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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets | Intangible assets consisted of the following at December 31:
|  | 2020 |  | 2019 |  | Weighted Average Life
|  | Cost |  | Accumulated Amortization |  | Net |  | Cost |  | Accumulated Amortization |  | Net |
Customer relationships |  | $ | 845 |  |  | $ | (401) |  |  | $ | 444 |  |  | $ | 832 |  |  | $ | (309) |  |  | $ | 523 |  |  | 11
Other intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Licenses and intellectual property |  | 178 |  |  | (94) |  |  | 84 |  |  | 172 |  |  | (79) |  |  | 93 |  |  | 13
Trademarks |  | 125 |  |  | (50) |  |  | 75 |  |  | 120 |  |  | (37) |  |  | 83 |  |  | 13
Other |  | 35 |  |  | (26) |  |  | 9 |  |  | 35 |  |  | (24) |  |  | 11 |  |  | 11
Total other intangible assets |  | $ | 338 |  |  | $ | (170) |  |  | $ | 168 |  |  | $ | 327 |  |  | $ | (140) |  |  | $ | 187 |  |  |
Schedule of Goodwill | The gross carrying amounts and changes in the carrying amount of goodwill for the years ended December 31, 2020 and 2019 are as follows:
|  | Vinyls Segment |  | Olefins Segment |  | Total
Balance at December 31, 2018 |  | $ | 972 |  |  | $ | 30 |  |  | $ | 1,002 |
Goodwill acquired during the year |  | 67 |  |  | — |  |  | 67 |
Effects of changes in foreign exchange rates |  | 5 |  |  | — |  |  | 5 |
Balance at December 31, 2019 |  | 1,044 |  |  | 30 |  |  | 1,074 |
Effects of changes in foreign exchange rates |  | 9 |  |  | — |  |  | 9 |
Balance at December 31, 2020 |  | $ | 1,053 |  |  | $ | 30 |  |  | $ | 1,083 |

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