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Investments (Details 2) - USD ($) $ / shares in Units, $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
Fair value | $ 7,794 |
Fair value | $ 1,370 | $ 2,942
Common Shares [Member] | Braskem S A [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Investments in associates number of shares | 212,427 | 212,427
Quoted stock exchange | $ 4.83 | $ 10.17
Fair value | $ 1,025 | $ 2,160
Class A Preference Shares [Member] | Braskem S A [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Investments in associates number of shares | 75,762 | 75,762
Quoted stock exchange | $ 4.55 | $ 10.33
Fair value | $ 345 | $ 782

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- Definition The fair value of investments in associates if there are quoted market prices for the investment. [Refer: Associates [member]; Investments in associates reported in separate financial statements] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2022-03-24 -Paragraph 21 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2022-en-r&anchor=para_21_b_iii&doctype=Standard -URIDate 2022-03-24 + Details
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