ 1,756 $ 1,752 $ (104) $ (102) 1. The 2023 impact primarily relates to the transfer of certain pension benefit obligations through the purchase of annuity contracts from an insurance company, triggering settlement accounting. 2. The 2023 impact primarily relates to the purchase of an annuity contract associated with the transfer of certain pension benefit obligations to an insurance company, triggering settlement accounting.
Schedule of Net Benefit Costs	Net Periodic Benefit Cost (Credit) for All Plans for the Year Ended Dec 31 Defined Benefit Pension Plans Other Postretirement Benefit Plan In millions 2024 2023 2022 2024 2023 2022 Net Periodic Benefit Cost (Credit): Service cost $ — $ 32 $ 37 $ — $ — $ 1 Interest cost 129 147 91 7 7 3 Expected return on plan assets (169) (204) (226) — — — Amortization of prior service credit — — (1) — — — Amortization of net (gain) loss 67 60 108 (12) (15) (9) Settlement loss 1 — 149 — — — — Net periodic benefit cost (credit) $ 27 $ 184 $ 9 $ (5) $ (8) $ (5) Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss: Net (gain) loss $ 71 $ 109 $ (47) $ (14) $ 7 $ (49) Amortization of prior service credit — — 1 — — — Amortization of net gain (loss) (67) (60) (108) 12 15 9 Settlement loss 1 — (149) — — — — Total recognized in other comprehensive (income) loss $ 4 $ (100) $ (154) $ (2) $ 22 $ (40) Total recognized in net periodic benefit cost and other comprehensive (income) loss $ 31 $ 84 $ (145) $ (7) $ 14 $ (45) 1. The 2023 impact relates to the settlement of certain pension benefit obligations through the purchase of a nonparticipating group annuity contract from an insurance company.
Schedule of Expected Benefit Payments	The estimated future benefit payments, reflecting expected future service, as appropriate, are presented in the following table: Estimated Future Benefit Payments at Dec 31, 2024 Defined Benefit Pension Plans Other Postretirement Benefit Plan In millions 2025 1 $ 290 $ 11 2026 209 11 2027 205 11 2028 202 11 2029 197 11 2030 through 2034 914 48 Total $ 2,017 $ 103 1. Includes benefit payments related to the planned termination of a U.S. tax-qualified pension plan.
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Assumptions Used	The weighted-average assumptions used to determine pension plan obligations and net periodic benefit cost are provided below: Pension Plan Assumptions Benefit Obligations Net Periodic Benefit Cost 2024 2023 2024 2023 2022 Discount rate 5.67 % 5.25 % 5.25 % 5.72 % 2.94 % Interest crediting rate for applicable benefits 3.47 % 4.50 % 4.50 % 4.50 % 4.50 % Rate of compensation increase 1 — % 4.25 % 4.25 % 4.25 % 4.25 % Expected return on plan assets 6.40 % 6.80 % 6.80 % 1. The rate of compensation increase assumption is not relevant at December 31, 2024, due to the freezing of plan benefits.
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets	Pension Plans with Accumulated Benefit Obligations or Pension Benefit Obligations in Excess of Plan Assets at Dec 31 In millions 2024 2023 Accumulated benefit obligations / Pension benefit obligations 1 $ 2,468 $ 2,593 Fair value of plan assets $ 2,177 $ 2,320 1. Cumulative accumulated pension obligations in excess of plan assets and cumulative pension benefit obligations in excess of plan assets are the same at December 31, 2024 and 2023.
Schedule of Projected Benefit Obligations in Excess of Fair Value of Plan Assets
Schedule of Allocation of Plan Assets	The weighted-average target allocation for plan assets of the Corporation's pension plan is summarized as follows: Target Allocation for Plan Assets at Dec 31, 2024 Target Allocation Asset Category Equity securities 23 % Fixed income securities 45 Alternative investments 27 Other 5 Total 100 %
Schedule of Defined Benefit Plans Disclosures	The following table summarizes the bases used to measure the Corporation’s pension plan assets at fair value for the years ended December 31, 2024 and 2023: Basis of Fair Value Measurements Dec 31, 2024 Dec 31, 2023 In millions Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 178 $ 157 $ 21 $ — $ 203 $ 188 $ 15 $ — Equity securities: U.S. equity securities $ 153 $ 153 $ — $ — $ 239 $ 238 $ 1 $ — Non - U.S. equity securities 225 213 11 1 250 238 11 1 Total equity securities $ 378 $ 366 $ 11 $ 1 $ 489 $ 476 $ 12 $ 1 Fixed income securities: Debt - government-issued $ 660 $ — $ 660 $ — $ 720 $ — $ 720 $ — Debt - corporate-issued 216 — 216 — 265 1 264 — Debt - asset-backed 34 — 34 — 37 — 37 — Total fixed income securities $ 910 $ — $ 910 $ — $ 1,022 $ 1 $ 1,021 $ — Alternative investments: Derivatives - asset position $ 12 $ — $ 12 $ — $ 7 $ — $ 7 $ — Derivatives - liability position (47) — (47) — (13) — (13) — Total alternative investments $ (35) $ — $ (35) $ — $ (6) $ — $ (6) $ — Other investments $ — $ — $ — $ — $ 1 $ 1 $ — $ — Subtotal $ 1,431 $ 523 $ 907 $ 1 $ 1,709 $ 666 $ 1,042 $ 1 Investments measured at net asset value: Hedge funds $ 140 $ 125 Private markets 460 344 Real estate 155 199 Total investments measured at net asset value $ 755 $ 668 Items to reconcile to fair value of plan assets: Pension trust receivables 1 $ 1 $ 7 Pension trust payables 2 (10) (14) Total $ 2,177 $ 2,370 1. Primarily receivables for investment securities sold. 2. Primarily payables for investment securities purchased.
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets	The following table summarizes the changes in fair value of Level 3 pension plan assets for the years ended December 31, 2024 and 2023: Fair Value Measurement of Level 3 Pension Plan Assets Equity Securities Alternative Investments Total In millions Balance at Jan 1, 2023 $ — $ 2 $ 2 Actual return on plan assets: Relating to assets held at Dec 31, 2023 1 (2) (1) Balance at Dec 31, 2023 $ 1 $ — $ 1 Actual return on plan assets: Relating to assets held at Dec 31, 2024 — — — Balance at Dec 31, 2024 $ 1 $ — $ 1
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Assumptions Used	The weighted-average assumptions used to determine other postretirement benefit plan obligations and net periodic benefit cost for the plan are provided in the following table: Other Postretirement Benefit Plan Assumptions Benefit Obligations at Dec 31 Net Periodic Benefit Cost for the Year Ended 2024 2023 2024 2023 2022 Discount rate 5.64 % 5.20 % 5.20 % 5.56 % 2.84 % Health care cost trend rate assumed for next year 7.00 % 6.50 % 6.50 % 6.57 % 6.50 % Rate to which the cost trend rate is assumed to decline (the ultimate health care cost trend rate) 5.00 % 5.00 % 5.00 % 5.00 % 5.00 % Year that the rate reaches the ultimate health care cost trend rate 2033 2033 2033 2033 2028

