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Investments Ownership Positions in Significant Unconsolidated (Details) | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Windfield Holdings |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership percentage | 49.00% | 49.00% | 49.00%
Nippon Aluminum Alkyls |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership percentage | 50.00% | 50.00% | 50.00%
Nippon Ketjen Company Limited |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership percentage | 50.00% | 50.00% | 50.00%
Eurecat S.A. |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership percentage | 50.00% | 50.00% | 50.00%
Fabrica Carioca de Catalisadores S.A. |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership percentage | 50.00% | 50.00% | 50.00%

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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