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Document and Entity Information
 12 Months Ended
Dec. 31, 2021
shares
Document Information [Line Items]  
Document Type 20-F
Document Annual Report true
Document Registration Statement false
Document Period End Date Dec. 31, 2021
Entity File Number 001-15030
Entity Registrant Name VALE S.A.
Entity Address, Address Line One Praia de Botafogo 186
Entity Address, City or Town Rio de Janeiro
Entity Address, Postal Zip Code 22250
Entity Incorporation, State or Country Code D5
Entity Address, Country BR
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
ICFR Auditor Attestation Flag true
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Document Transition Report false
Document Shell Company Report false
Entity Central Index Key 0000917851
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
Amendment Flag false
Auditor Name PricewaterhouseCoopers Auditores Independentes Ltda
Auditor Firm ID 1351
Auditor Location Rio de Janeiro, RJ, Brazil
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Address Line One Praia de Botafogo 186
Entity Address, City or Town principal
Entity Address, Postal Zip Code 22250
City Area Code 21
Local Phone Number 3485-5000
Contact Personnel Name Gustavo Duarte Pimenta
Common share  
Document Information [Line Items]  
Title of 12(b) Security Common shares of Vale, no par value per share
No Trading Symbol Flag true
Security Exchange Name NYSE
Entity Common Stock, Shares Outstanding 4,839,616,924
6.250% Guaranteed Notes due 2026, issued by Vale Overseas  
Document Information [Line Items]  
Title of 12(b) Security 6.250% Guaranteed Notes due 2026, issued by Vale Overseas
Trading Symbol VALE/26
Security Exchange Name NYSE
3.750% Guaranteed Notes due 2030, issued by Vale Overseas  
Document Information [Line Items]  
Title of 12(b) Security 3.750% Guaranteed Notes due 2030, issued by Vale Overseas
Trading Symbol VALE/30
Security Exchange Name NYSE
8.250% Guaranteed Notes due 2034, issued by Vale Overseas  
Document Information [Line Items]  
Title of 12(b) Security 8.250% Guaranteed Notes due 2034, issued by Vale Overseas
Trading Symbol VALE/34
Security Exchange Name NYSE
6.875% Guaranteed Notes due 2036, issued by Vale Overseas  
Document Information [Line Items]  
Title of 12(b) Security 6.875% Guaranteed Notes due 2036, issued by Vale Overseas
Trading Symbol VALE/36
Security Exchange Name NYSE
6.875% Guaranteed Notes due 2039, issued by Vale Overseas  
Document Information [Line Items]  
Title of 12(b) Security 6.875% Guaranteed Notes due 2039, issued by Vale Overseas
Trading Symbol VALE39
Security Exchange Name NYSE
5.625% Notes due 2042, issued by Vale S.A.  
Document Information [Line Items]  
Title of 12(b) Security 5.625% Notes due 2042, issued by Vale S.A.
Trading Symbol VALE42
Security Exchange Name NYSE
Golden shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 12
ADR  
Document Information [Line Items]  
Title of 12(b) Security American Depositary Shares (evidenced by American Depositary Receipts),each representing one common share of Vale
Trading Symbol VALE
Security Exchange Name NYSE