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Lease, Cost [Table Text Block]	The components of lease cost for operating and finance leases for the years ended December 31, 2024, 2023 and 2022 were as follows: Lease Cost 2024 2023 2022 In millions Operating lease cost $ 18 $ 25 $ 25 Short-term lease cost 57 41 31 Variable lease cost 19 25 19 Amortization of right-of-use assets - finance 2 3 3 Total lease cost $ 96 $ 94 $ 78
Schedule of Supplemental Cash Flow Information Related to Leases [Table Text Block]	The following table provides supplemental cash flow and other information related to leases: Other Lease Information 2024 2023 2022 In millions Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 18 $ 24 $ 25 Financing cash flows for finance leases $ 2 $ 3 $ 3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 2 $ 12 $ 2 Finance leases $ 11 $ 2 $ 1
Schedule of Lease Assets and Liabilities [Table Text Block]	The following table summarizes the lease-related assets and liabilities recorded in the consolidated balance sheets at December 31, 2024 and 2023: Lease Position Balance Sheet Classification Dec 31, 2024 Dec 31, 2023 In millions Assets Operating lease assets Operating lease right-of-use assets $ 61 $ 85 Finance lease assets Property 25 14 Finance lease amortization Accumulated depreciation (13) (12) Total lease assets $ 73 $ 87 Liabilities Current Operating Operating lease liabilities - current $ 12 $ 17 Finance Long-term debt due within one year 1 1 Noncurrent Operating Operating lease liabilities - noncurrent 49 68 Finance Long-Term Debt 10 2 Total lease liabilities $ 72 $ 88
Lease Terms and Discount Rates [Table Text Block]	The weighted-average remaining lease term and discount rate for leases recorded in the consolidated balance sheets at December 31, 2024 and 2023 are provided below: Lease Term and Discount Rate Dec 31, 2024 Dec 31, 2023 Weighted-average remaining lease term Operating leases 6.7 years 6.7 years Finance leases 7.9 years 3.8 years Weighted-average discount rate Operating leases 3.21 % 3.42 % Finance leases 5.49 % 4.38 %
Maturities of Lease Liabilities [Table Text Block]	The following table provides the maturities of lease liabilities at December 31, 2024: Maturities of Lease Liabilities Dec 31, 2024 In millions Operating Leases Finance Leases 2025 $ 14 $ 2 2026 13 2 2027 12 2 2028 10 2 2029 4 2 2030 and thereafter 16 5 Total future undiscounted lease payments $ 69 $ 15 Less: Imputed interest 8 4 Total present value of lease liabilities $ 61 $ 11

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table summarizes the fair value of the Corporation's financial instruments at December 31, 2024 and 2023: Fair Value of Financial Instruments 2024 2023 In millions Cost Gain Loss Fair Value Cost Gain Loss Fair Value Cash equivalents 1 $ 11 $ — $ — $ 11 $ 10 $ — $ — $ 10 Long-term debt including debt due within one year $ (269) $ — $ (26) $ (295) $ (260) $ — $ (47) $ (307) 1. Money market fund is included in "Cash and cash equivalents" in the consolidated balance sheets and held at amortized cost, which approximates fair value.

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table summarizes UCC’s transactions with TDCC and a TDCC subsidiary related to product and services agreements for the years ended December 31, 2024, 2023 and 2022: Product and Services Agreements Transactions 2024 2023 2022 Income Statement In millions Classification Activity-based costs 1 $ 599 $ 158 $ 89 Cost of sales Commodity and raw materials purchases 2 $ 996 $ 1,078 $ 1,909 Cost of sales Commission expense $ 20 $ 19 $ 19 Sundry income (expense) - net General administrative and overhead type services and service fee 3 $ 69 $ 72 $ 65 Sundry income (expense) - net 1. As a result of UCC's divestment of its infrastructure assets in the fourth quarter of 2023 ("Infrastructure Divestment"), certain site infrastructure-related costs previously administered independently by the Corporation are now performed by another TDCC subsidiary and billed to the Corporation, resulting in increased related party activity-based costs. The Infrastructure Divestment resulted in certain changes in other cost flows, which further increased activity-based costs. Activity-based costs include short-term lease cost of $16 million related to pipeline and site services for the year ended December 31, 2024, included in Lease Cost in Note 13. 2. Period-end balances on hand are included in inventory. The 2024 decrease in purchase costs was primarily due to changes in cost flows resulting from the Infrastructure Divestment. The 2023 decrease in purchase costs was primarily due to lower feedstock and energy costs on lower production. 3. The increase in services and fees in 2023 was primarily due to changes in cost flows and the cost of site infrastructure services resulting from the Infrastructure Divestment.
Dividends Declared	The following table summarizes cash dividends declared and paid to TDCC for the years ended 2024, 2023 and 2022: Cash Dividends Declared and Paid 2024 2023 2022 In millions Cash dividends declared and paid $ 228 $ 512 $ 1,063

BUSINESS AND GEOGRAPHIC AREAS_2

BUSINESS AND GEOGRAPHIC AREAS (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	Sales are attributed to geographic regions based on customer location; long-lived assets are attributed to geographic regions based on asset location. Sales to external customers and long-lived assets by geographic region were as follows: Geographic Region Information United States Asia Pacific Rest of World Total In millions 2024 Sales to external customers 1 $ 119 $ 1 $ — $ 120 Long-lived assets $ 1,093 $ 18 $ 10 $ 1,121 2023 Sales to external customers 1 $ 117 $ 30 $ — $ 147 Long-lived assets $ 862 $ 21 $ 11 $ 894 2022 Sales to external customers 1 $ 182 $ 3 $ 6 $ 191 Long-lived assets $ 1,149 $ 22 $ 11 $ 1,182 1. Of total sales to external customers, sales in Malaysia were approximately 1 percent in 2024, 20 percent in 2023 and 1 percent in 2022, and are included in Asia Pacific.

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Dec. 31, 2024
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	20 years

REVENUE (Details)

REVENUE (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Contract liability	$ 29	$ 31
Accrued Liabilities [Member]
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Current	2	2
Other Noncurrent Liabilities [Member]
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability, Noncurrent	$ 27	$ 29
Maximum [Member]
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	16 years

RESTRUCTURING AND ASSET RELAT_2

RESTRUCTURING AND ASSET RELATED CHARGES - NET (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended			24 Months Ended
	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 14	$ 0	$ 14	$ 0
Accrued and Other Current Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		$ 1	2		$ 1
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	12
Payments for Restructuring					$ 11
Asset write-downs and write-offs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 2		$ 2

SUPPLEMENTARY INFORMATION (Sund

SUPPLEMENTARY INFORMATION (Sundry) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplementary Information [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ (22)	$ (144)	$ 34
Gain on Sale of Investments		2	206	0
Gain (Loss) on Disposition of Property Plant Equipment		1	1	3
Gain (Loss) on Extinguishment of Debt		0	10	0
Other - net		(2)	(7)	(6)
Total sundry income (expense) - net		(110)	(25)	(53)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement and Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total sundry income (expense) - net
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	$ 149
Administrative and overhead fees [Member]
Supplementary Information [Line Items]
Costs and Expenses, Related Party		(69)	(72)	(65)
Net Commission Expense [Member]
Supplementary Information [Line Items]
Costs and Expenses, Related Party		$ (20)	$ (19)	$ (19)

SUPPLEMENTARY INFORMATION (Supp

SUPPLEMENTARY INFORMATION (Supplier Finance Program) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplementary Information [Line Items]
Supplier Finance Program, Obligation, Addition	$ 117	$ 102
Supplier Finance Program, Obligation, Settlement	$ (108)	$ (104)
Supplier Finance Program, Obligation, Current, Statement of Financial Position [Extensible Enumeration]	Trade	Trade	Trade
Accounts Payable
Supplementary Information [Line Items]
Supplier Finance Program, Obligation, Current	$ 36	$ 27	$ 29
Minimum [Member]
Supplementary Information [Line Items]
Supplier Finance Program, Payment Timing, Period	90 days
Maximum [Member]
Supplementary Information [Line Items]
Supplier Finance Program, Payment Timing, Period	120 days

SUPPLEMENTARY INFORMATION SUPPL

SUPPLEMENTARY INFORMATION SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Elements [Abstract]
Interest, net of amounts capitalized	$ 21	$ 26	$ 31
Income taxes	(211)	102	63
Interest Paid, Capitalized, Investing Activities	$ 99	$ 0	$ 0

INCOME TAXES (Schedule of Domes

INCOME TAXES (Schedule of Domestic and Foreign Components of Income Before Income Taxes and Tax Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Geographic Allocation of Income and Provision (Credit) for Income Taxes [Abstract]
Income (Loss) Before Income Taxes, Domestic	$ 297	$ 455	$ 767
Income (Loss) Before Income Taxes, Foreign	0	(1)	(1)
Income before income taxes	297	454	766
Current Federal Tax Expense (Benefit)	45	96	157
Current State and Local Tax Expense (Benefit)	(3)	(6)	9
Current Foreign Tax Expense (Benefit)	1	1	1
Current Income Tax Expense (Benefit)	43	91	167
Deferred Federal Income Tax Expense (Benefit)	7	(19)	(2)
Deferred State and Local Income Tax Expense (Benefit)	(3)	1	3
Deferred Foreign Income Tax Expense (Benefit)	0	0	4
Deferred Income Tax Expense (Benefit)	4	(18)	5
Provision for income taxes	47	73	172
Net Income Attributable to Union Carbide Corporation	$ 250	$ 381	$ 594

