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Subsequent Events (Details) - Event After Reporting Period [Member] - MXN ($) $ in Millions |  | 1 Months Ended
--- | --- | ---
Mar. 10, 2020 | Jan. 16, 2020
Disclosure of non-adjusting events after reporting period [line items] |  |
Preliminary tariff rate on products |  | 6.75%
Dividend paid | $ 1,990 |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition The amount of dividends recognised as distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 107 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_107&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Preliminary tariff rate applied on products. + References No definition available. + Details
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Namespace Prefix: | simecb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |