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ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS
 6 Months Ended
Jun. 30, 2025
Accrual for Environmental Loss Contingencies Disclosure [Abstract]  
Environmental Matters ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS
Certain Eastman manufacturing facilities generate hazardous and nonhazardous wastes, of which the treatment, storage, transportation, and disposal are regulated by various governmental agencies. In connection with the cleanup of various hazardous waste sites, the Company, along with many other entities, has been designated a potentially responsible party ("PRP") by the U.S. Environmental Protection Agency under the Comprehensive Environmental Response, Compensation and Liability Act, which potentially subjects PRPs to joint and several liability for certain cleanup costs. In addition, the Company will incur costs for environmental remediation and closure and post-closure under the federal Resource Conservation and Recovery Act. Reserves for environmental contingencies have been established in accordance with Eastman's policies described in Note 1, "Significant Accounting Policies", to the consolidated financial statements in Part II, Item 8 of the Company's 2024 Annual Report on Form 10-K. The resolution of uncertainties related to environmental matters may have a material adverse effect on the Company's consolidated financial statements and related disclosures in the period recognized. However, because of the availability of legal defenses, the Company's preliminary assessment of actions that may be required, and the extended period of time that the obligations are expected to be satisfied, management does not believe that the Company's liability for these environmental matters, individually or in the aggregate, will have a material adverse effect on the Company's future overall financial position, results of operations, or cash flows.
Environmental Remediation and Environmental Asset Retirement Obligations

The Company's net environmental reserve for environmental contingencies, including remediation costs and asset retirement obligations, is included as part of "Other noncurrent assets", "Payables and other current liabilities", and "Other long-term liabilities" on the Unaudited Consolidated Statements of Financial Position as follows:
(Dollars in millions)June 30, 2025December 31, 2024
Environmental contingencies, current$15 $15 
Environmental contingencies, long-term310 269 
Total$325 $284 

Environmental Remediation

Estimated future environmental expenditures for undiscounted remediation costs ranged from $293 million to $502 million and from $252 million to $495 million at June 30, 2025 and December 31, 2024, respectively. The best estimate or minimum estimated future environmental expenditures are considered to be probable and reasonably estimable.

Reserves for environmental remediation include liabilities expected to be paid within approximately 30 years. The amounts charged to pre-tax earnings for environmental remediation and related charges are recognized in "Cost of sales" and "Other (income) charges, net" in the Unaudited Consolidated Statements of Earnings, Comprehensive Income and Retained Earnings.

Changes in the reserves for environmental remediation liabilities during first six months 2025 and full year 2024 are summarized below:
(Dollars in millions)Environmental Remediation Liabilities
Balance at December 31, 2023
$252 
Changes in estimates recognized in earnings and other13 
Cash reductions(13)
Balance at December 31, 2024
252 
Changes in estimates recognized in earnings and other46 
Cash reductions(5)
Balance at June 30, 2025$293 

Environmental Asset Retirement Obligations

An asset retirement obligation is an obligation for the retirement of a tangible long-lived asset that is incurred upon the acquisition, construction, development, or normal operation of that long-lived asset. Environmental asset retirement obligations primarily consist of closure and post-closure costs. For sites that have environmental asset retirement obligations, the best estimate recognized to date for these environmental asset retirement obligation costs was $32 million at both June 30, 2025 and December 31, 2024.

Non-Environmental Asset Retirement Obligations

The Company has contractual asset retirement obligations not associated with environmental liabilities. Eastman's non-environmental asset retirement obligations are primarily associated with the future closure of leased manufacturing assets in Pace, Florida and Oulu, Finland. These non-environmental asset retirement obligations were $55 million and $53 million at June 30, 2025 and December 31, 2024, respectively, and are included in "Other long-term liabilities" on the Unaudited Consolidated Statements of Financial Position.