INCOME TAXES (Reconciliation to

INCOME TAXES (Reconciliation to U.S. Statutory Rate) (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Statutory U.S. federal income tax rate	21%	21%	21%
Unrecognized tax benefits and related interest	(1.10%)	(2.70%)	(0.70%)
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent	(2.10%)	0%	0%
State and local tax impact	(2.10%)	(1.20%)	1.70%
Other - net	0.10%	(1.00%)	0.50%
Effective Tax Rate	15.80%	16.10%	22.50%

INCOME TAXES (Schedule of Defer

INCOME TAXES (Schedule of Deferred Tax Balances) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Property, Plant and Equipment	$ 0	$ 0
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards	13	11
Postretirement benefit obligations, Deferred Tax Assets	95	92
Other accruals and reserves, Deferred Tax Assets	251	270
Inventory, Deferred Tax Assets	1	2
Other - net, deferred tax assets	12	16
Subtotal, deferred tax assets	(372)	(391)
Valuation allowances, deferred tax assets	(10)	(11)
Total, deferred tax assets	362	380
Property, Deferred Tax Liabilities	109	123
Tax loss and credit carryforwards, Deferred Tax Liabilities,	0	0
Postretirement benefit obligations, Deferred Tax Liabilities	0	0
Other accruals and reserves, Deferred Tax Liabilities	0	0
Inventory, deferred tax liabilities	0	0
Other - net, deferred tax liabilities	0	0
Total, deferred tax liabilities	$ 109	$ 123

INCOME TAXES (Summary of Operat

INCOME TAXES (Summary of Operating Loss Carryforwards) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred Tax Assets, Operating Loss Carryforwards	$ 8	$ 8
Deferred Tax Assets, Tax Credit Carryforwards	5	3
Operating Loss Carryforward and Tax Credit Carryforwards	13	11
Undistributed Earnings of Foreign Subsidiaries	0	0
Taxes Payable	299	301
Expiring Within Five Years [Member]
Deferred Tax Assets, Operating Loss Carryforwards	4	5
Deferred Tax Assets, Tax Credit Carryforwards	2	2
Expiring After Five Years or Having Indefinite Expiration [Member] [Member]
Deferred Tax Assets, Operating Loss Carryforwards	4	3
Deferred Tax Assets, Tax Credit Carryforwards	$ 3	$ 1

INCOME TAXES (Uncertain Tax Pos

INCOME TAXES (Uncertain Tax Position) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Total Gross Unrecognized Tax Benefits [Roll Forward]
Gross unrecognized tax benefits, beginning balance	$ 8	$ 8	$ 8
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	0	0	0
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	0	0
Gross unrecognized tax benefits, ending balance	8	8	8
Total unrecognized tax benefits that, if recognized, would impact the effective tax rate	8	8	8
Total amount of interest and penalties (benefit) recognized in "Provision for income taxes"	(4)	(12)	(10)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 11	$ 11	$ 10

INCOME TAXES (Tax Years Subject

INCOME TAXES (Tax Years Subject to Examination by Major Tax Jurisdiction) (Details)	12 Months Ended
	Dec. 31, 2024
State and Local Income Tax [Member]
Earliest open year	2004
Federal Income Tax [Member]
Earliest open year	2007

INVENTORIES (Schedule of Invent

INVENTORIES (Schedule of Inventories) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Finished goods	$ 238	$ 189
Work in process	44	30
Raw materials	72	60
Supplies	94	87
Total	448	366
Adjustment of inventories to a LIFO basis	(152)	(139)
Total inventories	$ 296	$ 227
Percentage of LIFO Inventory	68%	60%

PROPERTY (Schedule of Property)

PROPERTY (Schedule of Property) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property	$ 5,732	$ 5,406
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property	$ 68	68
Land and Land Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	0 years
Land and Land Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	25 years
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property	$ 259	259
Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5 years
Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	50 years
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property	$ 4,875	4,799
Machinery and equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Machinery and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	20 years
Other property [Member]
Property, Plant and Equipment [Line Items]
Property	$ 112	111
Other property [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Other property [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	30 years
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property	$ 418	$ 169

PROPERTY (Schedule of Other Ite

PROPERTY (Schedule of Other Items Related to Property) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 117	$ 146	$ 165
Capitalized interest	$ 13	$ 8	$ 5

INVESTMENTS IN RELATED COMPAN_3

INVESTMENTS IN RELATED COMPANIES (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Investments in related companies	$ 237	$ 237
Dow International Holdings Company [Member]
Schedule of Investments [Line Items]
Ownership Interest Percentage, Related Company	5%	5%
Equity Securities without Readily Determinable Fair Value, Amount	$ 232	$ 232
Dow Quimica Mexicana S.A. de C.V. [Member]
Schedule of Investments [Line Items]
Ownership Interest Percentage, Related Company	14%	14%
Equity Securities without Readily Determinable Fair Value, Amount	$ 5	$ 5

INTANGIBLE ASSETS (Schedule of

INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 101	$ 100
Finite-Lived Intangible Assets, Accumulated Amortization	(95)	(93)
Finite-Lived Intangible Assets, Net	6	7
Licenses and Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	33	33
Finite-Lived Intangible Assets, Accumulated Amortization	(33)	(33)
Finite-Lived Intangible Assets, Net	0	0
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	68	67
Finite-Lived Intangible Assets, Accumulated Amortization	(62)	(60)
Finite-Lived Intangible Assets, Net	$ 6	$ 7

INTANGIBLE ASSETS (Schedule o_2

INTANGIBLE ASSETS (Schedule of Amortization Expense of Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Software	$ 2	$ 3	$ 5

INTANGIBLE ASSETS (Schedule o_3

INTANGIBLE ASSETS (Schedule of Future Amortization Expense of Intangible Assets) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2025	$ 2
2026	2
2027	1
2028	1
2029	$ 1

NOTES PAYABLE AND LONG-TERM D_3

NOTES PAYABLE AND LONG-TERM DEBT (Schedule of Notes Payable) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
Notes payable to related companies	$ 19	$ 68
Notes Payable to Bank	0	1
Notes Payable	$ 19	$ 69
Year-end average interest rates	3.15%	1.06%

NOTES PAYABLE AND LONG-TERM D_4

NOTES PAYABLE AND LONG-TERM DEBT (Schedule of Long-Term Debt) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term Debt and Lease Obligation	$ 143	$ 259
Unamortized debt discount and issuance costs	(2)	(3)
Long-term debt due within one year	(126)	(1)
Repayments of Long-term Debt		$ 129
Letters of Credit Outstanding, Amount	$ 5
Final Maturity 2025 (a) [Member]
Debt Instrument [Line Items]
Average Interest Rate in Period	6.79%	6.79%
Long-term Debt and Lease Obligation	$ 12	$ 12
Final Maturity 2025 (b) [Member]
Debt Instrument [Line Items]
Average Interest Rate in Period	7.50%	7.50%
Long-term Debt and Lease Obligation	$ 113	$ 113
Final Maturity 2096 [Member]
Debt Instrument [Line Items]
Average Interest Rate in Period	7.75%	7.75%
Long-term Debt and Lease Obligation	$ 135	$ 135
Finance Lease Obligations
Debt Instrument [Line Items]
Long-term Debt and Lease Obligation	$ 11	$ 3

NOTES PAYABLE AND LONG-TERM D_5

NOTES PAYABLE AND LONG-TERM DEBT (Schedule of Annual Installments) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Long-Term Debt, Fiscal Year Maturity [Abstract]
2020	$ 126
2021	1
2022	1
2023	1
2024	$ 1

COMMITMENTS AND CONTINGENCIES_3

COMMITMENTS AND CONTINGENCIES (Environmental Matters) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at Jan 1	$ 194	$ 183
Accrual adjustment	37	49
Accrual for Environmental Loss Contingencies, Payments	(47)	(37)
Foreign currency impact	0	(1)
Balance at Dec 31	184	194	$ 183
Environmental remediation expense	37	44	72
Capital expenditures for environmental protection	$ 16	$ 47	$ 38
Environmental Remediation Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of sales	Cost of sales	Cost of sales
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other noncurrent obligations	Other noncurrent obligations
Accrual For Environmental Loss Contingencies Superfund Sites [Member]
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at Jan 1	$ 37
Balance at Dec 31	$ 35	$ 37

COMMITMENTS AND CONTINGENCIES_4

COMMITMENTS AND CONTINGENCIES (Asbestos Related Matters) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Liability for Asbestos Claims and Defense Costs Gross	$ 791	$ 867
Percentage of Recorded Asbests Liability Related to Pending Claims	23%	25%
Percentage of Recorded Asbestos Liability Related to Future Claims	77%	75%

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE LOSS (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (1,343)	$ (1,402)
Net other comprehensive income	(1)	59	$ 149
Ending balance	(1,344)	(1,343)	(1,402)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(53)	(54)	(53)
Other comprehensive income (loss) before reclassifications	1	1	0
Net other comprehensive income	1	1	(1)
Ending balance	(52)	(53)	(54)
Pension and Other Postretirement Benefits
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1,290)	(1,348)	(1,498)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(57)	(116)	96
Other Comprehensive Income (Loss) before Reclassifications, Tax	13	25	(22)
Other comprehensive income (loss) before reclassifications	(44)	(91)	74
Amounts reclassified from AOCL	42	149	76
Reclassification from AOCI, Current Period, Tax	(13)	(45)	(22)
Net other comprehensive income	(2)	58	150
Ending balance	(1,292)	(1,290)	(1,348)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Amounts reclassified from AOCL	0	0	(1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension and Other Postretirement Benefits
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	$ 55	$ 194	$ 98

PENSION PLANS AND OTHER POSTR_3

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Pension Plans) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	$ 230
Defined Benefit Plan, Plan Assets, Payment for Settlement	210
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	$ (149)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement and Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total sundry income (expense) - net
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement		$ 0	$ 211
Defined Benefit Plan, Plan Assets, Payment for Settlement		0	211
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		0	(149)	$ 0
Defined Benefit Plan, Plan Assets, Contributions by Employer		2	$ 2
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		$ 3
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	5.25%	5.67%	5.25%	5.60%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate		5.25%	5.72%	2.94%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate	4.50%	3.47%	4.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate		4.50%	4.50%	4.50%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	4.25%		4.25%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase		4.25%	4.25%	4.25%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets		6.40%	6.80%	6.80%

PENSION PLANS AND OTHER POSTR_4

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Other Postretirement Benefits) (Details) - Other Postretirement Benefits Plan [Member]	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	5.64%	5.20%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	5.20%	5.56%	2.84%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	7%	6.50%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed to Calculate Net Periodic Benefit Cost, Next Fiscal Year	6.50%	6.57%	6.50%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5%	5%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate To Calculate Net Period Benefit Cost	5%	5%	5%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate To Calculate PBO, End of Year	2033	2033
Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate	2033	2033	2028

PENSION PLANS AND OTHER POSTR_5

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Change in Projected Benefit Obligation, Plan Assets and Funded Status) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease For Termination Benefits, Curtailment, And Settlements	$ (230)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance		$ 2,400
Defined Benefit Plan, Plan Assets, Payment for Settlement	(210)
Fair value of plan assets at end of year	2,400	2,200	$ 2,400
Pension Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance		2,633	2,860
Defined Benefit Plan, Service Cost		0	32	$ 37
Defined Benefit Plan, Interest Cost		129	147	91
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)		(85)	55
Defined Benefit Plan, Benefit Obligation, Benefits Paid		(209)	(246)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease For Termination Benefits, Curtailment, And Settlements		0	(211)
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change		0	(4)
Defined Benefit Plan, Benefit Obligation, Ending Balance	2,633	2,468	2,633	2,860
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance		2,370	2,679
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)		10	146
Defined Benefit Plan, Plan Assets, Contributions by Employer		2	2
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan		0	(5)
Defined Benefit Plan, Plan Assets, Benefits Paid		(209)	(246)
Defined Benefit Plan, Plan Assets, Payment for Settlement		0	(211)
Defined Benefit Plan, Plan Assets, Period Increase (Decrease)		(4)	(5)
Fair value of plan assets at end of year	2,370	2,177	2,370	2,679
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(263)	(291)	(263)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Assets for Plan Benefits, Defined Benefit Plan	10	0	10
Liability, Defined Benefit Plan, Current	(2)	(1)	(2)
Liability, Defined Benefit Plan, Noncurrent	(271)	(290)	(271)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(263)	(291)	(263)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	1,752	1,756	1,752
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance		133	128
Defined Benefit Plan, Service Cost		0	0	1
Defined Benefit Plan, Interest Cost		7	7	3
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)		(14)	6
Defined Benefit Plan, Benefit Obligation, Benefits Paid		(7)	(8)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease For Termination Benefits, Curtailment, And Settlements		0	0
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change		1	0
Defined Benefit Plan, Benefit Obligation, Ending Balance	133	120	133	128
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance		0	0
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)		0	0
Defined Benefit Plan, Plan Assets, Contributions by Employer		0	0
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan		0	0
Defined Benefit Plan, Plan Assets, Benefits Paid		0	0
Defined Benefit Plan, Plan Assets, Payment for Settlement		0	0
Defined Benefit Plan, Plan Assets, Period Increase (Decrease)		0	0
Fair value of plan assets at end of year	0	0	0	$ 0
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(133)	(120)	(133)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Assets for Plan Benefits, Defined Benefit Plan	0	0	0
Liability, Defined Benefit Plan, Current	(12)	(11)	(12)
Liability, Defined Benefit Plan, Noncurrent	(121)	(109)	(121)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(133)	(120)	(133)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	$ (102)	$ (104)	$ (102)

PENSION PLANS AND OTHER POSTR_6

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Accumulated and Projected Benefit Obligations in Excess of Plan Assets) (Details) - Pension Plan [Member] - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation	$ 2,500	$ 2,600
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation	2,468	2,593
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets	2,177	2,320
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation	2,468	2,593
Defied Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Fair Value of Plan Assets	$ 2,177	$ 2,320

PENSION PLANS AND OTHER POSTR_7

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	$ 149
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		$ 22	$ 144	$ (34)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost		0	32	37
Defined Benefit Plan, Interest Cost		129	147	91
Defined Benefit Plan, Expected Return (Loss) on Plan Assets		(169)	(204)	(226)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		0	0	(1)
Defined Benefit Plan, Amortization of Gain (Loss)		67	60	108
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		0	149	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		27	184	9
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax		71	109	(47)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax		0	0	1
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax		(67)	(60)	(108)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax		0	(149)	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax, Total		4	(100)	(154)
Total recognized in net periodic benefit cost and other comprehensive loss or income		31	84	(145)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost		0	0	1
Defined Benefit Plan, Interest Cost		7	7	3
Defined Benefit Plan, Expected Return (Loss) on Plan Assets		0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		0	0	0
Defined Benefit Plan, Amortization of Gain (Loss)		(12)	(15)	(9)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		(5)	(8)	(5)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax		(14)	7	(49)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax		0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax		12	15	9
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax		0	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax, Total		(2)	22	(40)
Total recognized in net periodic benefit cost and other comprehensive loss or income		$ (7)	$ 14	$ (45)

PENSION AND OTHER POSTRETIREMEN

PENSION AND OTHER POSTRETIREMENT BENEFITS (Estimated Future Benefit Payments) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	$ 290
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	209
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	205
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	202
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	197
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	914
Total estimated future benefit payments	2,017
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	11
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	11
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	11
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	11
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	11
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	48
Total estimated future benefit payments	$ 103

PENSION PLANS AND OTHER POSTR_8

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Target Allocation for Plan Investment Strategy and Risk Management for Plan Assets) (Details) - Pension Plan [Member]	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	23%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	45%
Alternative Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	27%
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	5%

PENSION PLANS AND OTHER POSTR_9

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Basis of Fair Value Measurements) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 2,200	$ 2,400
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2,177	2,370	$ 2,679
Defined Benefit Plan, Fair Value of Plan Assets Subtotal	1,431	1,709
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets Subtotal	523	666
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets Subtotal	907	1,042
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	1	2
Defined Benefit Plan, Fair Value of Plan Assets Subtotal	1	1
Cash and Cash Equivalents [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	178	203
Cash and Cash Equivalents [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	157	188
Cash and Cash Equivalents [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	21	15
Cash and Cash Equivalents [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
U.S. Equity [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	153	239
U.S. Equity [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	153	238
U.S. Equity [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	1
U.S. Equity [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Non-U.S. Equity - Developed Countries [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	225	250
Non-U.S. Equity - Developed Countries [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	213	238
Non-U.S. Equity - Developed Countries [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	11	11
Non-U.S. Equity - Developed Countries [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	1	1
Equity Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	378	489
Equity Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	366	476
Equity Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	11	12
Equity Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	1	0
US Treasury and Government [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	660	720
US Treasury and Government [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
US Treasury and Government [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	660	720
US Treasury and Government [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Corporate Debt Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	216	265
Corporate Debt Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	1
Corporate Debt Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	216	264
Corporate Debt Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Asset-backed Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	34	37
Asset-backed Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Asset-backed Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	34	37
Asset-backed Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Fixed Income Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	910	1,022
Fixed Income Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	1
Fixed Income Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	910	1,021
Fixed Income Securities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Derivative Financial Instruments, Assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	12	7
Derivative Financial Instruments, Assets [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Derivative Financial Instruments, Assets [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	12	7
Derivative Financial Instruments, Assets [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Derivative Financial Instruments, Liabilities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	47	13
Derivative Financial Instruments, Liabilities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Derivative Financial Instruments, Liabilities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	47	13
Derivative Financial Instruments, Liabilities [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount	0	0
Alternative Investments [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(35)	(6)
Alternative Investments [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Alternative Investments [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(35)	(6)
Alternative Investments [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0	$ 2
Other [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	1
Other [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	1
Other [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other [Member] | Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Hedge Funds [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets	140	125
Private Equity Funds [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets	460	344
Real Estate [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets	155	199
Plan Assets, Retirement Plan, Total investments measured at NAV | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	755	668
Pension Trust Receivables | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	7
Pension Trust Payables [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ (10)	$ (14)

PENSION PLANS AND OTHER POST_10

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Fair Value Measurement of Level 3 Pension Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 2,200	$ 2,400
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2,177	2,370	$ 2,679
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	1	2
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	0	(1)
Pension Plan [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	910	1,022
Pension Plan [Member] | Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	378	489
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	1	0
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	0	1
Pension Plan [Member] | Alternative Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(35)	(6)
Pension Plan [Member] | Alternative Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0	$ 2
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	$ 0	$ (2)

PENSION PLANS AND OTHER POST_11

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Defined Contribution Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost	$ 21	$ 12	$ 12
Automatic Non-Elective Contribution
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4%

LEASES (Details)

LEASES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Lease, Cost	$ 18	$ 25	$ 25
Short-term lease cost	57	41	31
Variable lease cost	19	25	19
Amortization of right-of-use assets - finance	2	3	3
Total lease cost	96	94	78
Operating cash flows for operating leases	18	24	25
Financing cash flows for finance leases	2	3	3
Right-of-use assets obtained in exchange for lease obligations:	2	12	2
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	11	2	$ 1
Operating lease assets	61	85
Total lease assets	73	87
Operating lease liabilities - current	12	17
Operating lease liabilities - noncurrent	49	68
Total lease liabilities	$ 72	$ 88
Operating Lease, Weighted Average Remaining Lease Term	6 years 8 months 12 days	6 years 8 months 12 days
Finance Lease, Weighted Average Remaining Lease Term	7 years 10 months 24 days	3 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	3.21%	3.42%
Finance Lease, Weighted Average Discount Rate, Percent	5.49%	4.38%
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 14
Finance Lease, Liability, Payments, Due Next Twelve Months	2
Lessee, Operating Lease, Liability, Payments, Due Year Two	13
Finance Lease, Liability, Payments, Due Year Two	2
Lessee, Operating Lease, Liability, Payments, Due Year Three	12
Finance Lease, Liability, Payments, Due Year Three	2
Lessee, Operating Lease, Liability, Payments, Due Year Four	10
Finance Lease, Liability, Payments, Due Year Four	2
Lessee, Operating Lease, Liability, Payments, Due Year Five	4
Finance Lease, Liability, Payments, Due Year Five	2
Lessee, Operating Lease, Liability, Payments, Due after Year Five	16
Finance Lease, Liability, Payments, Due after Year Five	5
Lessee, Operating Lease, Liability, Payments, Due	69
Finance Lease, Liability, Payment, Due	15
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	8
Finance Lease, Liability, Undiscounted Excess Amount	4
Operating lease, liability	61
Finance Lease, Liability	11
Lessee, Additional Leases Not yet Commenced, Assumptions and Judgment, Amount	$ 0
Lessee, Operating And Finance Leases	LEASES Operating lease ROU assets are included in "Operating lease right-of-use assets" and finance lease ROU assets are included in "Net property" in the consolidated balance sheets. With respect to lease liabilities, operating lease liabilities are included in "Operating lease liabilities - current" and "Operating lease liabilities - noncurrent," and finance lease liabilities are included in "Long-term debt due within one year" and "Long-Term Debt" in the consolidated balance sheets. The Corporation routinely leases product and utility production facilities, sales and administrative offices, warehouses and tanks for product storage, motor vehicles, railcars, office machines and equipment. Some leases contain renewal provisions, purchase options and escalation clauses. The terms for these leased assets vary depending on the lease agreement. These leased assets have remaining lease terms of up to 21 years. The Corporation's lease agreements do not contain any material residual value guarantees or restrictive covenants. The components of lease cost for operating and finance leases for the years ended December 31, 2024, 2023 and 2022 were as follows: Lease Cost 2024 2023 2022 In millions Operating lease cost $ 18 $ 25 $ 25 Short-term lease cost 57 41 31 Variable lease cost 19 25 19 Amortization of right-of-use assets - finance 2 3 3 Total lease cost $ 96 $ 94 $ 78 The following table provides supplemental cash flow and other information related to leases: Other Lease Information 2024 2023 2022 In millions Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 18 $ 24 $ 25 Financing cash flows for finance leases $ 2 $ 3 $ 3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 2 $ 12 $ 2 Finance leases $ 11 $ 2 $ 1 The following table summarizes the lease-related assets and liabilities recorded in the consolidated balance sheets at December 31, 2024 and 2023: Lease Position Balance Sheet Classification Dec 31, 2024 Dec 31, 2023 In millions Assets Operating lease assets Operating lease right-of-use assets $ 61 $ 85 Finance lease assets Property 25 14 Finance lease amortization Accumulated depreciation (13) (12) Total lease assets $ 73 $ 87 Liabilities Current Operating Operating lease liabilities - current $ 12 $ 17 Finance Long-term debt due within one year 1 1 Noncurrent Operating Operating lease liabilities - noncurrent 49 68 Finance Long-Term Debt 10 2 Total lease liabilities $ 72 $ 88 The weighted-average remaining lease term and discount rate for leases recorded in the consolidated balance sheets at December 31, 2024 and 2023 are provided below: Lease Term and Discount Rate Dec 31, 2024 Dec 31, 2023 Weighted-average remaining lease term Operating leases 6.7 years 6.7 years Finance leases 7.9 years 3.8 years Weighted-average discount rate Operating leases 3.21 % 3.42 % Finance leases 5.49 % 4.38 % The following table provides the maturities of lease liabilities at December 31, 2024: Maturities of Lease Liabilities Dec 31, 2024 In millions Operating Leases Finance Leases 2025 $ 14 $ 2 2026 13 2 2027 12 2 2028 10 2 2029 4 2 2030 and thereafter 16 5 Total future undiscounted lease payments $ 69 $ 15 Less: Imputed interest 8 4 Total present value of lease liabilities $ 61 $ 11 At December 31, 2024, the Corporation had no additional leases for assets that have not yet commenced.
Property, Plant and Equipment
Finance Lease, Right-of-Use Asset, before Accumulated Amortization	$ 25	$ 14
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Finance Lease, Right-of-Use Asset, Accumulated Amortization	13	12
Long-Term Debt Due Within One Year
Finance Lease, Liability	1	1
Long-term Debt and Lease Obligation
Finance Lease, Liability	$ 10	$ 2
Maximum [Member]
Lessee, Operating and Finance Leases, Remaining Lease Term	21 years

FAIR VALUE MEASUREMENTS (Basis

FAIR VALUE MEASUREMENTS (Basis of Fair Value Measurements on a Recurring Basis) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt		$ (269)	$ (260)
Cash and Cash Equivalents, Fair Value Disclosure		11	10
Long-term Debt, Fair Value		(295)	(307)
Restructuring Charges	$ 14	0	14	$ 0
Asset write-downs and write-offs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restructuring Charges	$ 2		2
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents, at Carrying Value		11	10
Financial Instruments Gross Unrealized Gains		0	0
Financial Instruments Gross Unrealized Loss		0	0
Manufacturing Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure			0
Long-term Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Instruments Gross Unrealized Gains		0	0
Financial Instruments Gross Unrealized Loss		$ (26)	$ (47)

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	$ 389		$ 389
Adjustments to Additional Paid in Capital, Other			893
Other Tax Expense (Benefit)			$ 251
Equity Ownership, Excluding Consolidated Entity and Equity Method Investee, Percentage	0.50%		0.50%
Gain on Sale of Investments		$ 2	$ 206	$ 0
Short-term lease cost		57	41	31
Increase (Decrease) in Income Taxes Receivable		280
Lending facility to Parent, Maximum lending per agreement		2,000
Financing Receivable, Revolving	$ 799	593	799
Line of Credit Facility, Remaining Borrowing Capacity	948	1,943	948
Payments of Dividends		$ 228	512	1,063
The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Service Fee with Parent		10%
Short-term lease cost		$ 16
Line of Credit Facility, Maximum Borrowing Capacity	1,000	2,000	1,000
Payments of Dividends		228	512	1,063
The Dow Chemical Company [Member] | Estimated Federal Tax Liability, Related Party [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction		90	113	155
Noncurrent receivables from related companies | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Loans and Leases Receivable, Related Parties	1,543	1,642	1,543
Sundry Income (Expense), Net [Member]
Related Party Transaction [Line Items]
Gain on Sale of Investments		2	206
Sundry Income (Expense), Net [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Income (Loss) from Equity Method Investments	$ 10
Commodity and Raw Material Purchases | Cost of Sales [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party		996	1,078	1,909
Net Commission Expense [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party		20	19	19
Net Commission Expense [Member] | Sundry Income (Expense), Net [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party		20	19	19
General and Administrative Expense [Member] | Sundry Income (Expense), Net [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party		69	72	65
Activity Based Costs [Member] | Cost of Sales [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party		599	$ 158	$ 89
Insurance Settlement | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party		$ 22

BUSINESS AND GEOGRAPHIC AREAS_3

BUSINESS AND GEOGRAPHIC AREAS (Schedule of Revenue by Geographic Area and Other Details) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	$ 120	$ 147	$ 191
Long-lived assets	1,121	894	1,182
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	119	117	182
Long-lived assets	1,093	862	1,149
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	1	30	3
Long-lived assets	18	21	22
Rest of World
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	0	0	6
Long-lived assets	$ 10	$ 11	$ 11
Malaysia
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of Total Sales Related to a Specific Country in a Geographic Region	1%	20%	1%