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Litigations - Contingencies assets (Details) - ICMS included in PIS and COFINS tax base R$ in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2021 USD ($) case	Jun. 30, 2021 BRL (R$) case	Dec. 31, 2020 USD ($)	Dec. 31, 2020 BRL (R$)
Contingent assets
Number of judicial proceedings	2	2
Number of proceedings with definitive favorable decision	1	1
Contingent asset recognized	$ 162	R$ 808	$ 63	R$ 313
Addition gain	$ 29	R$ 146

X

- Definition

The amount of contingent assets recognized.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- References

No definition available.

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X

- Definition

Cash received for the settlement of litigation during the current period.

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No definition available.

+ Details

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Namespace Prefix:	vale_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The number of favorable judicial decision reached during the reported period.

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No definition available.

+ Details

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Namespace Prefix:	vale_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of judicial proceedings.

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No definition available.

+ Details

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Namespace Prefix:	vale_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

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