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Loans, borrowings, leases, cash and cash equivalents and short-term investments - Credit and financing lines (Details) - Revolving credit facilities $ in Millions | Dec. 31, 2020 USD ($)
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Loans and borrowings |
Available amount | $ 5,000
Maturing On June 2022 |
Loans and borrowings |
Available amount | 2,000
Maturing On December 2024 |
Loans and borrowings |
Available amount | $ 3,000

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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
Name: | ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References No definition available. + Details
Name: | vale_IfrsLineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix: | vale_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | ifrs-full_BorrowingsByNameAxis=vale_IfrsRevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_MaturityAxis=vale_MaturingOnJune2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_MaturityAxis=vale_MaturingOnDecember2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |