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Employee benefits - Assets of pension plans (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Plans in Brazil | Portfolio of Vale's stock
Assets of pension plans
Plan assets	$ 50	$ 20
Plans in Brazil | Brazilian Federal Government securities
Assets of pension plans
Plan assets	3,682	3,612
Foreign plan | Canadian Government securities
Assets of pension plans
Plan assets	$ 682	$ 688

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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No definition available.

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- Definition

The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2021-01-01
-Paragraph 57
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