NOTE 9. GOODWILL AND INTANGIBLE ASSETS Changes in the carrying value of goodwill were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | Chlor Alkali Products and Vinyls | | Epoxy | | Winchester | | Total | | Goodwill | ($ in millions) | Balance at January 1, 2024(1) | $ | 1,276.1 | | | $ | 145.2 | | | $ | 2.7 | | | $ | 1,424.0 | | | Acquisition activity | — | | | — | | | (0.3) | | | (0.3) | | | Foreign currency translation adjustment | (0.2) | | | (0.1) | | | — | | | (0.3) | | Balance at June 30, 2024(1) | $ | 1,275.9 | | | $ | 145.1 | | | $ | 2.4 | | | $ | 1,423.4 | | | | | | | | | | Balance at January 1, 2025(1) | $ | 1,276.4 | | | $ | 144.8 | | | $ | 2.4 | | | $ | 1,423.6 | | | Acquisition activity | — | | | — | | | 2.0 | | | 2.0 | | | Foreign currency translation adjustment | (0.1) | | | — | | | — | | | (0.1) | | Balance at June 30, 2025(1) | $ | 1,276.3 | | | $ | 144.8 | | | $ | 4.4 | | | $ | 1,425.5 | |
(1)Includes cumulative goodwill impairment of $557.6 million and $142.2 million in Chlor Alkali Products and Vinyls and Epoxy, respectively. Intangible assets consisted of the following:
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2025 | | December 31, 2024 | | June 30, 2024 | | Gross Amount | | Accumulated Amortization | | Net | | Gross Amount | | Accumulated Amortization | | Net | | Gross Amount | | Accumulated Amortization | | Net | | Intangible Assets | ($ in millions) | | Customers, customer contracts and relationships | $ | 677.6 | | | $ | (493.7) | | | $ | 183.9 | | | $ | 666.7 | | | $ | (469.2) | | | $ | 197.5 | | | $ | 669.4 | | | $ | (453.5) | | | $ | 215.9 | | | Trade names | 3.7 | | | (1.0) | | | 2.7 | | | 3.5 | | | (0.6) | | | 2.9 | | | 3.6 | | | (0.4) | | | 3.2 | | | Acquired technology | 94.8 | | | (94.2) | | | 0.6 | | | 93.7 | | | (91.7) | | | 2.0 | | | 94.1 | | | (91.1) | | | 3.0 | | | Other | 7.2 | | | (0.7) | | | 6.5 | | | 4.9 | | | (0.7) | | | 4.2 | | | 4.9 | | | (0.7) | | | 4.2 | | | Total intangible assets | $ | 783.3 | | | $ | (589.6) | | | $ | 193.7 | | | $ | 768.8 | | | $ | (562.2) | | | $ | 206.6 | | | $ | 772.0 | | | $ | (545.7) | | | $ | 226.3 | |
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