XML 192 R165.htm IDEA: XBRL DOCUMENT v3.21.1

Provisions - Asset retirement obligations - Changes in long-term interest rates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Brazil
Provisions.
Long-term interest rates (per annum) (as a percent)	3.54%	3.36%
Canada
Provisions.
Long-term interest rates (per annum) (as a percent)	0.00%	0.40%
Mozambique
Provisions.
Long-term interest rates (per annum) (as a percent)	5.67%	5.20%
Minimum | Other regions
Provisions.
Long-term interest rates (per annum) (as a percent)	0.00%	0.60%
Maximum | Other regions
Provisions.
Long-term interest rates (per annum) (as a percent)	4.73%	4.78%
Asset retirement obligations | Base metals
Provisions.
Letters of credit and surety bonds issued in relation to asset retirement obligation	$ 651

X

- 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_DisclosureOfOtherProvisionsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The long-term interest rates used to discount the obligations to present value and to update the provision.

+ References

No definition available.

+ Details

Name:	vale_AssetRetirementObligationDiscountRateApplied
Namespace Prefix:	vale_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of letters of credit and surety bonds issued in relation to asset retirement obligation.

+ References

No definition available.

+ Details

Name:	vale_LettersOfCreditAndSuretyBondsIssuedInRelationToAssetRetirementObligation
Namespace Prefix:	vale_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_BR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_CA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_MZ
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=vale_OtherRegionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfProvisionsAxis=ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SegmentsAxis=vale_BaseMetalsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: