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Goodwill (Notes) | 3 Months Ended
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Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill The gross carrying amounts and changes in the carrying amount of goodwill for the three months ended March 31, 2021 were as follows:
|  | Vinyls Segment |  | Olefins Segment |  | Total |
Balances at December 31, 2020 |  | $ | 1,053 |  |  | $ | 30 |  |  | $ | 1,083 |  |
Effects of changes in foreign exchange rates |  | (1) |  |  | — |  |  | (1) |  |
Balances at March 31, 2021 |  | $ | 1,052 |  |  | $ | 30 |  |  | $ | 1,082 |  |

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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