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GOODWILL AND INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | 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, 2022(1) | $ | 1,275.6 |  |  | $ | 145.0 |  |  | $ | — |  |  | $ | 1,420.6 |
Foreign currency translation adjustment | 0.2 |  |  | 0.1 |  |  | — |  |  | 0.3 |
Balance at December 31, 2022(1) | 1,275.8 |  |  | 145.1 |  |  | — |  |  | 1,420.9 |
Goodwill acquired during the year | — |  |  | — |  |  | 2.7 |  |  | 2.7 |
Foreign currency translation adjustment | 0.3 |  |  | 0.1 |  |  | — |  |  | 0.4 |
Balance at December 31, 2023(1) | $ | 1,276.1 |  |  | $ | 145.2 |  |  | $ | 2.7 |  |  | $ | 1,424.0 |
(1) Includes cumulative goodwill impairment of $557.6 million and $142.2 million in Chlor Alkali Products and Vinyls and Epoxy, respectively.
Schedule of Finite-Lived Intangible Assets | Intangible assets consisted of the following:
|  |  | December 31,
|  |  | 2023 |  | 2022
| Useful Lives |  | Gross Amount |  | Accumulated Amortization |  | Net |  | Gross Amount |  | Accumulated Amortization |  | Net
Intangible Assets |  |  | ($ in millions)
Customers, customer contracts and relationships | 10-15 Years |  | $ | 671.7 |  |  | $ | (437.5) |  |  | $ | 234.2 |  |  | $ | 669.1 |  |  | $ | (401.2) |  |  | $ | 267.9 |
Trade names | 7 Years |  | 3.6 |  |  | (0.2) |  |  | 3.4 |  |  | — |  |  | — |  |  | — |
Acquired technology | 4-7 Years |  | 94.4 |  |  | (90.4) |  |  | 4.0 |  |  | 93.1 |  |  | (88.3) |  |  | 4.8 |
Other | 10 Years |  | 4.9 |  |  | (0.7) |  |  | 4.2 |  |  | 1.8 |  |  | (0.7) |  |  | 1.1 |
Total intangible assets |  |  | $ | 774.6 |  |  | $ | (528.8) |  |  | $ | 245.8 |  |  | $ | 764.0 |  |  | $ | (490.2) |  |  | $ | 273.8 |

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