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Note 4 - Inventories | 6 Months Ended
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Jun. 30, 2026
Notes to Financial Statements |
Inventory Disclosure [Text Block] | 4. INVENTORIES ​ We state our inventories at the lower of cost or market, with cost determined using primarily average cost and last-in first-out (“LIFO”) methods for different components of inventory. Inventories consisted of the following (dollars in millions): ​
|  | June 30, |  |  | December 31, |
|  | 2026 |  |  | 2025 |
Raw materials and supplies |  | $ | 215 |  |  | $ | 163 |
Work in progress |  |  | 40 |  |  |  | 39 |
Finished goods |  |  | 728 |  |  |  | 658 |
Total |  |  | 983 |  |  |  | 860 |
LIFO reserves |  |  | (48 | ) |  |  | (42 | )
Net inventories |  | $ | 935 |  |  | $ | 818 |
​ As of June 30, 2026 and December 31, 2025, approximately 8% and 9% of our inventories were recorded using the LIFO cost method, respectively.​

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/330/tableOfContent + Details
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